Tailoring the oxygen permeability of BaCo0.4Fe0.4Y0.2-x AxO3-? (x=0, 0.1; A: Zr, Mg, Zn) cubic perovskite

被引：12

作者：

Alam, M. S. ^{[1
,2
]}

Kagomiya, Isao ^{[1
]}

Kakimoto, Ken-ichi ^{[1
]}

机构：

[1] Nagoya Inst Technol, Dept Life Sci & Appl Chem, Gokiso cho,Showa ku, Nagoya 4668555, Japan

[2] Univ Chittagong, Fac Sci, Dept Phys, Chattogram 4331, Bangladesh

来源：

CERAMICS INTERNATIONAL | 2023年 / 49卷 / 07期

关键词：

Mixed conductor; Perovskite oxides; Oxygen permeation; Mohr ?s salt titration; Oxygen vacancy; OXIDE FUEL-CELLS; ELECTRICAL-CONDUCTIVITY; HIGH-PERFORMANCE; CATHODE MATERIAL; PERMEATION; REDUCTION; MEMBRANE;

D O I：

10.1016/j.ceramint.2022.11.336

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This research has been conducted on BaCo0.4Fe0.4Y0.2-xAxO3-delta, which is doped by different metal elements of Zr, Mg, and Zn. The prime concern of this study is to observe the oxygen permeability, corresponding to mixed ionicelectronic conductivities of the prepared samples. Synchrotron x-ray powder diffraction explorations confirmed that all prepared compositions belong to the perovskite structure with impurity-free cubic phase. All the samples express thermal stability. The raising of total conductivity of all the studied compositions shows relative relation to the change of temperature, where doped samples have higher values than undoped ones. This study found that Mg and Zn doping improve oxygen permeability in comparison to BaCo0.4Fe0.4Y0.1Zr0.1O3-delta (BCFZY) because of the higher oxygen non-stoichiometry in addition to the low average binding energy. The high oxygen permeability of Mg and Zn doped samples indicates potentiality as a cathode of solid oxide fuel cells.

引用

页码：11368 / 11377

页数：10

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