Direct-hydrocarbon solid oxide fuel cells

作者：Liu Jiang^*

来源：Progress in Chemistry, 2006, 18(7-8): 1026-1033.

• solid oxide fuel cells (SOFC)
• hydrocarbons
• carbon deposition
• anode reactions
• catalysts
• electrochemical oxidation

Direct-hydrocarbon solid oxide fuel cell (D-HC SOFC) can directly operate on low-cost and readily availablehydrocarbon fuels without reforming. With high power density and low operation cost, D-HC SOFC has the potential of greatly speeding the application of solid oxide fuel cells (SOFC) in portable devices, back-up power supplies, auxiliary power units (APU) and distributed- power stations. At the beginning of this paper, the principle of SOFC is briefly introduced followed by a thermodynamic analysis on the feasibility of D-HC SOFC. Then, the status of DHC SOFC research and development is reviewed. It is showed that most of the research on D-HC SOFC has been focused on avoiding carbon deposition caused by pyrolysis of hydrocarbon fuels at elevated operating temperatures. There are three ways to remove carbon in D-HC SOFC: lowering operating temperature, using proper catalyst that can suppress carbon formation reaction in anodes, and promoting electrochemical oxidation by running SOFC at large enough current. Some works on the anode reaction mechanism are also described. Finally, the author's view on further research and development on D-HC SOFC is presented, that more work is required in D-HC SOFC stacks and anode reaction mechanisms associated with gas (including reactants and products and any other kind of gases produced during SOFC operation) distributions in SOFC.

• 出版日期2006-8
• 单位华南理工大学