文献类型：期刊文献

英文题名：La0.6Sr0.4CoO3-δ -Ce0.8Gd0.2O2-δ nanocomposites prepared by a sol-gel process for intermediate temperature solid oxide fuel cell cathode applications

作者：Wei, Feifei[1];Cao, Hongliang[1];Chen, Xin[1,2]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Adv Polymer Mat, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, Shanghai 200050, Peoples R China

年份：2016

卷号：51

期号：4

起止页码：2160

外文期刊名：JOURNAL OF MATERIALS SCIENCE

收录：;EI(收录号：20154601546550);WOS:【SCI-EXPANDED(收录号:WOS:000367647100049)】；

基金：This work was supported by Shanghai Leading Academic Discipline Project (B502), Shanghai Key Laboratory Project (08DZ2230500), and Shanghai Pujiang Program (13PJ1401700).

语种：英文

外文关键词：Powder metals - Sols - Solid oxide fuel cells (SOFC) - Cathodes - Electrochemical electrodes - Ethylene glycol - Electrochemical impedance spectroscopy - Ethylene

摘要：La0.6Sr0.4CoO3-delta (LSC)-Ce0.8Gd0.2O2-delta (GDC) nanocomposite materials were prepared by a modified sol-gel method to improve solid oxide fuel cell cathode performance in intermediate temperature. Metal acetates precursors and citric acid combined with ethylene glycol as complex agents were used in the sol-gel process. Nano foam-like GDC powders were introduced into the sol-gel process to get the nanocomposites with the GDC content in the range of 10-50 wt%. In addition, pure LSC nano powders were also synthesized for comparison. The crystalline phases, morphologies, and elemental distributions of the pure LSC and LSC-GDC composite powders were characterized, and their electrode performances were investigated with electrochemical impedance spectroscopy. The results showed the GDC particles were largely covered by LSC, and the optimal GDC content was 30 wt% for the LSC-GDC electrode performance in this study.