Correlating Sulfur Poisoning of SOFC Nickel Anodes by a Temkin Isotherm

Experimental data on sulfur's impact on solid oxide fuel cell (SOFC) nickel anodes have been analyzed using an isotherm for the sulfur coverage on the Ni surface: , where is the ratio between the partial pressures of hydrogen sulfide and hydrogen. The loss of performance, , of the SOFC can be correlated by , where depends on the current density and anode material. The data range covered is , concentration of hydrogen sulfide .