Non-Noble Catalysts and Catalyst Supports for Phosphoric-Acid Fuel Cells. 2ND Quarterly Report, December 1980-February 1981

摘要

Tungsten carbide, which is known to be active for hydrogen oxidation and CO tolerant has a hexagonal structure. Titanium carbide is inactive and has a cubic structure. Four different samples of the cubic alloys W/sub x-1/Ti/sub x/C/sub 1-y/ were prepared and found to be active and CO tolerant. When the activities of these cubic alloys are weighted by the reciprocal of the square of the W exchange, they display magnitudes and dependence on bulk C deficiency comparable to those of highly active forms of WC. They may, therefore, offer important insight into the nature of the active sites on, and means for improving the performance of, W-C anode catalysts for use in phosphoric acid fuel cells. (ERA citation 81:025668)