Characterisation of the electrode-electrolyte BIMEVOX system for oxygen separation: Part II. Thermal studies under controlled atmosphere

被引：19

作者：

Pirovano, C ^{[1
]}

Vannier, RN ^{[1
]}

Nowogrocki, G ^{[1
]}

Boivin, JC ^{[1
]}

Mairesse, G ^{[1
]}

机构：

[1] Univ Sci & Technol Lille, ENS Chim Lille, Lab Cristallochim & Physicochim Solide, UMR 8012, F-59652 Villeneuve Dascq, France

来源：

SOLID STATE IONICS | 2003年 / 159卷 / 1-2期

关键词：

BIMEVOX; oxygen separation; thermogravimetry; thermodiffraction; oxygen;

D O I：

10.1016/S0167-2738(03)00078-X

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：

The reduction of Bi4V2O11 and BIMEVOX powders was investigated using two methods: thermogravimetric analyses and high-temperature X-ray diffraction under hydrogen flow. The chemical reduction, due to a V-V-V-IV reduction, was compared to the evolution of cathodes of dense BIMEVOX membranes under current bias which had previously been characterised using in situ X-ray synchrotron diffraction. This correlation enables to quantify the level of reduction reached on Bi4V2O11, membranes under operating conditions. This explains the oxygen transfer in the materials, at least at the cathode under bias. (C) 2003 Elsevier Science B.V All rights reserved.

引用

页码：181 / 191

页数：11

共 8 条

[1]

AUDINOT JN, 1999, THESIS U BORDEAUX I

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