Liquid Tin Anode SOFC For Direct Coal Conversion

Tao, Thomas; Koslowske, Mark; Brodie, Jonathan; Bentley, Jeff

doi:10.1149/ma2011-02/10/471

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2017

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“…Tao et al (5,6) developed tubular LTA-SOFC power systems to digest solid state carbon fuels (7), JP-8 kerosene (8) and other hydrocarbon fuels (9). LTA is found to be robust against impurities in fuels ( 10).…”

Section: Introductionmentioning

confidence: 99%

Anode Fluidization of a Liquid Tin Anode SOFC Operated on Simulated Syngas

2017

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Liquid tin has been widely employed as anodes in SOFCs to digest carbonaceous fuels. However, formation of a SnO 2 blocking film at electrochemical reactive sites hinders further electrochemical reaction and impedes steady power generation of fuel cell system. Here we managed to suppress the formation of isolating SnO 2 film by anode fluidization. Tubular LTA-SOFC has been fabricated and tested in present work. Fuels (H 2 and simulated syngas with different H 2 /CO ratios) are supplied to the electrochemical reactive interface between the anode and the electrolyte via a manner of anode fluidization. SnO 2 formed in anode was reduced by H 2 when the SOFC was discharged at a constant potential of 0.45V, and anode fluidization increased the fuel cell's power density by 50%. We anticipate that anode fluidization in this study will principally simplify the configuration of liquid tin anode SOFC and maintain the stable operation of the fuel cell system.

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