Interface reaction and cation transport behavior between perovskite ozides of La1-zSrzCoO3 and La0.8Sr0.2FeO3
Cation transport behavior through the lanthanum strontium cobaltites, La1-xSrxCoO3(LSC)/lanthanum strontium ferrite, La0.8Sr0.2FeO3 (LSF) interface was examined by X-ray diffractometry (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDX). Diffusion couples made of La0.8Sr0.2FeO3 (LSF82) and LSCs with different Sr contents (x=0.1 : LSC91, x=0.2 : LSC82 and x=0.5 : LSC55), were treated at 1373 K in air. It has been observed that faceted particles of spinel type CoFe2O4 were precipitated at a detached interface of the LSF82 pellets in the LSC91/LSF82 and LSC82/LSF82 diffusion couples. For the LSC55/LSF82 couple, cobalt oxide particles were precipitated on the LSF82 surface, while the formation of a Sr rich phase was observed on the LSC55 surface. It has been found that the interface stability of the LSC/LSF diffusion couples strongly depends on the La/Sr composition at the A site of the La1-xSrxCoO3 perovskite compounds.
Solid ozide fuel cell (SOFC) Cathode Perovskite Cation diffusion Interface reaction
Haruo Kishimoto Natsuko Sakai Teruhisa Horita Katsuhiko Yamaji Manuel E.Brito Harumi Yokokawa
Manuel E.Brito, Harumi Yokokawa National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central No.5, Higashi 1-1-1, Tsukuba 305-8565, Japan
国际会议
The 16th International Conference on Solid State Ionics(第十六届国际固态离子学会议)
上海
英文
1338-1342
2007-07-01（万方平台首次上网日期，不代表论文的发表时间）