IMPROVED ELECTROCATALYSTS FOR AMMONIA FUEL CELL ANODES

Abstract

It appears that substantial improvements in ammonia fuel cell performance can be achieved by using iridium as the dissociating element. The iridium catalyst can be incorporated directly into the anode structure or used in an external catalytic unit coupled to a hydrogen cell. In the former case, open-circuit voltages of up to 0. 934 v have been achieved at 100 C with an oxygen cathode, a potential which is at least 0. 1 v greater than that obtained with the best platinum anodes under the same conditions.