Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Electrode
Reexamination Certificate
2004-07-26
2010-11-09
Yuan, Dah-Wei D (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Electrode
C429S231000, C429S218100
Reexamination Certificate
active
07829221
ABSTRACT:
A nickel-zinc galvanic cell is provided, having a zinc oxide negative electrode, a nickel oxide positive electrode, and an alkaline electrolyte. Chemical additives are placed in each of the negative and positive electrodes. The positive nickel hydroxide electrode contains a mixture of cobalt oxide contained within a nickel oxide matrix in the range of about 1% to 10%, and cobalt metal in the range of about 1% to 10%, by weight. The negative zinc oxide electrode may contain oxides other than the oxide of zinc, which have redox potentials which are negative of −0.73 volts. Also, the metal oxide additives to the negative zinc oxide electrode are such as to inhibit release of soluble cobalt from the nickel oxide negative electrode prior to a formation charge being applied to the electrochemical cell.
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Best Zachary
PowerGenix Systems, Inc.
Weaver Austin Villeneuve & Sampson LLP
Yuan Dah-Wei D
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