Non-aqueous electrolyte lithium secondary battery

Details Non-aqueous electrolyte lithium secondary battery Non-aqueous electrolyte lithium secondary battery

H - Electricity

01

M

H01M 10/24 (2006.01) H01M 4/24 (2006.01) H01M 4/60 (2006.01) H01M 4/62 (2006.01) H01M 10/26 (2006.01) H01M 4/58 (2006.01)

Patent

CA 2181860

A non aqueous electrolyte lithium secondary battery, comprising a cathode containing as active material, a material that can be doped/undoped with lithium ions, an anode containing, as active material, a carbonaceous material that can be doped/undoped with lithium ions, a separator interposed between the cathode and anode and an electrolyte prepared by dissolving lithium salt in an organic solvent, wherein the anode contains a polymer having carbonate groups represented by the structural formula [I]: Image [I] said polymer having a number average molecular weight of not less than 300 and not more than 200,000. The lithium secondary battery whose cycle life and high- rate capacity are improved without reducing low-temperature capacity.

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