Alkaline manganese dioxide cell
AssigneeEveready Battery Company, Inc.
InventorLewis F. Urry
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Abstract
A hermetically sealed alkaline cell having an anode such as a zinc anode, an aqueous alkaline electrolyte solution and a manganese dioxide cathode in which the cathode is composed of a mixture of a minor amount of highly porous manganese dioxide and a major amount of low porosity manganese dioxide and wherein said mixture provides ion diffusion paths through the cathode.
Claims20
A hermetically sealed alkaline electrochemical cell comprising an anode active material, an aqueous alkaline electrolyte solution, a manganese dioxide cathode and a separator disposed between the anode and cathode and whereby the cathode comprises a mixture of highly porous manganese dioxide having a porosity of between 22% and 70%, with low porosity manganese dioxide, having a porosity of less than 22% and wherein the weight percent of the highly porous manganese dioxide is between 1 weight percent to 35 weight percent of the weight of the low porosity manganese dioxide.
Dependencies are inferred from the claim text.