Nonaqueous electrolyte secondary battery

Details Nonaqueous electrolyte secondary battery Nonaqueous electrolyte secondary battery

1990-10-04

1992-09-15

Kalafut, Stephen

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

429218, H01M 452

Patent

active

051477386

ABSTRACT:
A nonaqueous electrolyte secondary battery is constituted of an anode made of lithium or lithium compound, a nonaqueous electrolyte containing lithium compound, and a cathode active material. The cathode active material is represented by expression Li.sub.X Co.sub.(1-Y) M.sub.Y O.sub.2 (0.85.ltoreq.X.ltoreq.1.3, 0.05.ltoreq.Y.ltoreq.0.35, wherein M is a metal of at least one of W, Mn, Ta, Ti, Nb). The battery using the cathode active material of the present invention is improved in discharge capacity deterioration rate based on cycle and discharge capacity.

REFERENCES:
patent: 4366215 (1982-12-01), Coetzer et al.
patent: 4369105 (1983-01-01), Caldwell et al.
patent: 4542083 (1985-09-01), Cava et al.
patent: 4567031 (1986-01-01), Riley
Matsumoto et al, Chemical Abstracts, vol. 110, No. 79372u, Mar. 1989.
Chemical Abstracts, vol. 112, No. 18, Apr. 30, 1990, p. 235, Abstract No. 162253t, Columbus, Ohio, USA; & JP-A-1-294,358, Nov. 1989, Abstract.

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