METHOD FOR PRODUCING NEGATIVE PLATE FOR USE IN LEAD-ACID BATTERY AND LEAD-ACID BATTERY

摘要

A process for producing a negative plate for lead storage batteries which is prevented from suffering interfacial separation between a plate filled with a negative active material and a carbon-mix coating layer formed on the surface of the plate, the interfacial separation being a problem of negative plates having a configuration comprising the plate filled with a negative active material and the carbon-mix coating layer, and which has improved low-temperature rapid discharge characteristics. The process comprises: forming a coating layer of a carbon mix on at least some of the surfaces of a plate filled with a negative active material, the carbon mix being obtained by mixing two carbon materials consisting of a first carbon material having conductivity and a second carbon material having a capacitance and/or a pseudocapacitance with at least a binder; subsequently subjecting the coated plate to a step in which lead ions are generated in an amount sufficient to let the lead ions move from the plate filled with a negative active material to the inside of the carbon-mix coating layer; and then conducting chemical conversion or first charge to connect and unite at least some of the interface between the carbon-mix coating layer and the negative plate by means of precipitated lead.