催化学报

催化学报 ›› 2015, Vol. 36 ›› Issue (4): 509-516.DOI: 10.1016/S1872-2067(14)60262-X

• 燃料电池电催化专栏 • 上一篇    下一篇

Carbon to electricity in a solid oxide fuel cell combined with an internal catalytic gasification process

M. Konsolakisa, G. E. Marnellosb,c, A. Al-Musad, N. Kaklidisb, I. Garagounisc,e, V. Kyriakouc,e   

  1. a School of Production Engineering and Management, Technical University of Crete, GR-73100, Chania, Crete, Greece;
    b Department of Mechanical Engineering, University of Western Macedonia, GR-50100 Kozani, Greece;
    c Chemical Process & Energy Resources Institute, CERTH, GR-57001 Thermi, Thessaloniki, Greece;
    d National Center for Combustion and Plasma Technologies, Water and Energy Research Institute, King Abdulaziz City for Science and Technology (KACST), P.O. Box 6086, 11442, Riyadh, Saudi Arabia;
    e Department of Chemical Engineering, Aristotle University of Thessaloniki, GR-54124, Thessaloniki, Greece
  • 收稿日期:2014-10-12 修回日期:2014-12-08 出版日期:2015-03-23 发布日期:2015-03-23
  • 通讯作者: M. Konsolakis

Carbon to electricity in a solid oxide fuel cell combined with an internal catalytic gasification process

M. Konsolakisa, G. E. Marnellosb,c, A. Al-Musad, N. Kaklidisb, I. Garagounisc,e, V. Kyriakouc,e   

  1. a School of Production Engineering and Management, Technical University of Crete, GR-73100, Chania, Crete, Greece;
    b Department of Mechanical Engineering, University of Western Macedonia, GR-50100 Kozani, Greece;
    c Chemical Process & Energy Resources Institute, CERTH, GR-57001 Thermi, Thessaloniki, Greece;
    d National Center for Combustion and Plasma Technologies, Water and Energy Research Institute, King Abdulaziz City for Science and Technology (KACST), P.O. Box 6086, 11442, Riyadh, Saudi Arabia;
    e Department of Chemical Engineering, Aristotle University of Thessaloniki, GR-54124, Thessaloniki, Greece
  • Received:2014-10-12 Revised:2014-12-08 Online:2015-03-23 Published:2015-03-23

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摘要：

This study explores strategies to develop highly efficient direct carbon fuel cells (DCFCs) by combining a solid-oxide fuel cell (SOFC) with a catalyst-aided carbon-gasification process. This system employs Cu/CeO2 composites as both anodic electrodes and carbon additives in a cell of the type: carbon|Cu-CeO2/YSZ/Ag|air. The study investigates the impact on in situ carbon-gasification and DCFC performance characteristics of catalyst addition and variation in the carrier gas used (inert He versus reactive CO2). The results indicate that cell performance is significantly improved by infusing the catalyst into the carbon feedstock and by employing CO2 as the carrier gas. At 800 ℃, the maximum power output is enhanced by approximately 40% and 230% for carbon/CO2 and carbon/catalyst/CO2 systems, respectively, compared with that of the carbon/He configuration. The increase observed when employing the catalyst and CO2 as the carrier gas can be primarily attributed to the pronounced effect of the catalyst on carbon-gasification through the reverse-Boudouard reaction, and the subsequent in situ electro-oxidation of CO at the anode three-phase boundary.

关键词: Direct carbon fuel cell, Internal catalytic gasification, Copper/ceria anode, Copper/ceria catalyst

Abstract:

This study explores strategies to develop highly efficient direct carbon fuel cells (DCFCs) by combining a solid-oxide fuel cell (SOFC) with a catalyst-aided carbon-gasification process. This system employs Cu/CeO2 composites as both anodic electrodes and carbon additives in a cell of the type: carbon|Cu-CeO2/YSZ/Ag|air. The study investigates the impact on in situ carbon-gasification and DCFC performance characteristics of catalyst addition and variation in the carrier gas used (inert He versus reactive CO2). The results indicate that cell performance is significantly improved by infusing the catalyst into the carbon feedstock and by employing CO2 as the carrier gas. At 800 ℃, the maximum power output is enhanced by approximately 40% and 230% for carbon/CO2 and carbon/catalyst/CO2 systems, respectively, compared with that of the carbon/He configuration. The increase observed when employing the catalyst and CO2 as the carrier gas can be primarily attributed to the pronounced effect of the catalyst on carbon-gasification through the reverse-Boudouard reaction, and the subsequent in situ electro-oxidation of CO at the anode three-phase boundary.

Key words: Direct carbon fuel cell, Internal catalytic gasification, Copper/ceria anode, Copper/ceria catalyst