摘要
A brief overview of the past and present state of art in the field of H2S solid oxide fuel cell is presented.Electrochemical performance of a proton-conducting solid oxide fuel cell having the configuration of H2S,（MoS2+NiS）/Li2SO4-Al2O3/Pt,air was investigated.The experimental results showed that electrolyte materials like Li2SO4-Al2O3, and anode substances such as MoS2+NiS showed good chemical stability under the operating conditions of a fuel cell using H2S as the fuel, and that binary metal sulfides such as MoS2+NiS as an anode catalyst was superior to a single metal sulfide of MoS2 which sublimes above 450 ℃, and better than Pt which could be detached and resulted in the degradation of anode due to the formation of PtS.The proton-conducting and cell performance was improved at elevated temperatures due to the increase of electrochemical reaction rate and the reduction of cell resistance.OCV values around 1.0 V were observed.The maximum current and power density values obtained at 600 ℃ were 20 mA·cm -2 and 4 mW· cm -2, and as high as 200 mA· cm -2 and 55 mW· cm -2 were achieved at 700 ℃, respectively.Three different anode catalysts, Pt, MoS2+NiS and MoS2+NiS+Ag were described.The conductance of cell increased and the cell performance was improved with Ag powder added to anode catalysts.Current density up to 250 mA· cm -2 and power density up to 70 mW· cm -2 were achieved with the anode catalyst MoS2+NiS+Ag compared to those with MoS2+NiS at 700 ℃.
A brief overview of the past and present state of art in the field of H_2S solid oxide fuel cell is presented.Electrochemical performance of a proton-conducting solid oxide fuel cell having the configuration of H_2S,(MoS_2+NiS)/Li_2SO_4-Al_2O_3/Pt,air was investigated.The experimental results showed that electrolyte materials like Li_2SO_4-Al_2O_3, and anode substances such as MoS_2+NiS showed good chemical stability under the operating conditions of a fuel cell using H_2S as the fuel, and that binary metal sulfides such as MoS_2+NiS as an anode catalyst was superior to a single metal sulfide of MoS_2 which sublimes above 450 ℃, and better than Pt which could be detached and resulted in the degradation of anode due to the formation of PtS.The proton-conducting and cell performance was improved at elevated temperatures due to the increase of electrochemical reaction rate and the reduction of cell resistance.OCV values around 1.0 V were observed.The maximum current and power density values obtained at 600 ℃ were 20 mA·cm -2 and 4 mW· cm -2, and as high as 200 mA· cm -2 and 55 mW· cm -2 were achieved at 700 ℃, respectively.Three different anode catalysts, Pt, MoS_2+NiS and MoS_2+NiS+Ag were described.The conductance of cell increased and the cell performance was improved with Ag powder added to anode catalysts.Current density up to 250 mA· cm -2 and power density up to 70 mW· cm -2 were achieved with the anode catalyst MoS_2+NiS+Ag compared to those with MoS_2+NiS at 700 ℃.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2004年第10期1732-1735,共4页
CIESC Journal
基金
广东省自然科学基金资助项目 (No 3 14 2 4) .~~
