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

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

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: Paper › 査読

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 Ce_0.9Gd_0.1O_1.95 and Ce _0.992Nb_0.008O₂ was good in humid hydrogen atmosphere. On the other hand, La_0.9Ca_0.1Cr _1-xAl_xO₃ (x=0.2, 0.8), SrZr _0.825Y_0.1Ru_0.075O₃ 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	English
ページ	1369-1375
ページ数	7
出版ステータス	Published - 2005 12月 1
イベント	9th International Symposium on Solid Oxide Fuel Cells, SOFC IX - Quebec, Canada 継続期間: 2005 5月 15 → 2005 5月 20

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Other	9th International Symposium on Solid Oxide Fuel Cells, SOFC IX
国/地域	Canada
City	Quebec
Period	05/5/15 → 05/5/20

ASJC Scopus subject areas

工学（全般）

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引用スタイル

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title = "Electrochemical performance of oxide anode materials and catalytic effect of current collector",

abstract = "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.",

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T1 - Electrochemical performance of oxide anode materials and catalytic effect of current collector

AU - Yashiro, Keiji

AU - Nakamura, Takashi

AU - Kaimai, Atsushi

AU - Otake, Takanori

AU - Kawada, Tatsuya

AU - Mizusaki, Junichiro

PY - 2005/12/1

Y1 - 2005/12/1

N2 - 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.

AB - 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.

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T2 - 9th International Symposium on Solid Oxide Fuel Cells, SOFC IX

Y2 - 15 May 2005 through 20 May 2005

ER -

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

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