Accession Number : AD0286959

Title :   RATE LIMITING STEPS ON FUEL CELL ELECTRODES

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE ENERGY CONVERSION AND SEMICONDUCTOR LAB

Personal Author(s) : RETI, ADRIAN R.

Report Date : JUN 1962

Pagination or Media Count : 1

Abstract : The tep or steps that limit fuel cell electrode performance were studied. The electrodes considered were the typical porous, gaseous diffusion type, and most of the effort was directed towards acquiring a more quantitative understanding of the effect of the different variables governing electrode performance. An experimental program directed towards obtaining the necessary kinetic data for systems of interest was undertaken, and an experimental system was devised by means of which the electrochemical kinetics could be studied over a wide current density range in epend ntly of mass transfer effects on electrodes of known catalyst area. In the operating region where the effect of mass transfer became significant, it was possible quantitatively to assess its importance. For all the systems studied (O2 and H2O2 electroreduction, H2 and ethylene oxidation), for a particular catalyst-electrolyte system, the electrode performance could be described as a function of reactant concentration and current d nsity only. (Author)

Descriptors :   *ELECTROLYTIC CELLS, *FUEL CELLS, *POWER SUPPLIES, CATALYSTS, DENSITY, DIFFUSION, ELECTRIC CURRENTS, ELECTRIC DISCHARGES, ELECTROCHEMISTRY, ELECTRODES, ETHYLENES, HYDROGEN COMPOUNDS, OXIDATION REDUCTION REACTIONS, OXYGEN, PEROXIDES, PLATINUM, REACTION KINETICS, SILVER, SULFIMIDES.

Distribution Statement : APPROVED FOR PUBLIC RELEASE