| 摘要 |
21894-408 A lead-acid battery capable of delivering high lowtemperature discharge current for a long operating time is disclosed. The low-temperature performance of the battery is enhanced by supplying its negative electrode with an expander. The expander, a soluble lignin derivative, is liberated into the electrolyte during formation and operation of the battery, as a result of oxidative degradation of a lignin-containing repository substance added to the active material of the positive electrode. The liberated expander is taken up from the electrolyte by the negative electrode. It makes possible to improve the electrical charge retention by the negative electrode without adversely affecting its low-temperature performance, by producing the electrode without adding an expander. |
