Cathode materials for primary batteries
AssigneeEveready Battery Company, Inc.
InventorsFrank H. Feddrix, Robert M. Estanek, Scott W. Donne
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Abstract
The cathode of a primary alkaline battery is composed of electrode grade manganese dioxide containing Zr.
Claims30
A composition of matter corresponding to the formula Mn1−xZrxOy in which x is about 0.0037 to 0.0144, and y ranges from about 1.90 to 2.00, in which the manganese, zirconium and oxygen are intermingled atomically.
A composition of matter comprising zirconium, manganese and oxygen, having a Zr/Mn mole ratio in the range of 0.0037 to 0.0145, and wherein the average manganese oxidation state is in the range of +3.80 to +4.00.
Electrode grade zirconium manganese oxide having a predominantly fibrous morphology.
An electrode for an alkaline battery, comprising zirconium manganese oxide and a conductive material, wherein the electrode exhibits an initial discharge capacity of 970 C/g or more when measured at a constant current discharge of 10 mA/g.
A method of making electrode grade zirconium manganese oxide in a bath containing an anode and cathode electrode, comprising the steps of:
- Adding a solution of soluble manganese and zirconium in the bath;
- Plating zirconium manganese oxide onto the anode.
Dependencies are inferred from the claim text.