发明名称 |
Batterien und dafür verwendbare Materialien |
摘要 |
Batteries based on lead chemistry, e.g., lead-acid batteries, are substantially improved through the use of a particular positive material. This material is formed by the electrochemical conversion of tetrabasic lead sulfate (TTB) where this TTB is synthesized at a pH in the range 9.3 to 12 and under reaction conditions that provide a substantial excess of sulfate to the reactive lead. The resulting materials provide needle-like structures with a width generally in the range 3 to 1<0>m. The relative narrow needles, when employed on the positive electrode of a lead acid battery, improve the efficiency of formation, provide good adhesive to the positive plate, extend battery life, as well as, yield excellent capacity per gram of active material. |
申请公布号 |
DE69225672(D1) |
申请公布日期 |
1998.07.02 |
申请号 |
DE1992625672 |
申请日期 |
1992.10.21 |
申请人 |
AT & T CORP., NEW YORK, N.Y., US |
发明人 |
VYAS, BRIJESH, WARREN, NEW JERSEY 07059, US |
分类号 |
C01G21/08;H01M4/20;H01M4/56;H01M4/57;H01M10/12 |
主分类号 |
C01G21/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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