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Evaluation parameters for the alkaline fuel cell oxygen electrodeStudies were made of Pt- and Au-catalyzed porous electrodes, designed for the cathode of the alkaline H2/O2 fuel cell, employing cyclic voltammetry and the floating half-cell method. The purpose was to obtain parameters from the cyclic voltammograms which could predict performance in the fuel cell. It was found that a satisfactory relationship between these two types of measurement could not be established; however, useful observations were made of relative performance of several types of carbon used as supports for noble metal catalysts and of some Au catalysts. The best half-cell performance with H2/O2 in a 35 percent KOH electrolyte at 80 C was given by unsupported fine particle Au on Teflon; this electrode is used in the Orbiter fuel cell.
Document ID
19860002801
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Singer, J. (NASA Lewis Research Center Cleveland, OH, United States)
Srinivasan, V. (Bowling Green State Univ. Ohio, United States)
Date Acquired
September 5, 2013
Publication Date
November 1, 1985
Subject Category
Inorganic And Physical Chemistry
Report/Patent Number
NAS 1.15:87155
E-2669
NASA-TM-87155
Report Number: NAS 1.15:87155
Report Number: E-2669
Report Number: NASA-TM-87155
Accession Number
86N12268
Funding Number(s)
PROJECT: RTOP 506-41-21
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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