Abstract: A solid state H2S/air electrochemical cell having the configuration of H2S,
(MoS2+NiS+Ag)/YSZ/Pt,air has been examined with different H2S flow rates and concentrations
at atmospheric pressure and 750-850℃.Performance of the fuel cell was dependent on anode
compartment H2S flow rate and concentration. The cell open-circuit voltage increased with
increasing H2S flow rate. It was found that increasing both H2S flow rate and H2S
concentration improved current-voltage and power density performance. This is resulted from
improved gas diffusion in anode and increased concentration of anodic electroactive
species. Operation at elevated H2S concentration improved the cell performance at a given
gas flow rate. However, as low as 5% H2S in gas mixture can also be utilized as fuel feed
to cells. Highest current and power densities, 1750mA·cm^-2 and 200mW·cm^-2,are obtained
with pure H2S flow rate of 50 ml·min^-1 and air flow rate of 100ml·min^-1 at 850℃.

Key words: fuel cell performance, H₂S/air fuel cell, solid oxide fuel cell (SOFC)

摘要： A solid state H2S/air electrochemical cell having the configuration of H2S,
(MoS2+NiS+Ag)/YSZ/Pt,air has been examined with different H2S flow rates and concentrations
at atmospheric pressure and 750-850℃.Performance of the fuel cell was dependent on anode
compartment H2S flow rate and concentration. The cell open-circuit voltage increased with
increasing H2S flow rate. It was found that increasing both H2S flow rate and H2S
concentration improved current-voltage and power density performance. This is resulted from
improved gas diffusion in anode and increased concentration of anodic electroactive
species. Operation at elevated H2S concentration improved the cell performance at a given
gas flow rate. However, as low as 5% H2S in gas mixture can also be utilized as fuel feed
to cells. Highest current and power densities, 1750mA·cm^-2 and 200mW·cm^-2,are obtained
with pure H2S flow rate of 50 ml·min^-1 and air flow rate of 100ml·min^-1 at 850℃.

关键词: H₂S;流动速度;浓度;固体氧化物;燃料电池