Interface reactivity study between La0 6Sr0 4Co0 2Fe0 8O3-δ (LSCF) cathode material and metallic interconnect for fuel cell

被引：41
作者：
Ardigo, M. R. [1 ]
Perron, A. [1 ]
Combemale, L. [1 ]
Heintz, O. [1 ]
Caboche, G. [1 ]
Chevalier, S. [1 ]
机构：
[1] Univ Bourgogne, Dept Interface & React Mat, Lab Interdisciplinaire Carnot Bourgogne ICB, UMR CNRS 5209, F-21078 Dijon, France
来源：
JOURNAL OF POWER SOURCES | 2011年 / 196卷 / 04期
关键词：
SOFC; Electrode reactivity; Cobaltite; Mixed conductor; Cathode; Interconnect; CHROMIUM DEPOSITION; SOFC INTERCONNECT; IDEAL-CELL; TEMPERATURE; OXIDES; VAPORIZATION; VOLATILITY; OXIDATION; CORROSION; VAPOR;
D O I：
10.1016/j.jpowsour.2010.09.063
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：
Interface reactivity between La0 6Sr0 4CO0 2Fe0 8O3-delta (LSCF) cathode material and metallic interconnect (Crofer22APU) was investigated in laboratory air at 700 degrees C Due to the interconnect geometry two interfaces have been analysed (I) interconnect rib/cathode interface (physically in contact) (ii) the interface under the channel of interconnect In both cases formation of a parasite phase was observed after various ageing treatments (20h 100 h and 200h) However the growth of the determined SrCrO4 parasite phase depends on interface type and on ageing time Two different mechanisms have been established in function of interface type (i) SrCrO4 phase was formed after solid state diffusion of Cr from metallic interconnect to the cathode (ii) gas phase reaction Induced formation of SrCrO4 under the channel of interconnect Finally the influence of a chemical etching on cathode/interconnect reactivity was evaluated (c) 2010 Elsevier B V All rights reserved
引用
收藏
页码：2037 / 2045
页数：9
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