Oxygen permeation and electrical transport of Gd1-xPrxBaCo2O5+δ dense membranes

被引：18

作者：

Yang, Chunli ^{[1
]}

Wu, Xiusheng ^{[2
]}

Fang, Shumin ^{[1
]}

Chen, Chusheng ^{[1
]}

Liu, Wei ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Mat Sci & Engn, Lab Adv Funct Mat & Devices, Hefei 230026, Anhui, Peoples R China

[2] Anhui Univ Architecture, Sch Mat & Chem Engn, Hefei 230022, Peoples R China

来源：

MATERIALS LETTERS | 2009年 / 63卷 / 12期

关键词：

Perovskites; Oxygen permeation; Electrical properties; Bulk diffusion; oxygen surface exchange; PEROVSKITES;

D O I：

10.1016/j.matlet.2009.01.077

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Double-perovskite Gd1-xPrxBaCo2O5+delta membranes showed appreciable oxygen permeability at moderate temperatures. The overall oxygen permeation process of GdBaCo2O5+delta was found to be controlled mainly by the bulk diffusion step with the membrane thickness larger than 0.8 mm, and the limitation by oxygen surface exchange came into play at reduced thickness of 0.8 mm. The electrical conductivity measurement showed Gd1-xPrxBaCo2O5+delta samples possessed a semiconducting behavior at a wide temperature range below 300 degrees C and a metallic behavior at 300-850 degrees C with a high conductivity of nearly 10(3) S cm(-1). (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：1007 / 1009

页数：3

共 12 条

[1] Electrical properties of GdBaCo2O5+x for ITSOFC applications [J].

Chang, Aimin ;

Skinner, Stephen J. ;

Kilner, John A. .

SOLID STATE IONICS, 2006, 177 (19-25) :2009-2011

[2] Selective spin-state switch and metal-insulator transition in GdBaCo2O5.5 -: art. no. 180405 [J].

Frontera, C ;

García-Muñoz, JL ;

Llobet, A ;

Aranda, MAG .

PHYSICAL REVIEW B, 2002, 65 (18) :1-4

[3] Structural and magnetic study of PrBaCo2O5+δ (δ≃0.75) cobaltite -: art. no. 184428 [J].

Frontera, C ;

García-Muñoz, JL ;

Carrillo, AE ;

Ritter, C ;

Marero, DMY ;

Caneiro, A .

PHYSICAL REVIEW B, 2004, 70 (18) :1-9

[4] Oxygen exchange kinetics of epitaxial PrBaCo2O5+δ thin films -: art. no. 024103 [J].

Kim, G ;

Wang, S ;

Jacobson, AJ ;

Yuan, Z ;

Donner, W ;

Chen, CL ;

Reimus, L ;

Brodersen, P ;

Mims, CA .

APPLIED PHYSICS LETTERS, 2006, 88 (02) :1-3

[5] Characterization of GdBaCo2O5+δ cathode for IT-SOFCs [J].

Li, Na ;

Lue, Zhe ;

Wei, B. O. ;

Huang, Xiqiang ;

Chen, Kongfa ;

Zhang, Yaohui ;

Su, Wenhui .

JOURNAL OF ALLOYS AND COMPOUNDS, 2008, 454 (1-2) :274-279

[6] Structural and magnetic studies of ordered oxygen-deficient perovskites LnBaCo2O5+δ, closely related to the "112" structure [J].

Maignan, A ;

Martin, C ;

Pelloquin, D ;

Nguyen, N ;

Raveau, B .

JOURNAL OF SOLID STATE CHEMISTRY, 1999, 142 (02) :247-260

[7] Magnetoresistance in the oxygen deficient LnBaCo(2)O(5.4) (Ln=Eu, Gd) phases [J].

Martin, C ;

Maignan, A ;

Pelloquin, D ;

Nguyen, N ;

Raveau, B .

APPLIED PHYSICS LETTERS, 1997, 71 (10) :1421-1423

[8] High-temperature order-disorder transition and polaronic conductivity in PrBaCo2O5.48 [J].

Streule, S ;

Podlesnyak, A ;

Sheptyakov, D ;

Pomjakushina, E ;

Stingaciu, M ;

Conder, K ;

Medarde, M ;

Patrakeev, MV ;

Leonidov, IA ;

Kozhevnikov, VL ;

Mesot, J .

PHYSICAL REVIEW B, 2006, 73 (09)

[9] Layered perovskites as promising cathodes for intermediate temperature solid oxide fuel cells [J].

Tarancon, Albert ;

Skinner, Stephen J. ;

Chater, Richard J. ;

Hernandez-Ramirez, F. ;

Kilner, John A. .

JOURNAL OF MATERIALS CHEMISTRY, 2007, 17 (30) :3175-3181

[10] Achieving fast oxygen diffusion in perovskites by cation ordering [J].

Taskin, AA ;

Lavrov, AN ;

Ando, Y .

APPLIED PHYSICS LETTERS, 2005, 86 (09) :1-3

← 1 2 →