Method for preparing an electrode and use thereof in electrochemical processes
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United States of America Patent
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Jul 3, 1990
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app pub date -
Feb 5, 1988
filing date -
Dec 14, 1984
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Abstract
The present invention concerns a method for preparing electrodes for use in electrochemical processes, said electrodes being constituted by a conductive support whereto an electrocatalytic coating is applied by galvanic deposition from a galvanic plating bath which additionally contains the groups IB, IIB, IIIA, IVA, VA, VB, VIB, VIII Of the periodic table. The electrodes of the invention, obtainable according to the method of the invention, when used as cathodes in membrane or diaphragm chlor-alkali cells, exhibit low hydrogen overvoltages, constant with time, and are substantially immune to poisoning by iron, mercury or other metal impurities present in the alkaline solutions.
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