Electrochemical characterization of liquid metal anode solid oxide fuel cell

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

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

3 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
Edition12
DOIs
StatePublished - Dec 1 2012
EventElectrochemical Utilization of Solid Fuels - 220th ECS Meeting - Boston, MA, United States
Duration: Oct 9 2011Oct 14 2011

Publication series

NameECS Transactions
Number12
Volume41
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

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

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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