TY - GEN
T1 - Electrochemical characterization of liquid metal anode solid oxide fuel cell
AU - LaBarbera, M.
AU - Khurana, S.
AU - Fedkin, M.
AU - Lvov, S.
AU - Abernathy, H.
AU - Gerdes, K.
PY - 2012
Y1 - 2012
N2 - 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.
AB - 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.
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U2 - 10.1149/1.3697433
DO - 10.1149/1.3697433
M3 - Conference contribution
AN - SCOPUS:84879509453
SN - 9781607683025
T3 - ECS Transactions
SP - 103
EP - 113
BT - Electrochemical Utilization of Solid Fuels
T2 - Electrochemical Utilization of Solid Fuels - 220th ECS Meeting
Y2 - 9 October 2011 through 14 October 2011
ER -