COMPOSITE CAPACITOR NEGATIVE ELECTRODE PLATE FOR LEAD ACID STORAGE BATTERY, AND LEAD ACID STORAGE BATTERY

摘要

Disclosed is a composite capacitor negative electrode plate for a lead acid storage battery, which suppresses decrease in the hydrogen gas generation potential and improves rapid discharge cycle characteristics under PSOC conditions. Specifically disclosed is a composite capacitor negative electrode plate for a lead acid storage battery, which is obtained by forming a coating layer of a carbon mixture on the surface of a plate that is filled with a negative electrode active material, said carbon mixture being obtained by mixing at least a binder to a carbon material for assuring electric conductivity and activated carbon for assuring capacitor capacitance and/or pseudocapacitor capacitance. In the composite capacitor negative electrode plate for a lead acid storage battery, activated carbon modified with a functional group, preferably activated carbon modified with an acidic surface functional group is used.