TY - GEN
T1 - Thin film gadolinia doped ceria (GDC) anode for direct conversion of carbon black particles in a single planar SOFC
AU - Werhahn, M. G.
AU - Schneider, O.
AU - Stimming, U.
PY - 2013
Y1 - 2013
N2 - Direct electrochemical conversion of carbon black particles in hydrogen, CO, CO2 and inert gas environments is investigated in a solid oxide direct carbon fuel cell (DCFC). At temperatures ranging from 750-950°C, measurements with a gadolinia doped ceria (GDC) thin film DCFC anode and measurements without this film for comparison are carried out. Direct partial and complete carbon electro-oxidation is observed in contrast to indirect oxidation via carbon gasification and subsequent CO electrooxidation. It was found that the impact of the Boudouard gasification reaction at the anode is insignificant below 800°C for the specific carbon used. The kinetics of the direct carbon oxidation reaction is faster for the cell with the GDC thin film anode than for the cell without, but nonetheless sluggish. Thus the integration of appropriate catalysts into the anode is necessary in the future.
AB - Direct electrochemical conversion of carbon black particles in hydrogen, CO, CO2 and inert gas environments is investigated in a solid oxide direct carbon fuel cell (DCFC). At temperatures ranging from 750-950°C, measurements with a gadolinia doped ceria (GDC) thin film DCFC anode and measurements without this film for comparison are carried out. Direct partial and complete carbon electro-oxidation is observed in contrast to indirect oxidation via carbon gasification and subsequent CO electrooxidation. It was found that the impact of the Boudouard gasification reaction at the anode is insignificant below 800°C for the specific carbon used. The kinetics of the direct carbon oxidation reaction is faster for the cell with the GDC thin film anode than for the cell without, but nonetheless sluggish. Thus the integration of appropriate catalysts into the anode is necessary in the future.
UR - http://www.scopus.com/inward/record.url?scp=84885779922&partnerID=8YFLogxK
U2 - 10.1149/05027.0073ecst
DO - 10.1149/05027.0073ecst
M3 - Conference contribution
AN - SCOPUS:84885779922
SN - 9781607684152
T3 - ECS Transactions
SP - 73
EP - 87
BT - Solid State Ionic Devices 9 - Ion Conducting Thin Films and Multilayers
PB - Electrochemical Society Inc.
T2 - 9th Solid State Ionic Devices Sympsoium - 22nd ECS Meeting
Y2 - 7 October 2012 through 12 October 2012
ER -