TY  - JOUR
AU  - Ma, Qianli
AU  - Iwanschitz, Boris
AU  - Dashjav, Enkhtsetseg
AU  - Baumann, Stefan
AU  - Sebold, Doris
AU  - Arul Raj, Irudayam
AU  - Mai, Andreas
AU  - Tietz, Frank
TI  - Microstructural variations and their influence on the performance of solid oxide fuel cells based on yttrium-substituted strontium titanate ceramic anodes
JO  - Journal of power sources
VL  - 279
SN  - 0378-7753
CY  - New York, NY [u.a.]
PB  - Elsevier
M1  - FZJ-2015-00720
SP  - 678 - 685
PY  - 2015
AB  - Donor-substituted strontium titanates have been widely recognised as alternative anode materials to the state-of-the-art Ni/YSZ cermets in solid oxide fuel cells (SOFCs). Electrolyte-supported SOFCs based on Y0.07Sr0.895TiO3 ceramic anodes with different microstructural designs were prepared. Ni or Ni with Ce0.8Gd0.2O1.9 (CGO) was infiltrated onto the pore walls within the ceramic anode framework as an electrocatalyst for anode reactions. Performances and electrochemical impedance spectroscopy measurements of the cells were analysed in detail to observe the influence of low ionic conductivity of Y0.07Sr0.895TiO3 to cell performance, to understand how to control the degradation of the cells, and to obtain a possible mechanism for the anode processes. The anode design containing both functional and current collecting layers with sufficient Ni-CGO infiltration is favourable for high power output and low performance degradation.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000350919600076
DO  - DOI:10.1016/j.jpowsour.2015.01.063
UR  - https://juser.fz-juelich.de/record/186647
ER  -