Electrochemical performance of oxide anode materials and catalytic effect of current collector

Keiji Yashiro, Takashi Nakamura, Atsushi Kaimai, Takanori Otake, Tatsuya Kawada, Junichiro Mizusaki

研究成果: 会議への寄与学会論文査読

3 被引用数 (Scopus)

抄録

In order to overcome the problems of SOFC anode such as carbon deposition and microstructural change by oxidation, it is desired to develop a reliable substitute for nickel/yttria stabilized zirconia cermet. Several kinds of oxide materials were tested as fuel electrode by means of impedance spectroscopy and steady state polarization measurements. These measurements confirmed that anode performance of Ce0.9Gd0.1O1.95 and Ce 0.992Nb0.008O2 was good in humid hydrogen atmosphere. On the other hand, La0.9Ca0.1Cr 1-xAlxO3 (x=0.2, 0.8), SrZr 0.825Y0.1Ru0.075O3 showed much poorer performance. The reaction kinetics of doped ceria was also investigated and it was revealed that doped ceria has almost the same dependence on gaseous partial pressure and temperature. A possible kinetic equation is proposed, though unclear points still remain.

本文言語英語
ページ1369-1375
ページ数7
出版ステータス出版済み - 2005
イベント9th International Symposium on Solid Oxide Fuel Cells, SOFC IX - Quebec, カナダ
継続期間: 2005 5月 152005 5月 20

会議

会議9th International Symposium on Solid Oxide Fuel Cells, SOFC IX
国/地域カナダ
CityQuebec
Period05/5/1505/5/20

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