Electrodes for electrochemical processes

In an electrode for electrochemical processes having an electrically conductive and relatively inert support at least the surface layer of which is of titanium or a titanium alloy, and an at least partial coating for said support, said coating being a protective and electrocatalytic layer obtained by heating on said support, in an oxidizing atmosphere at a temperature between 350.degree. and 800.degree. C., a coating composition consisting essentially of at least one thermally decomposable compound of iridium in a liquid vehicle, said iridium compound decomposing during the heating of the coating composition to provide said iridium in a metallic and/or oxide state, and at least one thermally decomposable compound of lithium, in an atomic ratio iridium/lithium of 1/4 to 8/1, said thermally decomposable compound of lithium decomposing during the heating of the coating composition to an oxide of lithium.

In an electrode for electrochemical processes having an electrically conductive and relatively inert support at least the surface layer of which is of titanium or a titanium alloy, and an at least partial coating for said support, said coating being a protective and electrocatalytic layer obtained by heating on said support, in an oxidizing atmosphere at a temperature between 350.degree. and 800.degree. C., a coating composition consisting essentially of at least one thermally decomposable compound of iridium in a liquid vehicle, said iridium compound decomposing during the heating of the coating composition to provide said iridium in a metallic and/or oxide state, and at least one thermally decomposable compound of a non noble element selected from the group consisting of lithium and boron, in an atomic ratio iridium/non noble element of 1/4 to 8/1, said thermally decomposable compound of the non noble element decomposing during the heating of the coating composition to an oxide of the non noble element.

In an electrode for electrochemical processes having an electrically conductive and relatively inert support at least the surface layer of which is of titanium or a titanium alloy, and an at least partial coating for said support, said coating being a protective and electrocatalytic layer obtained by heating on said support, in an oxidizing atmosphere at a temperature between 350.degree. and 800.degree. C., a coating composition consisting essentially of at least one thermally decomposable compound of iridium in a liquid vehicle, said iridium compound decomposing during the heating of the coating composition to provide said iridium in a metallic and/or oxide state, and at least one thermally decomposable compound of beryllium, in an atomic ratio iridium/beryllium of 1/4 to 8/1, said thermally decomposable compound of beryllium decomposing during the heating of the coating composition to an oxide of beryllium.

In an electrode for electrochemical processes having an electrically conductive and relatively inert support at least the surface layer of which is of titanium or a titanium alloy, and an at least partial coating for said support, said coating being a protective and electrocatalytic layer obtained by heating on said support, in an oxidizing atmosphere at a temperature between 350.degree. and 800.degree. C., a coating composition consisting essentially of at least one thermally decomposable compound of iridium in a liquid vehicle, said iridium compound decomposing during the heating of the coating composition to provide said iridium in a metallic and/or oxide state, and at least one thermally decomposable compound of gallium, in an atomic ratio iridium/gallium of 1/4 to 8/1, said thermally decomposable compound of gallium decomposing during the heating of the coating composition to an oxide of gallium.