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82-619: The G series has a lithium-ion battery , full manual exposure control, an articulated LCD screen (G7, G9, G10, G15, and G16 have a fixed screen), Raw image format capture (all models except the G7), a lens with a wider maximum aperture than standard PowerShot models, remote capture (except the G11), and faster image processing. The range also includes a hot shoe (except the G7 X and G9 X ) for an external flash , including Canon's EX range . New models in

164-588: A DSLR-like form factor much similar to the G5 X. It also is the first PowerShot (with the exception of waterproof D-series) to have weather sealing. G3 X is the only superzoom model in the G-series. It offers a 25x zoom (24–600 mm equivalent) with aperture f/2.8-5.6. It offers an alternative to the Canon Powershot SX-series cameras with much better image quality. Because of the lens, the camera

246-498: A G12 when covering the Bahraini uprising . Lithium-ion battery A lithium-ion or Li-ion battery is a type of rechargeable battery that uses the reversible intercalation of Li ions into electronically conducting solids to store energy. In comparison with other commercial rechargeable batteries , Li-ion batteries are characterized by higher specific energy , higher energy density , higher energy efficiency ,

328-413: A balancing circuit until the battery is balanced. Balancing typically occurs whenever one or more cells reach their top-of-charge voltage before the other(s), as it is generally inaccurate to do so at other stages of the charge cycle. This is most commonly done by passive balancing, which dissipates excess charge as heat via resistors connected momentarily across the cells to be balanced. Active balancing

410-420: A conventional lithium-ion cell is graphite made from carbon . The positive electrode is typically a metal oxide or phosphate. The electrolyte is a lithium salt in an organic solvent . The negative electrode (which is the anode when the cell is discharging) and the positive electrode (which is the cathode when discharging) are prevented from shorting by a separator. The electrodes are connected to

492-524: A fast zoom lens, for better shallow depth of field throughout the maximum-aperture range, and sharp shots even in low light, a DIGIC 6 processor with capability to take 1080/60p MP4 video shoots. The camera lacks a built-in viewfinder but supports an external electronic one. It has no microphone input or headphone jack. In October 2017, Canon introduced the third model of the G1 X-series: Canon PowerShot G1 X Mark III. It replaced

574-417: A gelled material, requiring fewer binding agents. This in turn shortens the manufacturing cycle. One potential application is in battery-powered airplanes. Another new development of lithium-ion batteries are flow batteries with redox-targeted solids, that use no binders or electron-conducting additives, and allow for completely independent scaling of energy and power. Generally, the negative electrode of

656-400: A higher discharge rate. NMC and its derivatives are widely used in the electrification of transport , one of the main technologies (combined with renewable energy ) for reducing greenhouse gas emissions from vehicles . M. Stanley Whittingham conceived intercalation electrodes in the 1970s and created the first rechargeable lithium-ion battery, based on a titanium disulfide cathode and

738-404: A liquid solvent (such as propylene carbonate or diethyl carbonate ) is added. The electrolyte salt is almost always lithium hexafluorophosphate ( LiPF 6 ), which combines good ionic conductivity with chemical and electrochemical stability. The hexafluorophosphate anion is essential for passivating the aluminium current collector used for the positive electrode. A titanium tab

820-506: A lithium-aluminium anode, although it suffered from safety problems and was never commercialized. John Goodenough expanded on this work in 1980 by using lithium cobalt oxide as a cathode. The first prototype of the modern Li-ion battery, which uses a carbonaceous anode rather than lithium metal, was developed by Akira Yoshino in 1985 and commercialized by a Sony and Asahi Kasei team led by Yoshio Nishi in 1991. M. Stanley Whittingham , John Goodenough , and Akira Yoshino were awarded

902-524: A lithium-ion cell can change dramatically. Current effort has been exploring the use of novel architectures using nanotechnology to improve performance. Areas of interest include nano-scale electrode materials and alternative electrode structures. The reactants in the electrochemical reactions in a lithium-ion cell are the materials of the electrodes, both of which are compounds containing lithium atoms. Although many thousands of different materials have been investigated for use in lithium-ion batteries, only

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984-462: A longer cycle life , and a longer calendar life . Also noteworthy is a dramatic improvement in lithium-ion battery properties after their market introduction in 1991: over the following 30 years, their volumetric energy density increased threefold while their cost dropped tenfold. There are at least 12 different chemistries of Li-ion batteries; see " List of battery types ." The invention and commercialization of Li-ion batteries may have had one of

1066-435: A manual zoom lens controlled by a ring on the lens like on an interchangeable-lens camera. Unlike most point-and-shoots with a zoom lens, bridge cameras require a manual lens cap , as they do not include an automatic lens cover. The additional size of a bridge camera compared to a compact camera makes room to fit a larger image sensor , a lens with a larger aperture or longer zoom, or some combination of both. For example,

1148-464: A monopod or tripod. This can also be used for attaching the camera to various brackets or adapters. With the hot-shoe for external flash, the Powershot G series can accept not only compatible flash units but also various connecting cords and wireless triggers. However, the Powershot G series is sensitive to the voltage produced by certain flash units, particularly older designs. Canon recommends that

1230-424: A new model — the G5 X Mark II — that replaced the micro USB port with a USB-C port and offered 4K video recording. The G5 X Mark II also included a new lens and a pop-up electronic viewfinder that required manual operation like on older Sony RX100 models. This update returned the line to a rangefinder-like body shape and emphasized its photography focus, compared to the more vlogging-oriented G7 X line. With

1312-424: A non-aqueous electrolyte is typically used, and a sealed container rigidly excludes moisture from the battery pack. The non-aqueous electrolyte is typically a mixture of organic carbonates such as ethylene carbonate and propylene carbonate containing complexes of lithium ions. Ethylene carbonate is essential for making solid electrolyte interphase on the carbon anode, but since it is solid at room temperature,

1394-449: A polymer gel as an electrolyte), a lithium cobalt oxide ( LiCoO 2 ) cathode material, and a graphite anode, which together offer high energy density. Lithium iron phosphate ( LiFePO 4 ), lithium manganese oxide ( LiMn 2 O 4 spinel , or Li 2 MnO 3 -based lithium-rich layered materials, LMR-NMC), and lithium nickel manganese cobalt oxide ( LiNiMnCoO 2 or NMC) may offer longer life and

1476-446: A process called insertion ( intercalation ) or extraction ( deintercalation ), respectively. As the lithium ions "rock" back and forth between the two electrodes, these batteries are also known as "rocking-chair batteries" or "swing batteries" (a term given by some European industries). The following equations exemplify the chemistry (left to right: discharging, right to left: charging). The negative electrode half-reaction for

1558-529: A range of alternative materials, replaced TiS 2 with lithium cobalt oxide ( LiCoO 2 , or LCO), which has a similar layered structure but offers a higher voltage and is much more stable in air. This material would later be used in the first commercial Li-ion battery, although it did not, on its own, resolve the persistent issue of flammability. These early attempts to develop rechargeable Li-ion batteries used lithium metal anodes, which were ultimately abandoned due to safety concerns, as lithium metal

1640-440: A smaller range of ISO sensitivity because of their typically smaller image sensor . Many bridge cameras have long zoom lenses which now often start at a super wide-angle focal length of 20 or 22mm equivalent focal length (in 35mm film camera terms), so the term "bridge camera" is sometimes used interchangeably with "megazoom", " superzoom ", or "ultrazoom". However, some bridge cameras have only moderate or short zooms (such as

1722-430: A solid organic electrolyte, polyethylene oxide , which was more stable. In 1985, Akira Yoshino at Asahi Kasei Corporation discovered that petroleum coke , a less graphitized form of carbon, can reversibly intercalate Li-ions at a low potential of ~0.5 V relative to Li+ /Li without structural degradation. Its structural stability originates from its amorphous carbon regions, which serving as covalent joints to pin

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1804-496: A telephoto zoom limit of over 400mm ( 35mm equivalent ), although some 21st-century cameras reach up to 2000mm. For this reason, bridge cameras typically fall into the category of superzoom cameras . The 24× Zoom Nikkor ED 4.6-110.4mm f2.8-5.0 on the Nikon Coolpix P90 , which in 35 mm equivalent focal length terms is a 26-624mm. Bridge cameras employ two types of electronic screens as viewfinders : The LCD and

1886-541: A temperature range of 5 to 45 °C (41 to 113 °F). Charging should be performed within this temperature range. At temperatures from 0 to 5 °C charging is possible, but the charge current should be reduced. During a low-temperature (under 0 °C) charge, the slight temperature rise above ambient due to the internal cell resistance is beneficial. High temperatures during charging may lead to battery degradation and charging at temperatures above 45 °C will degrade battery performance, whereas at lower temperatures

1968-523: A theoretical capacity of 1339 coulombs per gram (372 mAh/g). The positive electrode is generally one of three materials: a layered oxide (such as lithium cobalt oxide ), a polyanion (such as lithium iron phosphate ) or a spinel (such as lithium manganese oxide ). More experimental materials include graphene -containing electrodes, although these remain far from commercially viable due to their high cost. Lithium reacts vigorously with water to form lithium hydroxide (LiOH) and hydrogen gas. Thus,

2050-484: A variable f/2.8 to f/4 Leica creation. Sony's DSC-R1 issued as early as 2005 has a 10MP APS-sized sensor combined with a Zeiss zoom lens. In terms of image quality, these cameras are comparable to Canon's DSLRs and similarly priced. In late 2012, Techradar wrote that while the general compact camera market was on a downturn, the DSLR-like bridge camera market was continuing well. In 2014, CNET mentioned that for

2132-515: A very small number are commercially usable. All commercial Li-ion cells use intercalation compounds as active materials. The negative electrode is usually graphite , although silicon is often mixed in to increase the capacity. The electrolyte is usually lithium hexafluorophosphate , dissolved in a mixture of organic carbonates . A number of different materials are used for the positive electrode, such as LiCoO 2 , LiFePO 4 , and lithium nickel manganese cobalt oxides . During cell discharge

2214-440: Is a CuF 2 /Li battery developed by NASA in 1965. The breakthrough that produced the earliest form of the modern Li-ion battery was made by British chemist M. Stanley Whittingham in 1974, who first used titanium disulfide ( TiS 2 ) as a cathode material, which has a layered structure that can take in lithium ions without significant changes to its crystal structure . Exxon tried to commercialize this battery in

2296-417: Is a bit more than the heat of combustion of gasoline but does not consider the other materials that go into a lithium battery and that make lithium batteries many times heavier per unit of energy. Note that the cell voltages involved in these reactions are larger than the potential at which an aqueous solutions would electrolyze . During discharge, lithium ions ( Li ) carry the current within

2378-413: Is less common, more expensive, but more efficient, returning excess energy to other cells (or the entire pack) via a DC-DC converter or other circuitry. Balancing most often occurs during the constant voltage stage of charging, switching between charge modes until complete. The pack is usually fully charged only when balancing is complete, as even a single cell group lower in charge than the rest will limit

2460-636: Is much larger than other G-series cameras - weighing 739 grams. The camera also supports an optional electronic viewfinder: either the EVF-DC1 or the EVF-DC2. The G3 X matches the Sony RX10 III and IV for the longest zoom range available on a large-sensor bridge camera but in a much smaller package than its Sony counterparts. In Q3 2015, Canon introduced the PowerShot G5 X as the successor to

2542-498: Is no lens mount (unlike on a mirrorless interchangeable-lens camera ), the lens assembly of a bridge camera is able to extend into the body almost all the way to the sensor, making more efficient use of the space. All current models include a power zoom lens that retracts when not in use and is controlled by a lever on the body like on a point-and-shoot , but a few past models such as the Fujifilm X-S1 and S9000 included

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2624-462: Is recommended to be initiated when voltage goes below 4.05 V/cell. Failure to follow current and voltage limitations can result in an explosion. Charging temperature limits for Li-ion are stricter than the operating limits. Lithium-ion chemistry performs well at elevated temperatures but prolonged exposure to heat reduces battery life. Li‑ion batteries offer good charging performance at cooler temperatures and may even allow "fast-charging" within

2706-580: Is the location of a bridge camera’s electronic viewfinder (EVF): centered above the lens like a DSLR’s optical viewfinder . While many digital point-and-shoots lack a viewfinder, almost every bridge camera includes an EVF, with the exception of the Canon ;G3 X (that offered it as an optional accessory) and some low-end models, such as the Nikon ;B600. Like point-and-shoots and unlike DSLRs , bridge cameras are mirrorless. Because there

2788-410: Is ultrasonically welded to the aluminium current collector. Other salts like lithium perchlorate ( LiClO 4 ), lithium tetrafluoroborate ( LiBF 4 ), and lithium bis(trifluoromethanesulfonyl)imide ( LiC 2 F 6 NO 4 S 2 ) are frequently used in research in tab-less coin cells , but are not usable in larger format cells, often because they are not compatible with

2870-537: Is unstable and prone to dendrite formation, which can cause short-circuiting . The eventual solution was to use an intercalation anode, similar to that used for the cathode, which prevents the formation of lithium metal during battery charging. The first to demonstrate lithium ion reversible intercalation into graphite anodes was Jürgen Otto Besenhard in 1974. Besenhard used organic solvents such as carbonates, however these solvents decomposed rapidly providing short battery cycle life. Later, in 1980, Rachid Yazami used

2952-522: The Canon PowerShot G16 . The G5 X uses a 1-inch sensor, significantly larger than the G16's 1/1.7" sensor. The G5 X is essentially a G7 X with a built-in electronic viewfinder , whereas the G16 had an optical viewfinder. The G5 X also has a DSLR-like form factor with the viewfinder in the center instead of the rangefinder-like offset viewfinder on the G16. In 2019, the G5 X line was updated with

3034-492: The Canon Powershot G9 ), while many compact cameras have superzoom lenses but lack the advanced functions of a bridge camera. With zoom ranges and sales rapidly increasing in the early 21st century, every major camera manufacturer has at least one superzoom camera in its lineup. Digital bridge cameras offer the convenience of a point-and-shoot in the form factor of a DSLR . The most notable physical similarity

3116-631: The Sony RX100 VII (compact camera) and RX10 (bridge camera) have the same zoom range (24mm to 200mm equiv. ), but the RX100 VII’s maximum aperture at 200mm is f / 4.5, whereas the RX10’s maximum aperture at 200mm is f / 2.8, which means it can collect over twice the amount of light. Likewise, the Canon SX620 (compact camera) and G3 X (bridge camera) both have a 25× optical zoom, but

3198-401: The constant current phase, the charger applies a constant current to the battery at a steadily increasing voltage, until the top-of-charge voltage limit per cell is reached. During the balance phase, the charger/battery reduces the charging current (or cycles the charging on and off to reduce the average current) while the state of charge of individual cells is brought to the same level by

3280-509: The electronic viewfinder (EVF). All bridge cameras have an LCD with live-preview and usually in addition either an EVF or an optical viewfinder (OVF) (non- parallax -free, as opposed to the OVF of DSLRs, which is parallax-free). A high-quality EVF is one of the advanced features that distinguish bridge cameras from consumer compact cameras. All DSLRs, by definition, have a through-the-lens OVF. Newer DSLR models typically also allow "live view" on

3362-417: The 1.5-inch sensor with a 24-megapixel APS-C sensor used in many Canon EOS DSLR and mirrorless cameras. The camera also was much reduced in size and weight, weighting only 399 grams. To achieve the reduced size the zoom range was reduced to 15–45 mm (24–72 mm in 35 mm equivalence) and the size of the aperture was reduced from f/2.0-3.9 to f/2.8-5.6. The Mark III also has a built-in viewfinder and

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3444-733: The 2019 Nobel Prize in Chemistry "for the development of lithium-ion batteries". Jeff Dahn received the ECS Battery Division Technology Award (2011) and the Yeager award from the International Battery Materials Association (2016). In April 2023, CATL announced that it would begin scaled-up production of its semi-solid condensed matter battery that produces a then record 500 Wh/kg . They use electrodes made from

3526-476: The 2019 Nobel Prize in Chemistry for their contributions to the development of lithium-ion batteries. Lithium-ion batteries can be a safety hazard if not properly engineered and manufactured because they have flammable electrolytes that, if damaged or incorrectly charged, can lead to explosions and fires. Much progress has been made in the development and manufacturing of safe lithium-ion batteries. Lithium-ion solid-state batteries are being developed to eliminate

3608-588: The G1 X camera-lens system can be compared to the APS-C DSLRs using the Canon EF-S 18-55 mm f/3.5-5.6 IS II SLR Kit Lens: the G1 X is a little faster (wider aperture) at the wide angle and comparable thereafter, but with a longer zoom. Released at early 2014, the G1 X Mark II has a 13.1-megapixel (in 4:3 aspect ratio), but still 1.5-inch CMOS sensor as the predecessor, a 24–120 mm (5x) f/2-3.9 relatively

3690-607: The G3 ;X’s sensor is over 4 times as large as the SX620’s. Superzoom compact cameras have reached up to 40× optical zoom , whereas bridge cameras have reached up to 125× optical zoom . Bridge cameras typically have small image sensors , allowing their lenses also to be smaller than a 35mm or APS-C SLR lens covering the same zoom range. As a result, very large zoom ranges (from wide-angle to telephoto , including macro ) are feasible with one lens. The typical bridge camera has

3772-651: The G7 X, Canon added its own model to the large-sensor compact camera market. The G7X is Canon's first 1-inch sensor model and boasts 20 megapixels and the DIGIC 6 image processor. Despite this, the camera is still small enough to be pocketable like its primary competitor, the Sony RX100 . It has a 4.2x zoom (24–100 mm in 35 mm format), a maximum aperture of f/1.8-f/2.8, ISO 12800, Full HD video shooting, 31 AF points, and Wi-Fi/NFC support. It inherits many characteristics of

3854-476: The G7 using a free firmware add-on. The G9 was released in 2007. RAW support was restored, and it has a larger LCD screen, and a 1/1.7″ sensor rather than the 1/1.8″ sensor on previous models. The G11, released in 2009, reintroduced the flip out and twist LCD (2.8″). It also has a lower resolution sensor than that of its predecessor, the G10, because the new CCD favoured low light performance over resolution. The G15

3936-564: The G9 X line with the G9 X Mark II offering the new Digic 7 processor, faster operation and built-in RAW processing. No external changes were made. 320×240 15 fps 640×480 30 fps No remote capture support. 720p 30 fps 720p 30 fps 640×480 120 fps 320×240 240 fps 640×480 120 fps 320×240 240 fps [REDACTED] [REDACTED] 4k 30 fps Note that

4018-497: The LCD screen as an alternative to the OVF, although frequently without autofocus or with very slow autofocus when in that mode. Mirrorless interchangeable lens cameras , which like bridge cameras are mirrorless, rely on electronic viewfinders or LCD screens and generally do not sacrifice autofocus features when using these displays. Just as in compact cameras, there is a trend towards larger sensors in bridge cameras, as well. Sony started

4100-880: The PowerShot G9 X as the successor to the Canon PowerShot S120 . Even with the 1-inch sensor, G9 X is similar in size to the S120. The larger sensor necessitated that the zoom range be reduced from 5x to 3x, that is from 24-120 mm to 28-84 mm. With the introduction of the G9 X, the S-series was discontinued. It also meant the end of the use of 1/1.7" (9.5 mm diagonal) sensors in Canon cameras. Higher-end models henceforth used 1-inch (16 mm diagonal) sensors or larger, and whereas other models using 1/2.3" (7.7 mm diagonal) sensors. In 2017 Canon updated

4182-434: The aluminium current collector. Copper (with a spot-welded nickel tab) is used as the current collector at the negative electrode. Current collector design and surface treatments may take various forms: foil, mesh, foam (dealloyed), etched (wholly or selectively), and coated (with various materials) to improve electrical characteristics. Depending on materials choices, the voltage , energy density , life, and safety of

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4264-416: The area of non-flammable electrolytes as a pathway to increased safety based on the flammability and volatility of the organic solvents used in the typical electrolyte. Strategies include aqueous lithium-ion batteries , ceramic solid electrolytes, polymer electrolytes, ionic liquids, and heavily fluorinated systems. Research on rechargeable Li-ion batteries dates to the 1960s; one of the earliest examples

4346-399: The battery cell from the negative to the positive electrode, through the non- aqueous electrolyte and separator diaphragm. During charging, an external electrical power source applies an over-voltage (a voltage greater than the cell's own voltage) to the cell, forcing electrons to flow from the positive to the negative electrode. The lithium ions also migrate (through the electrolyte) from

4428-706: The category of 1 inch sensor equipped bridge cameras in 2012 with the Sony Cyber-shot DSC-RX100 , followed in late 2013 with the release of the Sony RX10 . In 2014, Panasonic followed this with the FZ1000 , which has a larger zoom range, up to 400mm equivalent (Sony's RX10 goes to 200mm equivalent). In contrast with the RX10's constant f/2.8 widest aperture Zeiss lens, the Panasonic FZ1000 has

4510-406: The early G series were: The G7 marked a major change in the G series. Previous G series models had a fast lens, raw image format capture, and a tilt-and-swivel LCD. These were all considered hallmarks of the G series, but were removed or altered for the G7. Some of the major changes included: Many of the changes made allowed the G7 to be significantly slimmer than previous G series cameras (e.g.,

4592-511: The entire battery's usable capacity to that of its own. Balancing can last hours or even days, depending on the magnitude of the imbalance in the battery. During the constant voltage phase, the charger applies a voltage equal to the maximum cell voltage times the number of cells in series to the battery, as the current gradually declines towards 0, until the current is below a set threshold of about 3% of initial constant charge current. Periodic topping charge about once per 500 hours. Top charging

4674-419: The external circuit toward the cathode where they recombine with the cathode material in a reduction half-reaction. The electrolyte provides a conductive medium for lithium ions but does not partake in the electrochemical reaction. The reactions during discharge lower the chemical potential of the cell, so discharging transfers energy from the cell to wherever the electric current dissipates its energy, mostly in

4756-481: The external circuit. During charging these reactions and transports go in the opposite direction: electrons move from the positive electrode to the negative electrode through the external circuit. To charge the cell the external circuit has to provide electrical energy. This energy is then stored as chemical energy in the cell (with some loss, e. g., due to coulombic efficiency lower than 1). Both electrodes allow lithium ions to move in and out of their structures with

4838-864: The flammable electrolyte. Improperly recycled batteries can create toxic waste, especially from toxic metals, and are at risk of fire. Moreover, both lithium and other key strategic minerals used in batteries have significant issues at extraction, with lithium being water intensive in often arid regions and other minerals used in some Li-ion chemistries potentially being conflict minerals such as cobalt . Both environmental issues have encouraged some researchers to improve mineral efficiency and find alternatives such as Lithium iron phosphate lithium-ion chemistries or non-lithium-based battery chemistries like iron-air batteries . Research areas for lithium-ion batteries include extending lifetime, increasing energy density, improving safety, reducing cost, and increasing charging speed, among others. Research has been under way in

4920-470: The graphite is The positive electrode half-reaction in the lithium-doped cobalt oxide substrate is The full reaction being The overall reaction has its limits. Overdischarging supersaturates lithium cobalt oxide , leading to the production of lithium oxide , possibly by the following irreversible reaction: Overcharging up to 5.2  volts leads to the synthesis of cobalt (IV) oxide, as evidenced by x-ray diffraction : The transition metal in

5002-562: The greatest impacts of all technologies in human history , as recognized by the 2019 Nobel Prize in Chemistry . More specifically, Li-ion batteries enabled portable consumer electronics , laptop computers , cellular phones , and electric cars , or what has been called the e-mobility revolution. It also sees significant use for grid-scale energy storage as well as military and aerospace applications. Lithium-ion cells can be manufactured to optimize energy or power density. Handheld electronics mostly use lithium polymer batteries (with

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5084-443: The internal resistance of the battery may increase, resulting in slower charging and thus longer charging times. Batteries gradually self-discharge even if not connected and delivering current. Li-ion rechargeable batteries have a self-discharge rate typically stated by manufacturers to be 1.5–2% per month. The rate increases with temperature and state of charge. A 2004 study found that for most cycling conditions self-discharge

5166-564: The late 1970s, but found the synthesis expensive and complex, as TiS 2 is sensitive to moisture and releases toxic H 2 S gas on contact with water. More prohibitively, the batteries were also prone to spontaneously catch fire due to the presence of metallic lithium in the cells. For this, and other reasons, Exxon discontinued the development of Whittingham's lithium-titanium disulfide battery. In 1980, working in separate groups Ned A. Godshall et al., and, shortly thereafter, Koichi Mizushima and John B. Goodenough , after testing

5248-435: The layers together. Although it has a lower capacity compared to graphite (~Li0.5C6, 186 mAh g–1), it became the first commercial intercalation anode for Li-ion batteries owing to its cycling stability. In 1987, Yoshino patented what would become the first commercial lithium-ion battery using this anode. He used Goodenough's previously reported LiCoO 2 as the cathode and a carbonate ester -based electrolyte. The battery

5330-434: The maximum trigger voltage be less than 6 volts for any flash or accessory attached to the hot-shoe. Flash compatibility is somewhat of an issue with the Powershot G series. Canon EX flashes are compatible but all EX features may not necessarily be usable. In particular, when the Powershot G is in manual exposure mode, the external flash is also in manual mode; that is, ETTL flash control is not operable. John D McHugh used

5412-428: The negative electrode is the anode and the positive electrode the cathode : electrons flow from the anode to the cathode through the external circuit. An oxidation half-reaction at the anode produces positively charged lithium ions and negatively charged electrons. The oxidation half-reaction may also produce uncharged material that remains at the anode. Lithium ions move through the electrolyte; electrons move through

5494-410: The positive electrode, cobalt ( Co ), is reduced from Co to Co during discharge, and oxidized from Co to Co during charge. The cell's energy is equal to the voltage times the charge. Each gram of lithium represents Faraday's constant /6.941, or 13,901 coulombs. At 3 V, this gives 41.7 kJ per gram of lithium, or 11.6 kWh per kilogram of lithium. This

5576-492: The positive to the negative electrode where they become embedded in the porous electrode material in a process known as intercalation . Energy losses arising from electrical contact resistance at interfaces between electrode layers and at contacts with current collectors can be as high as 20% of the entire energy flow of batteries under typical operating conditions. The charging procedures for single Li-ion cells, and complete Li-ion batteries, are slightly different: During

5658-432: The powered circuit through two pieces of metal called current collectors. The negative and positive electrodes swap their electrochemical roles ( anode and cathode ) when the cell is charged. Despite this, in discussions of battery design the negative electrode of a rechargeable cell is often just called "the anode" and the positive electrode "the cathode". In its fully lithiated state of LiC 6 , graphite correlates to

5740-457: The presence of ethylene carbonate solvent (which is solid at room temperature and is mixed with other solvents to make a liquid). This represented the final innovation of the era that created the basic design of the modern lithium-ion battery. In 2010, global lithium-ion battery production capacity was 20 gigawatt-hours. By 2016, it was 28 GWh, with 16.4 GWh in China. Global production capacity

5822-615: The previous G-series cameras, including the comparable G1 X Mark II. The G7 X is the first G-series camera without a hot shoe. In 2016 Canon announced the Canon PowerShot G7 X Mark II which follows the original G7 X. It retains the same sensor and lens as its predecessor. The main improvement is the new DIGIC 7 Processor. In fact the G7 X Mark II is the first Canon camera to use this new chip. This new chip leads to better AF performance, object tracking, reduced ISO noise and higher speed burst shooting. Some other improvements are that

5904-621: The screen can now flip both up and down, a new grip, tiltable flash, auto functionality for the ND filter, battery charging over USB, and a new timelapse mode. In 2019, the G7 X line was updated with a new model — the G7 X Mark III — that replaced the micro USB port with a USB-C port and offered 4K video recording. The G7 X Mark III had mixed reviews due to inconsistent autofocus especially at close range, but it continued to be popular thanks to its portability, ease of use, and pleasant straight-out-of-camera color rendition. In Q3 2015, Canon introduced

5986-399: The series (all containing "X" in their name) have larger sensors than most other point-and-shoot cameras. In recent years, smartphones and interchangeable-lens cameras have squeezed the compact point-and-shoot market, and as of February 2024 the vlogger-friendly G7 X Mark II and G7 X Mark III remain the only models in the series still in production and available new. Common features across

6068-663: The smallest digital SLRs (DSLR), but lack interchangeable lenses , and almost all digital bridge cameras lack an optical viewfinder system. The phrase "bridge camera" has been in use at least since the 1980s, and continues to be used with digital cameras . The term was originally used to refer to film cameras which "bridged the gap" between point-and-shoot cameras and SLRs. Like other cameras, most current bridge cameras are digital . These cameras typically feature full manual controls over shutter speed , aperture , ISO sensitivity , color balance and metering. Generally, their feature sets are similar to consumer DSLRs, except for

6150-466: The thickness of the G7 is 4.25 cm while the G6 is 7.3 cm), making it more portable. Canon's removal of RAW shooting support was heavily criticized. DPReview expressed their disappointment with the loss of RAW format, while Luminous Landscape stated that the removal of RAW required too many technical decisions had to be made while shooting instead of during post-processing. RAW support can be enabled on

6232-411: The weight up to G12 is for the camera without the battery and from G1 X on the camera including the battery and the memory card. The Powershot G series can employ several photographic accessories: Starting from the G7, there is a bayonet mount on the front of the camera around the lens to directly attach lenses and accessories. Powershot G series cameras have a standard threaded socket for mounting to

6314-419: Was 767 GWh in 2020, with China accounting for 75%. Production in 2021 is estimated by various sources to be between 200 and 600 GWh, and predictions for 2023 range from 400 to 1,100 GWh. In 2012, John B. Goodenough , Rachid Yazami and Akira Yoshino received the 2012 IEEE Medal for Environmental and Safety Technologies for developing the lithium-ion battery; Goodenough, Whittingham, and Yoshino were awarded

6396-630: Was assembled in the discharged state, which made it safer and cheaper to manufacture. In 1991, using Yoshino's design, Sony began producing and selling the world's first rechargeable lithium-ion batteries. The following year, a joint venture between Toshiba and Asashi Kasei Co. also released a lithium-ion battery. Significant improvements in energy density were achieved in the 1990s by replacing Yoshino's soft carbon anode first with hard carbon and later with graphite. In 1990, Jeff Dahn and two colleagues at Dalhousie University (Canada) reported reversible intercalation of lithium ions into graphite in

6478-648: Was estimated at 2% to 3%, and 2 –3% by 2016. By comparison, the self-discharge rate for NiMH batteries dropped, as of 2017, from up to 30% per month for previously common cells to about 0.08–0.33% per month for low self-discharge NiMH batteries, and is about 10% per month in NiCd batteries . Bridge camera A bridge camera is a type of camera that fills the niche between relatively simple point-and-shoot cameras and interchangeable-lens cameras such as mirrorless cameras and single-lens reflex cameras (SLRs). They are often comparable in size and weight to

6560-484: Was primarily time-dependent; however, after several months of stand on open circuit or float charge, state-of-charge dependent losses became significant. The self-discharge rate did not increase monotonically with state-of-charge, but dropped somewhat at intermediate states of charge. Self-discharge rates may increase as batteries age. In 1999, self-discharge per month was measured at 8% at 21 °C, 15% at 40 °C, 31% at 60 °C. By 2007, monthly self-discharge rate

6642-444: Was significant that it did not replace the older G12 but created a parallel model in the first time in G-series. Later that trend would continue with five parallel models from 2015 on. The camera is also bigger and heavier than the other G-series cameras, and the zoom range in equivalent 35 mm is only 28-112 mm (4x). With its maximum aperture over its zoom range being F2.8-5.8, and with its sensor smaller than Canon APS-C sensor,

6724-768: Was the successor to the G12 as the cheaper G series model. It marked a return to a lens faster than those of early G cameras. It also has: The G16 offered only minor improvements over the G15, for example: The G1 X was introduced in February 2012 and is the first large-sensor entry in the series as designated by the "X" after the model number. It is also the first model in the series with a CMOS sensor. The G1 X's sensor measures 18.7 mm × 14.0 mm (1.5 in), which makes it 16 percent larger than Micro Four Thirds (MFT) sensors and 20 percent smaller than Canon's APS-C sensors. G1 X

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