CIESC Journal

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An Intermediate-temperature H2S Fuel Cell with a Li2SO4-based Proton-conducting Membrane

ZHONGLi(钟理),QIMing(齐明),WEIGuolin(韦国林),LUOJingli(罗京莉)andK.Chuangb   

  1. College of Chemical Engineering, South China University of Technology, Guangzhou 510640, China
    Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB Canada, T6G 2G6
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2006-02-28 发布日期:2006-02-28
  • 通讯作者: ZHONG Li(钟理)

An Intermediate-temperature H2S Fuel Cell with a Li2SO4-based Proton-conducting Membrane

  • Received:1900-01-01 Revised:1900-01-01 Online:2006-02-28 Published:2006-02-28

摘要: A laboratory-scale intermediate-temperature H2S fuel cell with a configuration of H2S, (metal sulfide-based composite anode)/Li2SO4+Al2O3/(NiO-based composite cathode), air was developed and studied for production of power and for desulfurization of a fuel gas process stream. The cell was run at typical temperature (600—650℃) and ambient pressure, but its electrochemical performance may be limited by electrolyte membrane thickness. The membrane and its performance in cell have been characterized using scanning electron microscope (SEM) and electrochemical impedance spectrum (EIS) techniques. Composite anodes based on metal sulfides, Ag powder and electrolyte behaved well and stably in H2S stream, and composite cathodes based mainly on nickel oxide, Ag powder and electrolyte had superior per-formance to Pt catalyst. The maximum power density of up to 70mW?cm-2 and current density of as high as 250mA?cm-2 were obtained at 650℃. However, the long-term cell stability remains to be investigated.

关键词: fuel cell;lithium sulfate;hydrogen sulfide;anode catalyst;cathode catalyst

Key words: fuel cell, lithium sulfate, hydrogen sulfide, anode catalyst, cathode catalyst