Accession Number : AD0758179

Title :   Low Cost Oxygen Electrodes.

Descriptive Note : Interim rept. no. 2, 11 May 71-30 Jul 72,

Corporate Author : UNION CARBIDE CORP CLEVELAND OHIO CONSUMER PRODUCTS DIV

Personal Author(s) : Kordesch,K. V. ; Scarr,R. F.

Report Date : JUL 1972

Pagination or Media Count : 95

Abstract : The purpose of the contract is the development of a low cost air electrode for medium temperature (130C) immobilized phosphoric acid (matrix) fuel cell. Thin carbon electrode structures were to be fabricated and catalyzed with the minimum amount of platinum which produced a H2-air cell performance of 0.6 volt cell terminal voltage (0.65 volt versus H2 reference) at 80 mA/sq cm, after 500 hours operation. By using special techniques of electrode manufacturing and catalyst application, a reduction of the Pt amount to a level of 1 to 2 mg Pt/sq cm was accomplished. Long-term testing of these electrodes has shown that the chemical and mechanical stability of the catalyst and structural material are good. X-ray fluorescence was used to determine the distribution and the amount of catalyst actually deposited. (Author Modified Abstract)

Descriptors :   (*OXYGEN, *ELECTRODES), (*FUEL CELLS, ELECTRODES), PRODUCTION, AIR, PLATINUM, CATALYSTS, RELIABILITY(ELECTRONICS), DEPOSITION, CARBON, COSTS, HALOCARBON PLASTICS, PLASTIC COATINGS, MANUFACTURING

Subject Categories : Electrical and Electronic Equipment
      Electric Power Production and Distribution

Distribution Statement : APPROVED FOR PUBLIC RELEASE