Method of manufacturing a positive electrode active material...

Details Method of manufacturing a positive electrode active material... Method of manufacturing a positive electrode active material...

H - Electricity

01

M

H01M 10/00 (2006.01) H01M 2/00 (2006.01)

Patent

CA 2331602

A secondary battery exhibiting a long cycle life and comprising a negative electrode active material made of lithium or zinc is provided, the battery at least having a negative electrode made of lithium or zinc serving as the negative electrode active material, an electrolyte (electrolyte solution), a separator, a positive electrode made of a positive electrode active material, a collecting electrode and a battery case, wherein at least the surface of the negative electrode is covered with a film having a structure which allows ions relating to the battery reactions to pass through. Since growth of dendrite of lithium or zinc at the time of the charge can be prevented, short circuit between the negative electrode and the positive electrode can be prevented. Therefore, the charge/discharge cycle life can significantly be lengthened. As a result, a lithium secondary battery, a nickel-zinc secondary battery, an air-zinc secondary battery, a bromine-zinc secondary battery and a silver oxide-zinc secondary battery of the long cycle life can be manufactured.

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