Method for reducing gas pressure in an electrochemical cell

Details Method for reducing gas pressure in an electrochemical cell Method for reducing gas pressure in an electrochemical cell

H - Electricity

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M

319/45

H01M 6/14 (2006.01) H01M 6/50 (2006.01)

Patent

CA 1165811

22,748 METHOD FOR REDUCING GAS PRESSURE IN AN ELECTROCHEMICAL CELL Abstract of the Disclosure A method for treating carbon-containing cathodes of a primary electrochemical cell for the purpose of reduc- ing the gas pressure in the cell during open circuit and during discharge of the cell. The method of the invention includes purging the carbon-containing cathodes of the cell with sulfur dioxide or thionyl chloride gas to dis- place water and insoluble gases (oxygen and nitrogen, and argon or helium) entrapped within the carbon of the car- bon-containing cathodes. The purge gas is soluble in an electrolytic solution including liquid thionyl chloride as is employed to activate the cell for use in discharge.

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