Method of forming negative plate utilizing barium carbonate...

Details Method of forming negative plate utilizing barium carbonate... Method of forming negative plate utilizing barium carbonate...

H - Electricity

01

M

18/67

H01M 4/20 (2006.01) H01M 4/56 (2006.01)

Patent

CA 1163406

ABSTRACT OF THE DISCLOSURE An improvement in a method for producing a negative lead-acid storage battery plate is disclosed. The improvement involves the production of a paste from sulfuric acid and a lead oxide mixture containing, distributed therethrough, from 0.1 to 1.0 part of at least one barium carbonate per 100 parts of lead therein, calculated as PbO. Preferably the paste contains from 0.1 to 0.4 part of barium carbonate per 100 parts of lead. As a consequence of reaction between the sulfuric acid and the barium carbonate, finely-divided barium sulfate is formed in situ in the paste and carbon dioxide to harden the paste is released. The barium sulfate functions as an expander and the carbon dioxide initiates curing of the paste.

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