Effect of A-site stoichiometry on phase stability and electrical conductivity of the perovskite Las(Ni0.59Fe0.41)O3-δ and its compatibility with (La0.85Sr0.15)0.91MnO3-δ and Zr0.85Y0.15O2.925

被引：39

作者：

Knudsen, J ^{[1
]}

Friehling, PB ^{[1
]}

Bonanos, N ^{[1
]}

机构：

[1] Riso Natl Lab, Dept Mat Res, DK-1400 Roskilde, Denmark

来源：

SOLID STATE IONICS | 2005年 / 176卷 / 17-18期

关键词：

SOFC; in-plane conductivity; perovskite; A-site stoichiometry; compatibility;

D O I：

10.1016/j.ssi.2005.04.010

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

To investigate the influence of A-site stoichiometry on phase stability and electrical conductivity of the perovskite based series La-S(Ni0.59Fe0.41)O3-delta for cathode current collection in solid oxide fuel cells, X-ray diffraction and DC electrical conductivity studies were performed on samples, prepared by the glycine nitrate combustion method. The chemical compatibility of La-0.99(Ni0.59Fe0.41)O3-delta with the cathode material (La0.85Sr0.15)(0.91)MnO3-delta and the electrolyte Y2O3-doped ZrO2 (8 mol%) was likewise studied by X-ray diffraction and scanning electron microscopy. Small deviations (similar to 1 at.%) in the A-site stoichiometry of the perovskite did not result in significant change to the electrical conductivity. Extensive reaction between La-0.99(Ni0.59Fe0.41)O3-delta and 8 mol% Y2O3 doped ZrO2 after sintering was observed by X-ray diffraction. Reaction between La-0.99(Ni0.59Fe0.41)O3-delta and (La0.85Sr0.15)(0.91)MnO3-delta resulted in a single perovskite material when the compounds were cosintered. The interface between a screen-printed layer of La-0.99(Ni0.59Fe0.41)O3-delta and a layer of Ce0.9Gd0.10O3-delta/(La0.85Sr0.15)(0.91)MnO3-delta composite has been investigated and the extent of the reaction zone determined by energy dispersive X-ray spectroscopy. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：1563 / 1569

页数：7

共 18 条

[1] LaNi0.6Fe0.4O3 as a cathode contact material for solid oxide fuel cells [J].

Basu, RN ;

Tietz, F ;

Teller, O ;

Wessel, E ;

Buchkremer, HP ;

Stöver, D .

JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 2003, 7 (07) :416-420

[2] 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

[3] GLYCINE NITRATE COMBUSTION SYNTHESIS OF OXIDE CERAMIC POWDERS [J].

CHICK, LA ;

PEDERSON, LR ;

MAUPIN, GD ;

BATES, JL ;

THOMAS, LE ;

EXARHOS, GJ .

MATERIALS LETTERS, 1990, 10 (1-2) :6-12

[4] AN ELECTRON-MICROSCOPE INVESTIGATION OF PHASES IN THE SYSTEM LA-NI-O [J].

DRENNAN, J ;

TAVARES, CP ;

STEELE, BCH .

MATERIALS RESEARCH BULLETIN, 1982, 17 (05) :621-626

[5] SOLID-STATE REACTION OF LA(CO1-XNIX)O3 WITH 10-MOL-PERCENT Y2O3-ZRO2 [J].

ECHIGOYA, J ;

HIRATSUKA, S ;

SUTO, H .

MATERIALS TRANSACTIONS JIM, 1989, 30 (10) :789-799

[6] SOFC technology development at Rolls-Royce [J].

Gardner, FJ ;

Day, MJ ;

Brandon, NP ;

Pashley, MN ;

Cassidy, M .

JOURNAL OF POWER SOURCES, 2000, 86 (1-2) :122-129

[7] Characterisation of LaNi1-xCoxO3 as a possible SOFC cathode material [J].

Hrovat, M ;

Katsarakis, N ;

Reichmann, K ;

Bernik, S ;

Kuscer, D ;

Holc, J .

SOLID STATE IONICS, 1996, 83 (1-2) :99-105

[8] Oxygen permeability of LaFe1-xNixO3-δ solid solutions [J].

Kharton, VV ;

Viskup, AP ;

Naumovich, EN ;

Tikhonovich, VN .

MATERIALS RESEARCH BULLETIN, 1999, 34 (08) :1311-1317

[9] Chemical compatibility of the LaFeO3 base perovskites (La0.6Sr0.4)(z)Fe(0.8)M(0.2)O(3-delta) (z=1, 0.9; M=Cr, Mn, Co, Ni) with yttria stabilized zirconia [J].

Kindermann, L ;

Das, D ;

Nickel, H .

SOLID STATE IONICS, 1996, 89 (3-4) :215-220

[10]

KNUDSEN J, UNPUB

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