Electrochemical characterization of liquid metal anode solid oxide fuel cell

M. LaBarbera, S. Khurana, Mark Valentinovich Fedkin, Serguei Lvov, H. Abernathy, K. Gerdes

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

A liquid tin anode solid oxide fuel cell is operated at 900°C with a variety of fuel feeds, including argon, hydrogen, coal and a coal-water slurry. Characterization of anode performance is carried out by open circuit potential monitoring, linear potential sweeps, and electrochemical impedance spectroscopy combined with equivalent circuit modeling. A cathode symmetric cell is analyzed and modeled to isolate impedance contributions resulting from ionic resistance, cathode mass transport, and cathode charge transfer; results are used to isolate anode mass transport and charge transfer impedances in the fuel cell. Open circuit potential measurements under hydrogen fuel indicate that the dominant anode reaction is electrochemical oxidation of H2, while oxidation of Sn to SnO2 becomes the principal anodic process when the cell is fed with argon, coal, or coal-water slurry. Some chemical reduction of SnO 2 to Sn by chemical reaction with coal is indicated by the cell potential.

Original languageEnglish (US)
Title of host publicationElectrochemical Utilization of Solid Fuels
Pages103-113
Number of pages11
Volume41
Edition12
DOIs
Publication statusPublished - Dec 1 2012
EventElectrochemical Utilization of Solid Fuels - 220th ECS Meeting - Boston, MA, United States
Duration: Oct 9 2011Oct 14 2011

Other

OtherElectrochemical Utilization of Solid Fuels - 220th ECS Meeting
CountryUnited States
CityBoston, MA
Period10/9/1110/14/11

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All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

LaBarbera, M., Khurana, S., Fedkin, M. V., Lvov, S., Abernathy, H., & Gerdes, K. (2012). Electrochemical characterization of liquid metal anode solid oxide fuel cell. In Electrochemical Utilization of Solid Fuels (12 ed., Vol. 41, pp. 103-113) https://doi.org/10.1149/1.3697433