Non-aqueous electrolyte secondary battery

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

1992-07-28

1993-12-28

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

Plural concentric or single coiled electrode

429194, 429218, H01M 1040, H01M 496

Patent

active

052738426

ABSTRACT:
There is disclosed a non-aqueous electrolyte secondary battery in which carbonaceous material is used as the anode active material and charge/discharge is carried out by doping/undoping of lithium. The carbonaceous material has a grading distribution such that the 10% cumulative or accumulated diameter is 6 to 20 .mu.m, the 50% cumulative diameter is 20 to 55 .mu.m, and the 90% cumulative diameter is 55 to 90 .mu.m. When a carbonaceous material such that the grading distribution satisfies the above condition is used as the anode active material, the self-discharge rate is suppressed and occurrence of an internal short-circuit is also prevented.

REFERENCES:
patent: 4980250 (1990-12-01), Takahashi et al.
patent: 5028500 (1991-07-01), Fong
patent: 5053297 (1991-10-01), Yamahira et al.
patent: 5093216 (1992-03-01), Azuma et al.

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