Citation: XIE Yong-min, LI Jiang-lin, HOU Jin-xing, WU Pei-jia, LIU Jiang, LIU Qing-sheng. Direct use of coke in a solid oxide fuel cell[J]. Journal of Fuel Chemistry and Technology, ;2018, 46(10): 1168-1174. shu

Direct use of coke in a solid oxide fuel cell

1.
School of Metallurgy and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
2.
New Energy Research Institute, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China

Corresponding author: LIU Qing-sheng, 397176537@qq.com
Received Date: 15 May 2018
Revised Date: 18 August 2018

Fund Project: the National Natural Science Foundation of China 51564019The project was supported by the National Natural Science Foundation of China (51564019) and the Doctoral Scientific Research Foundation of Jiang-xi University of Science and Technology

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Direct carbon solid oxide fuel cell (DC-SOFC) is a potential technology for generating electricity from solid carbon fuel with high conversion efficiency and low pollution. In this study, the use of industrial coke as a fuel for a direct carbon solid oxide fuel cell (DC-SOFC) was investigated. Tubular yttrium-stabilized zirconia (YSZ) electrolyte-supported solid oxide fuel cells (SOFCs) with a cermet of silver and gadolinium-doped ceria (Ag-GDC) as electrode material were fabricated. Raman spectroscopy, scanning electron microscopy and energy dispersive X-ray spectroscopy were applied to characterize the investigated coke fuels. It was observed that the coke fuel wa micron-sized particles with many structural defects, which favored the Boudouard reaction occurring in a DC-SOFC. A peak power density of 149 mW/cm² at 850 ℃ was observed for pure coke fuel, and it improved to 217 mW/cm² when a Fe-based catalyst was added to enhance the Boudouard reaction. The degradation performance of the DC-SOFC during a discharging test was analyzed according to the electrochemical characterization and emitted gas measurements. The performed test supported the feasibility of using coke as fuel in an all-solid-state DC-SOFC to generate electricity.
- solid oxide fuel cell,
- direct carbon,
- coke,
- iron catalyst
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1.
沈阳化工大学材料科学与工程学院沈阳 110142