Selection and study of basic layered cobaltites as mixed ionic-electronic conductors for proton conducting fuel cells

被引：12

作者：

Goupil, G. ^{[1
]}

Delahaye, T. ^{[1
]}

Sala, B. ^{[2
]}

Joud, F. Lefebvre ^{[1
]}

Gauthier, G. ^{[1
,3
]}

机构：

[1] CEA, LITEN, F-38054 Grenoble, France

[2] Univ Sci Montpellier II UMII, Ctr Tech AREVA NP PTCI F, Montpellier, France

[3] Univ Ind Santander, Grp INTERFASE, Bucaramanga 678, Colombia

来源：

SOLID STATE IONICS | 2014年 / 263卷

关键词：

Proton; Electrode; Hydration; SOFC; Cobalt oxide; OXYGEN NONSTOICHIOMETRY; CHEMICAL-STATE; HYDROGEN; STABILITY; MOBILITY; OXIDE; ELECTROLYSIS; TRANSITION; DIFFUSION; STEAM;

D O I：

10.1016/j.ssi.2014.04.022

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：

High Temperature Steam Electrolysis using Proton Conducting Cells is a promising method for large-scale hydrogen production, but such system requires the development of new electrode materials ideally presenting Mixed Proton and Electron Conductivity. Different cobaltites were investigated in terms of durability and compatibility with the BaZr0.6Y0.1O3 proton conducting electrolyte. REBaCo2O5+delta (RE = Pr, Nd, Sm, Gd, Y),YBaCo4O7, Ca3Co4O9 and Ca3Co2O6, were considered, among which the vacancy ordered perovskites were found to be the most stable in wet air. Oxygen vacancy formation and hydration properties of REBaCo2O5+delta were studied by iodometry and TGA in dry and wet atmospheres, respectively. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：15 / 22

页数：8

共 43 条

[21] Characterization of layered perovskite oxides NdBa1-xSrxCo2O5+δ (x=0 and 0.5) as cathode materials for IT-SOFC [J].