Performance and stability of SOFC anode prepared by co-precipitation
(0) Nickel oxide and yttria stabilized zirconia (NiO/YSZ) cermets have been prepared using a chemical co-precipitation of hydroxides. The influence of different factors on the microstructure and electrochemical properties of the anode was investigated. The anodes were characterized by impedance spectroscopy at open-circuit potential and under current load at 850℃ in hydrogen/steam atmosphere (H2:H2O= 1:1). The anode polarization resistance was identified by deconvolution of impedance spectra and the influences of current load and pH2O on the impedance spectra of the anode were discussed. Long-term stability of the cell with an anode prepared by co-precipitation was carried out over 1000 h under current density of 430-450 mA/cm2@0.7 V at 850℃.
SOFC Ni-YSZ anode Impedance spectroscopy Electrochemical properties Long-term stability
S.Mosch N.Troifimenko M.Kusnezoff T.Betz M.Kellner
Fraunhofer Institut f(u)r Keramische Technologien und Systeme, 01277 Dresden, Germany Kerafol GmbH, 92676 Eschenbach, Germany
国际会议
The 16th International Conference on Solid State Ionics(第十六届国际固态离子学会议)
上海
英文
1606-1610
2007-07-01（万方平台首次上网日期，不代表论文的发表时间）