Influence of microstructure on electrical properties in BaZr0.5In0.5O3-δ proton conductor

被引：21

作者：

Ahmed, Istaq ^{[1
]}

Eriksson, Sten-G. ^{[1
]}

Ahlberg, Elisabet ^{[2
]}

Knee, Christopher S. ^{[2
]}

机构：

[1] Chalmers Univ Technol, Dept Chem & Biol Engn, SE-41296 Gothenburg, Sweden

[2] Univ Gothenburg, Dept Chem, SE-41296 Gothenburg, Sweden

来源：

SOLID STATE IONICS | 2008年 / 179卷 / 21-26期

关键词：

X-ray diffraction; ESEM; proton conductor; perovskite; grain boundaries;

D O I：

10.1016/j.ssi.2008.02.031

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：

Two different preparative routes, one a wet chemical route (WCR) and the other a traditional solid state sintering route (SSR), have been used to synthesise the oxygen deficient perovskite BaZr0.5In0.5O3-delta. Analysis of X-ray powder diffraction data showed that both phases adopt cubic crystal structures. Environmental scanning electron microscope (ESEM) images showed that a smaller grain size was obtained for the WCR sample. Dynamic then-no-gravimetric analysis indicated significant mass losses for hydrated samples compared to their respective dried samples. Proton conductivity was investigated for hydrated and as-prepared phases under dry and wet atmospheres, respectively. The hydrated sample prepared via the solid state sintering route displayed a higher proton conductivity under dry conditions, reflecting the presence of fewer grain boundaries in this sample. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：1155 / 1160

页数：6

共 25 条

[1] Structural study and proton conductivity in Yb-doped BaZrO3 [J].

Ahmed, I. ;

Eriksson, S.-G. ;

Ahlberg, E. ;

Knee, C. S. ;

Gotlind, H. ;

Johansson, L.-G. ;

Karlsson, M. ;

Matic, A. ;

Borjesson, L. .

SOLID STATE IONICS, 2007, 178 (7-10) :515-520

[2] Proton conductivity and low temperature structure of In-doped BaZrO3 [J].

Ahmed, I. ;

Eriksson, S. -G. ;

Ahlberg, E. ;

Knee, C. S. ;

Karlsson, M. ;

Matic, A. ;

Engberg, D. ;

Borjesson, L. .

SOLID STATE IONICS, 2006, 177 (26-32) :2357-2362

[3] Synthesis and structural characterization of perovskite type proton conducting BaZr1-xInxO3-δ (0.0≤x≤0.75) [J].

Ahmed, I. ;

Eriksson, S-G. ;

Ahlberg, E. ;

Knee, C. S. ;

Berastegui, P. ;

Johansson, L-G. ;

Rundlof, H. ;

Karlsson, M. ;

Matic, A. ;

Borjesson, L. ;

Engberg, D. .

SOLID STATE IONICS, 2006, 177 (17-18) :1395-1403

[4] Location of deuteron sites in the proton conducting perovskite BaZr0.50In0.50O3-y [J].

Ahmed, Istaq ;

Knee, Christopher S. ;

Karlsson, Maths ;

Eriksson, S. -G. ;

Henry, Paul F. ;

Matic, Aleksandar ;

Engberg, Dennis ;

Borjesson, Lars .

JOURNAL OF ALLOYS AND COMPOUNDS, 2008, 450 (1-2) :103-110

[5]

Ahmed I, 2007, CERAM ENG SCI PROC, V27, P105

[6]

Bohn HG, 2000, J AM CERAM SOC, V83, P768

[7] TRANSPORT-PROPERTIES AND CONDUCTION MECHANISM IN HIGH-TEMPERATURE PROTONIC CONDUCTORS [J].

BONANOS, N .

SOLID STATE IONICS, 1992, 53 :967-974

[8] Sinterability of commercial 8 mol% yttria-stabilized zirconia powders and the effect of sintered density on the ionic conductivity [J].

Gibson, IR ;

Dransfield, GP ;

Irvine, JTS .

JOURNAL OF MATERIALS SCIENCE, 1998, 33 (17) :4297-4305

[9] Non-stoichiometry, grain boundary transport and chemical stability of proton conducting perovskites [J].

Haile, SM ;

Staneff, G ;

Ryu, KH .

JOURNAL OF MATERIALS SCIENCE, 2001, 36 (05) :1149-1160

[10] High-temperature proton conductivity in acceptor-doped LaNbO4 [J].

Haugsrud, Reidar ;

Norby, Truls .

SOLID STATE IONICS, 2006, 177 (13-14) :1129-1135

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