Recoating of electrodes
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United States of America Patent
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-
May 1, 1984
Grant Date -
N/A
app pub date -
Mar 8, 1982
filing date -
Apr 6, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Used dimensionally stable electrodes having a valve-metal base and an originally conductive and electrocatalytic coating of e.g. ruthenium-titanium oxide are cleaned and activated by impregnation with a relatively dilute solution preferably containing only a decomposable platinum-group metal compound, followed by heating to enrich the old coating with platinum-group metal/oxide. A new outer electrocatalytic coating which is the same as or similar to the old coating is then applied on top.
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