A Ce/Ru Codoped SrFeO3-δ Perovskite for a Coke-Resistant Anode of a Symmetrical Solid Oxide Fuel Cell

被引：87
作者：
Li, Bangxin [1 ]
He, Shuai [2 ]
Li, Jibiao [3 ,4 ,5 ]
Yue, Xiangling [2 ]
Irvine, John T. S. [1 ,2 ]
Xie, Deti [1 ,6 ]
Ni, Jiupai [1 ,6 ]
Ni, Chengsheng [1 ,6 ]
机构：
[1] Southwest Univ, Coll Resources & Environm, Chongqing 400716, Peoples R China
[2] Univ St Andrews, Sch Chem, St Andrews KY16 9ST, Fife, Scotland
[3] Yangtze Normal Univ, Ctr Mat & Energy CME, Chongqing 408100, Peoples R China
[4] Yangtze Normal Univ, Chongqing Key Lab Extraordinary Bond Engn & Adv M, Chongqing 408100, Peoples R China
[5] Southwest Univ, Inst Clean Energy & Adv Mat, Chongqing 400715, Peoples R China
[6] Natl Base Int S&T Collaborat Water Environm Monit, Chongqing 400716, Peoples R China
来源：
ACS CATALYSIS | 2020年 / 10卷 / 24期
关键词：
ceria; propane; coke resistance; metal exsolution; oxide anode; carbonaceous fuel; catalysis; solid oxide fuel cell (SOFC); ELECTROCHEMICAL PERFORMANCE; ELECTRODE MATERIALS; STRONTIUM FERRITES; TOLERANT ANODE; NANOPARTICLES; STABILITY; CATALYST;
D O I：
10.1021/acscatal.0c03554
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：
Employment of identical oxides for the cathode and anode in a symmetrical solid oxide fuel cell (SSOFC) is beneficial for decreasing the fabrication costs of a robust cell. Ce doping on the A site of SrFeO3 increased the structural stability in a reducing atmosphere, but ceria was found to exsolve from the perovskite during the cooling process in the air if the doping level reached 20 atom %. The additional doping of 5 atom % Ru in Sr0.8Ce0.2FeO3 on the Fe site could prevent the ceria segregation in air and induce the surface decomposition under fuel conditions for the formation of nanoscale SrO, CeO2, and Ru-0. The SSOFC with Ce/Ru codoped SrFeO3 on a Sr- and Mg-doped LaGaO3 electrolyte showed a small R-p value (0.12 Omega cm(2)) when H-2 and ambient air were used as fuel and oxidant, respectively. The peak power densities of 846 and 310 mW cm(-2) were achieved at 800 degrees C using H-2 and C3H8 as fuel, respectively. The excellent coke resistance of the anode could be related to the simultaneous in situ exsolution of CeO2, SrO, and Ru-0 nanoparticles.
引用
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页码：14398 / 14409
页数：12
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