Invention Grant
US07754386B2 Rechargeable alkaline manganese cell having reduced capacity fade and improved cycle life 失效
可充电碱锰电池容量降低,循环寿命延长

Rechargeable alkaline manganese cell having reduced capacity fade and improved cycle life
Abstract:
Rechargeable galvanic cells are disclosed which comprise a manganese dioxide cathode, a zinc anode and a potassium hydroxide electrolyte wherein the cathode includes additive compounds to increase the cycle life and cumulative discharge capacity of the cell. The additives comprise at least a strontium compound and optionally a barium and/or calcium compound. Cells including the additive(s) desirably have an individual discharge capacity after 50 deep discharge-charge cycles of at least 0.100 Ah/gMnO2.
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