Method of coating electrode with ruthenium and valve metal...

Details Method of coating electrode with ruthenium and valve metal... Method of coating electrode with ruthenium and valve metal...

C - Chemistry, Metallurgy

25

B

204/195.2

C25B 11/10 (2006.01) C25B 11/04 (2006.01)

Patent

CA 1098865

ABSTRACT OF THE DISCLOSURE A method to produce an electrode by coating at least a portion of a valve metal substrate sequentially with first and second liquid solutions containing different proportions of dissolved ruthenium and valve metal values; the second solution having a greater valve metal to ruthe- nium weight ratio than the first solution. The substrate is contacted with the first liquid solution and then heated to oxidize the deposited ruthenium and valve metal values. Thereafter at least the oxidized surface is contacted with the second solution and heated to oxidize the deposited metal values. 18,326-F

301092

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