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US 7,611,803 B2Granted
Electrochemical cell
AssigneeEveready Battery Company, Inc.
InventorGuanghong Zheng
Life of this patent
Estimating the term…
Abstract
An alkaline electrochemical cell having an anode containing zinc and a cathode that includes a catalyst and an iodate is disclosed. The catalyst catalyzes the reduction of the iodate when the cell is discharged thereby enabling the cell to be used in devices that have a functional endpoint of 1.0V or higher. Preferred catalysts include platinum and palladium. Suitable iodates include copper iodate, strontium iodate and lead iodate.
Claims16
An electrochemical cell, comprising:
- (a) only two electrodes, a first electrode comprising a first electrochemically active material and a second electrode comprising a second electrochemically active material and a catalyst, wherein said second electrochemically active material consists of one or more iodates or a mixture of one or more iodates and another material selected from manganese dioxide and silver oxide, and said catalyst comprises at least one material selected from the group consisting of platinum and palladium;
- (b) a separator disposed between said electrodes;
- and
- (c) an electrolyte providing ionic conductivity between said first and second electrodes.
1 more element
Dependencies are inferred from the claim text.