| 摘要 |
PROBLEM TO BE SOLVED: To provide a lead storage battery in which an early capacity drop, which occurs due to a deep charge/discharge cycle in a cathode plate using a lead-calcium alloy lattice not containing antimony, is improved. SOLUTION: In the lead storage battery using a cathode plate made of a lead alloy rolled sheet not containing antimony which undergoes an expanding process, there is provided, on a surface of the lead alloy rolled sheet, a rolled layer made by rolling lead alloy powders containing oxygen. COPYRIGHT: (C)2009,JPO&INPIT |
