POSITIVE ELECTRODE COLLECTOR FOR LEAD ACID BATTERY AND LEAD ACID BATTERY USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a lead acid battery having self-discharging and electrolyte reducing characteristic equal to a case using a Pb-Ca alloy collector for a positive electrode and improved life performance. SOLUTION: This positive electrode collector for the lead acid battery comprises a surface layer provided on part of the surface of a lead alloy or lead base material containing no Sb, the surface layer being a tin alloy layer containing one or more metal selected from alkaline metals and alkaline earth metals. The alkaline metal and/or the alkaline earth metal in the surface layer is 0.1-10 wt.%. The thickness of the surface layer is 1μm or more an the thickness of the base material is 10% or less.