Sr0.92Y0.08TiO3-δ/Sm0.2Ce0.8O2-δ anode for solid oxide fuel cells running on methane

Title
Sr0.92Y0.08TiO3-δ/Sm0.2Ce0.8O2-δ anode for solid oxide fuel cells running on methane
Authors
김희수윤성필윤정우송신애장성철남석우설용건
Keywords
SYT; Alternative anodes; SDC; Methane; Solid oxide fuel cells
Issue Date
2012-10
Publisher
International journal of hydrogen energy
Citation
VOL 37, NO 21, 16130-16139
Abstract
Yttria-doped strontium titanium oxide (Sr0.92Y0.08TiO3-δ; SYT) was investigated as an alternative anode material for solid oxide fuel cells (SOFCs). The SYT synthesized by the Pechini method exhibits excellent phase stability during the cell fabrication processes and SOFC operation and good electrical conductivity (about 0.85 S/cm, porosity 30%) in reducing atmosphere. The performance of SYT anode is characterized by slow electrochemical reactions except for the gas-phase diffusion reactions. The cell performance with the SYT anode running on methane fuel was improved about 5 times by SDC film coating, which increased the number of reaction sites and also accelerated electrochemical reaction kinetics of the anode. In addition, the SDC-coated SYT anode cell was stably operated for 900 h with methane. These results show that the SDC-coated SYT anode can be a promising anode material for high temperature SOFCs running directly on hydrocarbon fuels.
URI
http://pubs.kist.re.kr/handle/201004/43219
ISSN
03603199
Appears in Collections:
KIST Publication > Article
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