X-ray absorption and diffraction studies of La0.6Ca0.4CoO3 perovskite, a catalyst for bifunctional oxygen electrodes

被引：38

作者：

Haas, O ^{[1
]}

Holzer, F

Müller, S

McBreen, JM

Yang, XQ

Sun, X

Balasubramanian, M

机构：

[1] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

[2] Brookhaven Natl Lab, Dept Mat Sci, Upton, NY 11973 USA

来源：

ELECTROCHIMICA ACTA | 2002年 / 47卷 / 19期

关键词：

bifunctional oxygen electrodes; zn/air cells; La0.6Ca0.4CoO3; perovskite; in-situ X-ray absorption; X-ray diffraction;

D O I：

10.1016/S0013-4686(02)00241-4

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The chemical stability of La0.6Ca0.4CoO3 perovskite as an electrocatalyst in bifunctional oxygen electrodes has been studied by exsitu and in-situ X-ray absorption spectroscopy and X-ray diffraction measurements. The catalyst was investigated ex-situ as a powder mixed with BN, and in-situ on carbon supports in bilayer air electrodes at different potentials in an electrochemical cell with an alkaline electrolyte. It was found to be stable for at least 1300 h in electrodes operated under the conditions of rechargeable Zn/air cells. Published by Elsevier Science Ltd.

引用

页码：3211 / 3217

页数：7

共 15 条

[1] Oxygen electroreduction mechanism at thin NixCo3-xO4 spinel films in a double channel electrode flow cell (DCEFC)
HellerLing, N
Prestat, M
Gautier, JL
Koenig, JF
Poillerat, G
Chartier, P
[J]. ELECTROCHIMICA ACTA, 1997, 42 (02) : 197 - 202
[2] HOLZER F, 1998, 38 POW SOURC C CHERR, P354
[3] The substitution effect of Ca2+ ion on the physical properties in nonstoichiometric Dy1-xCaxCoO3-y system
Kim, MG
Im, YS
Oh, EJ
Kim, KH
Yo, CH
[J]. PHYSICA B, 1997, 229 (3-4): : 338 - 346
[4] KORTENAAR V, 1995, J POWER SOURCES, V51, P56
[5] A STUDY OF BISMUTH RUTHENATE AS AN ELECTROCATALYST FOR BIFUNCTIONAL AIR ELECTRODES
MARKOVIC, NM
ROSS, PN
[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1994, 141 (10) : 2590 - 2598
[6] EXAFS - A NEW TOOL FOR THE STUDY OF BATTERY AND FUEL-CELL MATERIALS
MCBREEN, J
OGRADY, WE
PANDYA, KI
[J]. JOURNAL OF POWER SOURCES, 1988, 22 (3-4) : 323 - 340
[7] EXAFS STUDY OF THE NICKEL-OXIDE ELECTRODE
MCBREEN, J
OGRADY, WE
PANDYA, KI
HOFFMAN, RW
SAYERS, DE
[J]. LANGMUIR, 1987, 3 (03) : 428 - 433
[8] MCBREEN J, 48039 BNL
[9] LA0.6CA0.4COO3 - A STABLE AND POWERFUL CATALYST FOR BIFUNCTIONAL AIR ELECTRODES
MULLER, S
STRIEBEL, K
HAAS, O
[J]. ELECTROCHIMICA ACTA, 1994, 39 (11-12) : 1661 - 1668
[10] Müller S, 1999, J NEW MAT ELECTR SYS, V2, P227

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