| 摘要 |
<p>The present invention relates to a lead-acid battery including a positive electrode plate, a negative electrode plate, and an electrolyte solution, wherein the negative electrode plate includes a negative electrode current collector having a lattice-like grid part, a rim part continuously formed in the rim of the grid part, and an ear part formed to protrude from the rim part for current collection and wherein a surface layer containing an alloy or a metal selected from a Pb-Sn-based alloy, a Pb-Sb-based alloy, a Pb-Sn-Sb-based alloy, and Sn is formed on the surface of at least one of the rim part and the ear part; and also to a method for manufacturing the same. The lead-acid battery has a cycle life improved more than that of a lead-acid battery having no surface layer; however there is a problem that since the stratification phenomenon of the electrolyte solution can not be suppressed, the lower part of the electrode plate cannot be efficiently used and the cycle life cannot be improved sufficiently in some cases. The present invention aims to solve the above-mentioned problem by adding sodium ion, potassium ion, magnesium ion, aluminum ion, phosphoric acid, or boric acid to the electrolyte solution in the lead-acid battery.</p> |
