Chemistry: electrical current producing apparatus – product – and – Plural concentric or single coiled electrode
Patent
1985-09-30
1986-11-11
LeFevour, Charles F.
Chemistry: electrical current producing apparatus, product, and
Plural concentric or single coiled electrode
429 7, 429121, 429196, H01M 400
Patent
active
046222774
ABSTRACT:
This invention provides a design for spirally wound electrochemical cells which improves their safety during abuse such as voltage reversal. The invention comprises coupling a first segment of inert conductive metal to the cathode and a dendrite target comprised of an inert conductive metal to the anode. When these electrodes are spirally wound together the two segments of inert conductive metal face each other, held in physical separation by the separator, whereby during voltage reversal a dendrite grows from said first segment to said dendrite target.
REFERENCES:
patent: 3900340 (1975-08-01), Greaser et al.
patent: 4049882 (1977-09-01), Beatty
patent: 4184012 (1980-01-01), Barrella
patent: 4482615 (1984-11-01), Rosansky et al.
Bedder Paul L.
Moses Peter R.
Patel Bhupendra
Reise Terrence F.
Taylor Alwyn H.
Cornell Ronald S.
Duracell Inc.
LeFevour Charles F.
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