摘要:
A lead acid battery can be obtained which exhibits excellent life properties while keeping the level of self-discharging and electrolyte loss equal to that of those comprising a Pb—Ca alloy collector. In other words, the present invention lies in a positive collector for lead acid battery comprising a substrate and a surface layer made of an alloy composition different from that of the substrate formed on at least a part of the surface of the substrate, characterized in that the substrate is a Sb-free lead alloy or lead and said surface layer is a lead alloy layer comprising one or more metals selected from the group consisting of alkaline metals and alkaline earth metals.
摘要:
A negative electrode current collector for a lead-acid battery having a grid part, upper frame part, and lug part according to the present invention, where the upper frame part and lug part have a surface layer, a surface layer is an alloy of Pb and Sn and the mass ratio of Sn accounts for 10% or more in the whole alloy, an alloy of Pb and Sb and the mass ratio of Sb accounts for 10% or more in the whole alloy, an alloy of Pb, Sn and Sb and the total mass ratio of Sn and Sb accounts for 10% or more in the whole alloy, Sn, or Sb.Further, a negative electrode current collector for a lead-acid battery having a grid part, upper frame part, and lug part according to the present invention, only upper frame part and lug part have a surface layer.