Anodes for Hydrocarbon-fueled Solid Oxide Fuel Cells
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- 英文论文题名：Anodes for Hydrocarbon-fueled Solid Oxide Fuel Cells
- 论文作者：孙春文 ; Qi Yang ; Zhaohui Ma ; Liquan Chen
- 英文论文作者：Chunwen Sun ; Qi Yang ; Zhaohui Ma ; Liquan Chen ; Beijing National Laboratory for Condensed Matter Physics ; Institute of Physics ; Chinese Academy of Sciences ; Beijing Institute of Nanoenergy and Nanosystems ; Chinese Academy of Sciences ; National Center for Nanoscience and Technology (NCNST)
- 年：2016
- 作者机构：中国科学院北京纳米能源与系统研究所;中国科学院北京纳米能源与系统研究所储能材料与器件实验室课题组;Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences;
- 会议召开时间：2016-10-28
- 会议录名称：2016淮海绿色功能材料论坛暨第三届徐州清洁能源材料论坛摘要集
- 语种：英文
- 分类号：TM911.4
- 学会代码：ZGHY
- 会议名称：2016淮海绿色功能材料论坛暨第三届徐州清洁能源材料论坛
- 会议地点：中国江苏徐州
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：2
- 文件大小：373k
- 原文格式：D
- 会议级别：全国
摘要
Solid oxide fuel cells(SOFCs) have the potential to direct use hydrocarbon fuels without pretreatment due to high operating temperature(500-1000 °C) [1]. The most common used nickel/yttria-stabilized zirconia(Ni/YSZ) anodes have showed excellent performance in H_2 fuel, however, there is serious carbon deposition when hydrocarbon fuels are used. Modification of the Ni-based anode with other metals, e.g., copper, to form alloys is another possible choice to alleviate the carbon deposition issue. In this work, we have fabricated Sn modified Ni/SDC cermet anode cell by infiltrating SnCl_2 solution of ethyl alcohol into the porous Ni cermet anode and evaluated its potential application as an anode for SOFCs operating with methane. The HAADF STEM image of the tested cell shows that the incorporation of a small amount of Sn into the surface of Ni cermet facilitates the formation of highly active Sn-Ni intermetallics, and offers exceptional long-term stability without coking on operating with a humidified methane fuel. We also find that the infiltrated SnCl_2 has to be oxidized to SnO_2 at above 800 oC in air for 1hour for the purpose of being reduced to metallic Sn. Then the metallic Sn reacts with Ni to form highly active Sn-Ni intermetallics in H_2.
Solid oxide fuel cells(SOFCs) have the potential to direct use hydrocarbon fuels without pretreatment due to high operating temperature(500-1000 °C) [1]. The most common used nickel/yttria-stabilized zirconia(Ni/YSZ) anodes have showed excellent performance in H_2 fuel, however, there is serious carbon deposition when hydrocarbon fuels are used. Modification of the Ni-based anode with other metals, e.g., copper, to form alloys is another possible choice to alleviate the carbon deposition issue. In this work, we have fabricated Sn modified Ni/SDC cermet anode cell by infiltrating SnCl_2 solution of ethyl alcohol into the porous Ni cermet anode and evaluated its potential application as an anode for SOFCs operating with methane. The HAADF STEM image of the tested cell shows that the incorporation of a small amount of Sn into the surface of Ni cermet facilitates the formation of highly active Sn-Ni intermetallics, and offers exceptional long-term stability without coking on operating with a humidified methane fuel. We also find that the infiltrated SnCl_2 has to be oxidized to SnO_2 at above 800 oC in air for 1hour for the purpose of being reduced to metallic Sn. Then the metallic Sn reacts with Ni to form highly active Sn-Ni intermetallics in H_2.
Solid oxide fuel cells(SOFCs) have the potential to direct use hydrocarbon fuels without pretreatment due to high operating temperature(500-1000 °C) [1]. The most common used nickel/yttria-stabilized zirconia(Ni/YSZ) anodes have showed excellent performance in H_2 fuel, however, there is serious carbon deposition when hydrocarbon fuels are used. Modification of the Ni-based anode with other metals, e.g., copper, to form alloys is another possible choice to alleviate the carbon deposition issue. In this work, we have fabricated Sn modified Ni/SDC cermet anode cell by infiltrating SnCl_2 solution of ethyl alcohol into the porous Ni cermet anode and evaluated its potential application as an anode for SOFCs operating with methane. The HAADF STEM image of the tested cell shows that the incorporation of a small amount of Sn into the surface of Ni cermet facilitates the formation of highly active Sn-Ni intermetallics, and offers exceptional long-term stability without coking on operating with a humidified methane fuel. We also find that the infiltrated SnCl_2 has to be oxidized to SnO_2 at above 800 oC in air for 1hour for the purpose of being reduced to metallic Sn. Then the metallic Sn reacts with Ni to form highly active Sn-Ni intermetallics in H_2.
引文
[1]C.W.Sun,U.Stimming,Recent anode advances in solid oxide fuel cells,Journal of Power Sources,171,247-260(2007).