Anode materials for a hydrogen sulfide solid oxide fuel cell

The performance of a solid oxide fuel cell utilizing hydrogen sulfide as a fuel was studied with CoS1.035, WS2, and Li2S/CoS1.035 anode materials. The electrolyte was yttria-stabilized zirconia with a thickness ranging from 4 0-500 mu m. Power densities of over 400 mW/cm(2) were obtained with the Li/ Co sulfide based material and gas analysis demonstrated hydrogen sulfide de struction levels in excess of 75%. Cell performance was noted to degrade sl ightly over time, which can be attributed to air leaks within the experimen tal system or delamination of the electrodes. (C) 1999 The Electrochemical Society. S0013-4651(98)12-026-6. All nights reserved.