SOFC Cathodes Composed of LaNi0.6Fe0.4O3 and Pr-Doped CeO2

被引：34

作者：

Chiba, Reiichi ^{[1
]}

Komatsu, Takeshi ^{[1
]}

Orui, Himeko ^{[1
]}

Taguchi, Hiroaki ^{[1
]}

Nozawa, Kazuhiko ^{[1
]}

Arai, Hajime ^{[1
]}

机构：

[1] NTT Energy & Environm Syst Labs, Nippon Telegraph & Tel Corp, Kanagawa 2430198, Japan

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2009年 / 12卷 / 05期

关键词：

cathodes; cerium compounds; electrochemical electrodes; lanthanum compounds; nickel compounds; praseodymium; solid oxide fuel cells; OXIDE FUEL-CELLS; ANODE; CERIA; CONDUCTIVITY; ELECTRODE; PROPERTY;

D O I：

10.1149/1.3086726

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Solid oxide fuel cell (SOFC) cathodes consisting of LaNi0.6Fe0.4O3 and Ce(Ln)O2-delta (Ln=Pr, Sm, Gd) were investigated with the ac impedance method. The interface resistance of cathodes with Pr-doped ceria was approximately one-third of those with Sm- and Gd-doped ceria. Cathodes with Pr-doped ceria had frequency peaks in the imaginary part impedance spectra that were 100 times lower than those for cathodes without Pr-doped ceria. This low-frequency peak for the Pr-doped ceria was caused by its large interface capacitance. This suggests that triple-phase boundary is present over the entire surface of the Pr-doped ceria particles.

引用

页码：B69 / B72

页数：4

共 22 条

[1] Electrode kinetics of porous mixed-conducting oxygen electrodes [J].

Adler, SB ;

Lane, JA ;

Steele, BCH .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1996, 143 (11) :3554-3564

[2]

Bard AJ., 2001, ELECTROCHEMICAL METH, V2nd, P368

[3] Properties of La1-ySryNi1-xFexO3 as a cathode material for a low-temperature operating SOFC [J].

Chiba, R ;

Yoshimura, F ;

Sakurai, Y .

SOLID STATE IONICS, 2002, 152 :575-582

[4] An investigation of LaNi1-xFexO3 as a cathode material for solid oxide fuel cells [J].

Chiba, R ;

Yoshimura, F ;

Sakurai, Y .

SOLID STATE IONICS, 1999, 124 (3-4) :281-288

[5]

Chiba R., 1999, P 6 INT S SOL OX FUE, V99-19, P453

[6] LaNi0.6Fe0.4O3-Ceria composite cathode for SOFCs operating at intermediate temperatures [J].

Chiba, Reiichi ;

Orui, Himeko ;

Komatsu, Takeshi ;

Tabata, Yoshitaka ;

Nozawa, Kazuhiko ;

Arakawa, Masayasu ;

Sato, Kazunori ;

Arai, Hajime .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2008, 155 (06) :B575-B580

[7] Property change of a LaNi0.6Fe0.4O3 cathode in the initial current loading process and the influence of a ceria interlayer [J].

Chiba, Reiichi ;

Tabata, Yoshitaka ;

Komatsu, Takeshi ;

Orui, Himeko ;

Nozawa, Kazuhiko ;

Arakawa, Masayasu ;

Arai, Hajime .

SOLID STATE IONICS, 2008, 178 (31-32) :1701-1709

[8] STRUCTURAL PHASE-TRANSITION AND IONIC-CONDUCTIVITY IN 0.88ZRO(2)-(0.12-X)SC2O3-X-AL2O3 [J].

ISHII, T .

SOLID STATE IONICS, 1995, 78 (3-4) :333-338

[9] Impedance of solid oxide fuel cell LSM/YSZ composite cathodes [J].

Jorgensen, MJ ;

Mogensen, M .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2001, 148 (05) :A433-A442

[10] Determination of oxygen vacancy concentration in a thin film of La0.6Sr0.4CoO3-δ by an electrochemical method [J].

Kawada, T ;

Suzuki, J ;

Sase, M ;

Kaimai, A ;

Yashiro, K ;

Nigara, Y ;

Mizusaki, J ;

Kawamura, K ;

Yugami, H .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2002, 149 (07) :E252-E259

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