A New ( W , Mo ) C Electrocatalyst Synthesized by a Carbonyl Process: Activity Enhancement Resulting from Water Vapor Treatment in the Synthesizing Process
- 1 August 1985
- journal article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 132 (8) , 1814-1819
- https://doi.org/10.1149/1.2114223
Abstract
It has been revealed that electrocatalytic activity of tungsten and molybdenum mixed carbides formed on a carbon fiber substrate using a process in which metallic film formed by CVD at 450°C from and is carburized with at 820°C is enhanced by exposure to water vapor (∼20 torr) at its synthesizing stage before the carburization. Activity tests in relation to electro‐oxidation of and conducted in at 50°C show that the potentiostatic current generated by reactants per real surface area of the catalyst thus obtained is 0.27 A‐m−2 (at 0.2V vs. RHE) and 0.0037 A‐m−2 (at 0.5V), respectively. The activity enhancement resulting from water vapor treatment is discussed in the light of surface analyses using Auger electron spectroscopy.Keywords
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