Use of hydroquinone to precondition manganese dioxide for use in

Details Use of hydroquinone to precondition manganese dioxide for use in Use of hydroquinone to precondition manganese dioxide for use in

1992-07-01

1994-05-17

Langel, Wayne

Metal working

Method of mechanical manufacture

Electrical device making

423605, 429224, H01M 450, H01M 618, C01G 4502

Patent

active

053124570

ABSTRACT:
A method of preconditioning manganese dioxide for use in a rechargeable alkaline electrochemical cell. The method includes the step of contacting unreduced manganese dioxide (e.g., electrolytic manganese dioxide) with a solution of hydroquinone in an environment having a pH greater than or equal to 5 that is essentially free of dissolved oxygen to partially reduce the unreduced manganese dioxide to manganese dioxide generally represented by the formula

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Chemical Abstracts 100(24):197384r (1984).
"Reduction and Dissolution of Manganese(III) and Manganese (IV) Oxides by Organics. 1. Reaction with Hydroquinone," A. T. Stone and J. J. Morgan, Environ. Sci. Technol., vol. 18, No. 6, 1984, pp. 450-456.
Kinetics and Reaction Stoichiometry in the Reductive Dissolution of Manganese (IV) Dioxide and Co (III) Oxide by Hydroquinone, A. Stone & H. Ulrich, Journal of Colloid and Interface Science, vol. 132, No. 2, Oct. 15, 1989.
Patent application (country and Ser. No. unknown) corresponding to U.S. Pat. No. 5,011,752 to Kordesch et al.

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