直接甲烷燃料的SOFC复合阳极制备及研究
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摘要
积碳是限制直接碳氢燃料电池阳极发展的瓶颈问题。本文采用浸渍法,在固体氧化物燃料电池Ni/YSZ阳极上制备纳米Ru层。采用扫描电子显微镜(SEM)和能谱(EDS)对阳极成分和结构进行表征发现:显微结构良好的Ru催化层和纳米级Ru颗粒均匀的分散于Ni-YSZ阳极内部。以甲烷为燃料,单电池在750℃的温度下,浸渍了0.67 mol%Ru的Ru-Ni-YSZ||YSZ||Ag单电池获得最大功率密度可达374 mW/cm~2。电池恒电流200 mA/cm~2条件下进行运行,电压维持在0.85 V连续运行20 h没有发生降低。相较于未浸渍的单电池,添加了Ru层的电池的电性能及抗积碳性能获得明显提高。
A Ru nano catalyst layer on the Ni/YSZ anode-supported solid oxide fuel cell is got with impregnation method. The influences of Ru on the electrical properties of single cell are studied by SEM, EDS and Electrochemical workstation. The research result reveals that, a nano functional layer of Ru catalytic is got on Ni/YSZ anode by chemical immersion method. Ru nano particles are uniformly dispersed on the surface of Ni/YSZ anode materials. The electrical performance of Ru-Ni/YSZ || YSZ || Ag single cell was 374 mW/cm~2 with impregnated 0.67 wt% Ru in direct methane fuel at 750℃. Through 20 hours of running, the electro catalytic activity and anti-carbon deposition of cell improved obviously.
A Ru nano catalyst layer on the Ni/YSZ anode-supported solid oxide fuel cell is got with impregnation method. The influences of Ru on the electrical properties of single cell are studied by SEM, EDS and Electrochemical workstation. The research result reveals that, a nano functional layer of Ru catalytic is got on Ni/YSZ anode by chemical immersion method. Ru nano particles are uniformly dispersed on the surface of Ni/YSZ anode materials. The electrical performance of Ru-Ni/YSZ || YSZ || Ag single cell was 374 mW/cm~2 with impregnated 0.67 wt% Ru in direct methane fuel at 750℃. Through 20 hours of running, the electro catalytic activity and anti-carbon deposition of cell improved obviously.
引文
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[4]Singhal SC.Science and technology of solid-oxide fuel cells.MRS Bull 2000;25(3):16-21.
[5]Li W,Lv Z,Zhu X,et al.Effect of adding urea on performance of Cu/Ce O2/YSZ anodes for solid oxide fuel cells prepared by impregnation method[J].Electrochimica Acta,2011,56(5):2230-2236.
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[7]Steele B,Heinzel A.Materials for fuel-cell technologies.Nature.2001,(414):345-352.
[8]Laosiripojana N,Assabumrungrat S.Catalytic steam reforming of methane,methanol,and ethanol over Ni/YSZ:the possible use of these fuels in internal reforming SOFC.Journal of Power Sources.2007,(163):943-951.
[9]刘江.直接碳氢化合物固体氧化物燃料电池化学进展.2006,(18):1026-1033.
[10]Jiang S,Chan S.A review of anode materials development in solid oxide fuel cells.Journal of Materials Science.2004,(39):4405-4439.
[11]Gorte RJ,Vohs JM,Novel SOFC Anodes for the Direct Electrochemical Oxidation of Hydrocarbons.Journal of Catalysis,2003.106(1-2):10-15.
[12]孙良良,et al.,Pd修饰Ni-YSZ多维阳极在直接甲烷SOFC的抗积碳研究.人工晶体学报,2016.45(4):913-917.
[2]韩敏芳,彭苏萍.固体氧化物燃料电池材料及制备[M].北京:科学出版社,2004:1-15.
[3]詹姆斯·拉米尼,安德鲁·迪克斯.燃料电池系统[M].北京:科学出版社,2006:156-158.
[4]Singhal SC.Science and technology of solid-oxide fuel cells.MRS Bull 2000;25(3):16-21.
[5]Li W,Lv Z,Zhu X,et al.Effect of adding urea on performance of Cu/Ce O2/YSZ anodes for solid oxide fuel cells prepared by impregnation method[J].Electrochimica Acta,2011,56(5):2230-2236.
[6]Xia C,Xia F,Liu M,Reduced-Temperature Solid Oxide Fuel Cells(SOFCs)Fabricated by Screen-Printing.Electrochemical and Solid-State Letters,2001.4(5):A52-A54.
[7]Steele B,Heinzel A.Materials for fuel-cell technologies.Nature.2001,(414):345-352.
[8]Laosiripojana N,Assabumrungrat S.Catalytic steam reforming of methane,methanol,and ethanol over Ni/YSZ:the possible use of these fuels in internal reforming SOFC.Journal of Power Sources.2007,(163):943-951.
[9]刘江.直接碳氢化合物固体氧化物燃料电池化学进展.2006,(18):1026-1033.
[10]Jiang S,Chan S.A review of anode materials development in solid oxide fuel cells.Journal of Materials Science.2004,(39):4405-4439.
[11]Gorte RJ,Vohs JM,Novel SOFC Anodes for the Direct Electrochemical Oxidation of Hydrocarbons.Journal of Catalysis,2003.106(1-2):10-15.
[12]孙良良,et al.,Pd修饰Ni-YSZ多维阳极在直接甲烷SOFC的抗积碳研究.人工晶体学报,2016.45(4):913-917.