Abstract: An improved electrochemical gas electrode and improved electrochemical fuel, gas detection and gas separation cells employing same as an anode therein, said improved electrode comprising a cohesive, gas-permeable conductive mass having a thin, gas-permeable hydrophobic film bonded to its gas-contacting surface, the conductive mass consisting essentially of 8-75 weight % of silicon and 25-92 weight % of one or more metals selected from vanadium, chromium, molybdenum, tungsten, manganese, iron, cobalt and nickel, said conductive mass optionally containing as a non-essential component up to 75 weight % of a conductive additive, based upon the combined weights of additive, silicon and metal, for example, carbon black or graphite.