Low mercury or mercury free alkaline manganese dioxide-zinc...

Details Low mercury or mercury free alkaline manganese dioxide-zinc... Low mercury or mercury free alkaline manganese dioxide-zinc...

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H01M 6/06 (2006.01) H01M 4/06 (2006.01) H01M 4/62 (2006.01) H01M 4/66 (2006.01) H01M 6/08 (2006.01) H01M 6/22 (2006.01) H01M 10/26 (2006.01) H01M 10/34 (2006.01) H01M 10/52 (2006.01) H01M 4/02 (2006.01)

Patent

CA 2126071

2126071 9312553 PCTABS00023 Low mercury or mercury free primary or secondary alkaline manganese dioxide-zinc cell that comprises a manganese dioxide cathode with a manganese dioxide active material and a conductive powder. The active material and powder are uniformly mixed and pressed to form a porous cathode body. The cell further comprises a gelled zinc anode, a separator between the cathode and the anode, and an alkaline electrolyte. The anode gel comprises a modified starch as a gelling agent capable of releasing hydrogen gases developed during slow corrosion of zinc in the anode. A hydrogen recombination system can be used in the cell to limit inside pressure within permitted limits by recombining the evolved hydrogen.

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