Battery paste compositions and electrochemical cells for use the

Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Electrode

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Details

429225, 141 11, 296235, H01M 462, H01M 456

Patent

active

059980621

ABSTRACT:
An improved battery paste composition and a lead-acid electrochemical cell which incorporates the composition. The cell includes a positive current collector and a negative current collector which are each coated with a paste containing one or more lead-containing compositions and a paste vehicle to form a positive plate and a negative plate. An absorbent electrolyte-containing separator member may also be positioned between the positive and negative plates. The paste on the positive current collector, the negative current collector, or both further includes a special additive consisting of polyvinylsulfonic acid or salts thereof which provides many benefits including improved battery cycle life, increased charge capacity, and enhanced overall stability. The additive also makes the pastes smoother and more adhesive, thereby improving the paste application process. The paste compositions of interest may be used in conventional flat-plate cells or in spirally wound batteries with equal effectiveness.

REFERENCES:
patent: 3419431 (1968-12-01), Michaels
patent: 3480478 (1969-11-01), Sohn et al.
patent: 4232100 (1980-11-01), Magnusson et al.
patent: 4902532 (1990-02-01), Seo
patent: 5871862 (1999-02-01), Olson

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