Evaluation studies on carbon supported catalysts for oxygen reduction in alkaline mediumThis paper describes tests designed to predict the performance of fuel cell electrodes, as applied to an alkaline oxygen-fuel cell having specially fabricated porous-carbon electrodes with various amounts of dispersed platinum or gold as active catalysts. The tests are based on information obtained from the techniques of cyclic voltammetry and polarization. The parameters obtained from cyclic voltammetry were of limited use in predicting fuel cell performance of the cathode. On the other hand, half-cell polarization measurements offered close simulation of the oxygen electrode, although a predictor of the electrode life is still lacking. The very low polarization of the Au-10 percent Pt catalytic electrode suggests that single-phase catalysts should be considered.
Document ID
19880029416
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Srinivasan, Vakula S. (Bowling Green State University OH, United States)
Singer, Joseph (NASA Lewis Research Center Cleveland, OH, United States)