Kinetics and thermodynamics of carbonation of a promising SOFC cathode material La0.5Ba0.5CoO3-δ(LBC)

被引：8
|
作者：
Arulmozhi, Nakkiran [1 ]
Kan, Wang Hay [2 ]
Thangadurai, Venkataraman [2 ]
Karan, Kunal [1 ,3 ]
机构：
[1] Queens Univ, Dept Chem Engn, Kingston, ON K7L 3N6, Canada
[2] Univ Calgary, Dept Chem, Calgary, AB T2N 1N4, Canada
[3] Univ Calgary, Dept Chem & Petr Engn, Calgary, AB T2N 1N4, Canada
来源：
JOURNAL OF MATERIALS CHEMISTRY A | 2013年 / 1卷 / 47期
基金：
加拿大自然科学与工程研究理事会;
关键词：
X-RAY-DIFFRACTION; OXYGEN NONSTOICHIOMETRY; DIOXIDE SORPTION; FUEL-CELLS; TEMPERATURE; OXIDE; CO2; STABILITY; ELECTROLYTES; STRONTIUM;
D O I：
10.1039/c3ta11711a
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：
This work examines the reactivity of a potentially promising SOFC cathode material, La0.5Ba0.5CoO3-delta (LBC), under CO2 atmosphere. Through a combination of different techniques - thermogravimetric analysis, ex situ XRD analyses of reacted products, and in situ XRD analysis - the reaction pathway and kinetics for LBC carbonation is investigated. The thermodynamic phase boundary for carbonate formation in the LBC-CO2 system has been generated and fundamental thermodynamic parameters - the standard state enthalpy (Delta H degrees) and the standard state entropy (Delta S degrees) - are determined.
引用
收藏
页码：15117 / 15127
页数：11
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