Electrochemical cell having a controlled electrode surface and a

Details Electrochemical cell having a controlled electrode surface and a Electrochemical cell having a controlled electrode surface and a

1998-10-26

2000-04-04

Bell, Bruce F.

Chemistry: electrical current producing apparatus, product, and

Sealed cell having gas prevention or elimation means

Prevention or elimination means is one of the cell...

57101, 57105, 57324, 57325, 57331, 572319, 5723195, H01M 1034

Patent

active

060459379

ABSTRACT:
An electrochemical cell, and an associated process, wherein the cell includes a controlled electrode surface comprising an electrode with a carbonaceous surface, an electrolyte and a reduced additive. The reduced additive is formulated from an additive which is either soluble or insoluble in the solvated electrolyte prior to reduction. The invention further includes a passivating layer at the carbonaceous electrode/electrolyte interface. The passivating layer includes the additive and/or the reduced additive. This passivating layer substantially precludes contact between electrolyte solvent and the carbonaceous surface of the electrode to, in turn, substantially prevent gas formation within the cell, which would otherwise result from decomposition of the solvent upon contact with the carbonaceous surface. Also, the additive and/or the reduced additive will likewise be substantially precluded from generating a gas upon its decomposition.

REFERENCES:
patent: 5529859 (1996-06-01), Shu et al.
patent: 5626981 (1997-05-01), Simon et al.

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