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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

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.

대표청구항

[ The invention that is claimed is:] [1.] A paste for use in a lead-acid electrochemical cell comprising:at least one lead-containing composition;a paste vehicle; anda paste additive selected from the group consisting of polyvinylsulfonic acid and salts thereof.

[ The invention that is claimed is:] [1.] A paste for use in a lead-acid electrochemical cell comprising:at least one lead-containing composition;a paste vehicle; anda paste additive selected from the group consisting of polyvinylsulfonic acid and salts thereof.