Novel La2-xCuxNiO4±δ/La4Ni3O10-δ composite materials for intermediate temperature solid oxide fuel cells, IT-SOFC

被引:7
|
作者
Ferkhi, Mosbah [1 ,2 ]
Ringuede, Armelle [2 ]
Cassir, Michel [2 ]
机构
[1] Univ Mohamed Seddik Ben Yahia Jijel, Fac Sci Exactes & Informat, Dept Chem, BP 98, Ouled Aissa 18000, Jijel, Algeria
[2] PSL Res Univ, Chim ParisTech CNRS, Inst Rech Chim Paris, F-75005 Paris, France
关键词
Composite materials; Ruddlesden-Popper; SOFC; Sol-gel; Impedance spectroscopy; CATHODE MATERIAL; IONIC TRANSPORT; LA2NIO4+DELTA; PR; ELECTROLYTES; PERFORMANCE; STABILITY; LA3NI2O7; SYSTEM; DEFECT;
D O I
10.1007/s10008-015-3047-9
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Phases constituted by La2-xCuxNiO4-delta (0.01 <= x <= 0.1) of the Ruddlesden-Popper family (Lan+1NinO3n+1; n=1) were prepared and then mixed with La4Ni3O10, in a weight ratio of 50:50 wt%, in order to be used as solid oxide fuel cell cathodes. ASR values relative to the symmetrical cells constituted by yttria-stabilized zirconia electrolyte and the following electrodes, La1.98Cu0.02NiO4+delta + La4Ni3O10 and La1.95Cu0.05NiO4+delta + La4Ni3O10, are of 11.8 Omega cm(2) at 650 degrees C for both and, respectively, of 3.5 and 2.9 Omega cm(2) at 750 degrees C. In the case of the second cell, the electrode material reacts with the electrolyte forming an insulating phase at the interface, contrarily to the first cell, which stability could be explained by the combination of low doping amounts of copper and the presence of La4Ni3O10 acting as a stabilizer of the material at high temperature.
引用
收藏
页码:911 / 920
页数:10
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