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potassium hydroxide in water. Cells are provide with vent caps to prevent reaction of the electrolyte with carbon dioxide in the air. Theoretically as little of two grams of silver are required for each ampere-hour of capacity, but practical cells require between 3 and 3.5 grams. Because the charging voltage is higher than the discharge voltage, the watt-hour efficiency of a silver–cadmium cell is about 70%; ampere-hour efficiency is about 98%. The usual recommended charging method is constant-current charging at a 10 or 20 hour rate, (restoring the capacity of the battery over 10 or 20 hours), and cut off of charging at 1.6 volts per cell. Cells are commercially manufactured from 2 to 2500 ampere-hours capacity, but are often customized for particular uses.
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Renewed commercial development occurred during the 1950s, to take advantage of the better cycle life of the silver–cadmium system compared to silver-zinc. Like other silver-oxide battery systems, silver–cadmium batteries have relatively flat voltage during discharge. However, high-rate performance is not as good as for silver-zinc batteries. To preserve the operating life of cells, they may be shipped "dry" and the end-user adds electrolyte just before use.
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The positive electrode is made of sintered silver powder pasted onto a silver grid as current collector; the silver oxide may be formed in a separate process or may be formed on first charging of the cell. The cadmium negative electrode is formed of a pasted grid. Electrolytes are solutions of
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around 1900, who used them in a demonstration electric car and whose company commercially manufactured the cells. These original cells suffered from short life, and it was not until 1941 that an improved separator material was developed to prevent migration of the silver oxide within the cell.
46:. A silver–cadmium battery provides more energy than a nickel–cadmium cell of comparable weight. It has higher life cycle expectancy than silver–zinc cells, but lower terminal voltage and lower energy density. However, the high cost of silver and the
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oxide as the positive terminal, and an alkaline water-based electrolyte. It produces about 1.1 volts per cell on discharge, and about 40 watthours per kilogram
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Innovators in
Battery Technology: Profiles of 95 Influential Electrochemists
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The first silver–cadmium batteries were developed by
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34:is a type of rechargeable battery using
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657:This technology-related article is a
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79:Battery Reference Book third Edition
124:Handbook of Batteries Third Edition
661:. You can help Knowledge (XXG) by
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649:
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38:metal as its negative terminal,
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27:Type of rechargeable battery
50:restrict its applications.
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644:
332:Metal–air electrochemical
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44:specific energy density
718:Rechargeable batteries
634:Semipermeable membrane
423:Lithium–iron–phosphate
32:silver–cadmium battery
18:Silver-cadmium battery
505:Rechargeable alkaline
183:Electrochemical cells
147:List of battery types
89:pages 5-5 through 5-7
77:Thomas P J Crompton,
485:Nickel–metal hydride
122:Davide Linden (ed),
495:Polysulfide–bromide
337:Nickel oxyhydroxide
229:Thermogalvanic cell
134:, pages 33.1 – 33.2
126:,McGraw-Hill, 2002
48:toxicity of cadmium
258:(non-rechargeable)
202:Concentration cell
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102:McFarland, 2016,
16:(Redirected from
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723:Technology stubs
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438:Lithium–titanate
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207:Electric battery
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428:Lithium–polymer
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663:expanding it
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540:Zinc–bromine
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347:Silver oxide
282:Chromic acid
254:Primary cell
234:Voltaic pile
212:Flow battery
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629:Salt bridge
614:Electrolyte
545:Zinc–cerium
530:Solid state
515:Silver–zinc
490:Nickel–zinc
475:Nickel–iron
450:Molten salt
418:Dual carbon
413:Lithium ion
408:Lithium–air
367:Zinc–carbon
342:Silicon–air
322:Lithium–air
702:Categories
582:Cell parts
573:Solar cell
555:Other cell
520:Sodium ion
391:Automotive
108:1476622787
87:0080499953
66:References
619:Half-cell
609:Electrode
568:Fuel cell
445:Metal–air
396:Lead–acid
312:Leclanché
224:Fuel cell
599:Catalyst
460:Nanowire
455:Nanopore
401:gel–VRLA
362:Zinc–air
267:Alkaline
141:See also
708:Cadmium
604:Cathode
357:Zamboni
327:Mercury
292:Daniell
36:cadmium
713:Silver
594:Binder
352:Weston
277:Bunsen
130:
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40:silver
589:Anode
307:Grove
287:Clark
190:Types
659:stub
624:Ions
128:ISBN
104:ISBN
83:ISBN
297:Dry
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115:^
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
