Non-aqueous secondary electrochemical battery

Details Non-aqueous secondary electrochemical battery Non-aqueous secondary electrochemical battery

1993-06-14

1996-06-11

Nuzzolillo, M.

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

429197, 429199, 429218, 429221, 429223, 429224, H01M 1040

Patent

active

055254438

ABSTRACT:
A non-aqueous secondary electrochemical battery which comprises a complex oxide containing lithium for a cathode, a carbon material for an anode, and a mixed solvent for an electrolyte is disclosed. The mixed solvent is obtained by dissolving an inorganic salt in a mixture of a cyclic ester and a chain ester. The cyclic ester is selected from the group consisting of ethylene carbonate, propylene carbonate, butylene carbonate, and .gamma.-butyrolactone. The chain ester is selected from the group consisting of diethyl carbonate, dimethyl carbonate, ethyl formate, methyl formate, ethyl acetate, methyl acetate, and dimethyl sulfoxide. In this way, a non-aqueous secondary electrochemical battery having improved cycle life capabilities, discharge performance, and low temperature performance can be obtained.

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