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单词 nickel-iron accumulator
释义 nickel-iron accumulator(Edison cell; NIFE cell)
A secondary cell devised by Thomas Edison (1847–1931) having a positive plate of nickel oxide and a negative plate of iron both immersed in an electrolyte of potassium hydroxide. The reaction on discharge is
2NiOOH.H2O + Fe → 2Ni(OH)2 + Fe(OH)2
,the reverse occurring during charging. Each cell gives an e.m.f. of about 1.2 volts and produces about 100 kJ per kilogram during each discharge. The nickel-cadmium cell is a similar device with a negative cadmium electrode. It is often used as a dry cell. Compare lead-acid accumulator
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更新时间:2025/6/23 4:04:47