Accession Number : AD0733941

Title :   Electrocatalysis of Oxygen Reduction by the Tungsten Bronzes.

Descriptive Note : Semi-annual rept. no. 7, 1 Sep 70-30 Apr 71,

Corporate Author : PENNSYLVANIA UNIV PHILADELPHIA ELECTROCHEMISTRY LAB

Personal Author(s) : McHardy,J. ; Bockris,J. O'M.

Report Date : MAY 1971

Pagination or Media Count : 23

Abstract : Capacitances measured on tungsten bronze electrodes have provided new information about the electronic properties of the semiconducting surface layer. Both the donor concentration and the flat bond potential are altered by platinum doping. Further evidence has emerged from the work to support the view that the bronze surface undergoes a reversible change in the vicinity of 1.1.3 volts vs. RHE, which may involve the incorporation of oxygen atoms at the more anodic potentials, and their reduction to water at the more cathodic potentials. (Author)

Descriptors :   (*ELECTRODES, TUNGSTEN COMPOUNDS), (*SEMICONDUCTORS, ELECTRODES), SURFACES, OXIDES, ELECTROCHEMISTRY, CAPACITANCE, SODIUM COMPOUNDS, CATALYSTS

Subject Categories : Physical Chemistry
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE