Lithium secondary battery

Details Lithium secondary battery Lithium secondary battery

H - Electricity

01

M

H01M 10/26 (2006.01) H01M 10/40 (2006.01)

Patent

CA 2094046

- 20 - Abstract of the Disclosure A lithium secondary battery comprising a positive electrode (3), an electrolyte layer (2) composing of a solid polymer electrolyte, and a negative electrode (1) using metallic lithium or lithium alloy as an active material. In the battery of this invention, the electrolyte layer (2) comprises at least two layers in which one layer (21) in contact with the negative electrode is composed of an electrolyte hard to react with a negative active material and the other layer (22) is composed of an electrolyte easy to react with the negative active material. In the battery of this invention, a formation of dendrite of lithium in the negative electrode is restrained by the one layer (21) and a large electric conductivity is maintained and a growth of the dendrite is restrained by the other layer (22).

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