考虑CO电化学氧化的甲烷作燃料的固体燃料电池的热力学分析(英文)

【摘要】：Thermodynamic analyses in the literature have shown that solid oxide fuel cells(SOFCs) with proton conducting electrolyte(H-SOFC) exhibited higher performance than SOFC with oxygen ion conducting electrolyte(O-SOFC).However, these studies only consider H2 electrochemical oxidation and totally neglect the contribution of CO electrochemical oxidation in O-SOFC. In this short communication, a thermodynamic model is developed to compare the theoretically maximum efficiencies of H-SOFC and O-SOFC, considering the electrochemical oxidation of CO in O-SOFC anode. It is found that O-SOFC exhibits a higher maximum efficiency than H-SOFC due to the contribution from CO electrochemical oxidation, which is contrary to the common understanding of electrolyte effect on SOFC performance. The effects of operating temperature and fuel utilization factor on the theoretical efficiency of SOFC are also analyzed and discussed. 【作者单位】： Building
【关键词】： Solid oxide fuel cell Thermodynamics Proton conductor Oxygen ion conductor Hydrocarbon fuels
【基金】：Supported by Hong Kong Research Grant Council(PolyU 5238/11E)
【分类号】：TM911.4;O642
【正文快照】： 1.IntroductionSolid oxide fuel cells(SOFCs)have been identified as efficient andenvironmental-friendly electrochemical devices for power generation.Compared with low temperature fuel cells(such as proton exchangemembrane fuel cells),one attraction of SOF

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