Anode Fluidization of a Liquid Tin Anode SOFC Operated on Simulated Syngas. (30th May 2017)

• Record Type: Journal Article
• Authors: Cao, Tianyu; Shi, Yixiang; Cai, Ningsheng
• Is Part Of: ECS transactions. Volume 78:Number 1(2017)
• Page Start: 1501
• Page End: 1510
• Publication Date: 2017-05-30
• Subjects: Electrochemistry -- Periodicals; Electrochemistry; Periodicals; Electronic journals; Electronic journal; 541.37
• DOI: 10.1149/07801.1501ecst
• Languages: English
• ISSNs: 1938-5862

Abstract

Abstract : Liquid tin has been widely employed as anodes in SOFCs to digest carbonaceous fuels. However, formation of a SnO2 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 SnO2 film by anode fluidization. Tubular LTA-SOFC has been fabricated and tested in present work. Fuels (H2 and simulated syngas with different H2 /CO ratios) are supplied to the electrochemical reactive interface between the anode and the electrolyte via a manner of anode fluidization. SnO2 formed in anode was reduced by H2 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.