Anode for electrochemical processes

An anode suitable for use in electrochemical process and comprising an electrode base plate made of a metal which can be passivated electrochemically, a protective layer of the nitride of the metal of the electrode base plate applied thereto, and a layer containing manganese dioxide as electrochemically active material and overlying the protective layer, said last-mentioned layer having been produced by applying over the protective nitride layer of the electrode base plate a thermally decomposable manganese salt and decomposing said salt to form manganese dioxide by rapidly bringing the salt, after its application over the protective nitride layer, to its decomposition temperature in a period of less than 60 seconds.