| 摘要 |
<p>An improved battery paste composition and a lead-acid electrochemical cell (22) which incorporates the composition. The cell (22) includes a positive current collector (30) and a negative current collector (40) which are each coated with a paste (54, 60) containing one or more lead-containing compositions and a paste vehicle to form a positive plate (55) and a negative plate (61). An absorbent electrolyte-containing separator member (50) may also be positioned between the positive and negative plates (55, 61). The paste (54, 60) on the positive current collector (30), the negative current collector (40), 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.</p> |
