Further improvement in performances of La0.6Sr0.4Co0.2Fe0.8O3-δ - doped ceria composite oxygen electrodes with infiltrated doped ceria nanoparticles for reversible solid oxide cells

被引:35
作者
Brito, Manuel E. [1 ]
Morishita, Hiroki [2 ]
Yamada, Junya [2 ]
Nishino, Hanako [3 ]
Uchida, Hiroyuki [1 ,3 ]
机构
[1] Univ Yamanashi, Clean Energy Res Ctr, Takeda 4, Kofu, Yamanashi 4008510, Japan
[2] Univ Yamanashi, Dept Appl Chem, Fac Engn, Takeda 4, Kofu, Yamanashi 4008510, Japan
[3] Univ Yamanashi, Fuel Cell Nanomat Ctr, Takeda 4, Kofu, Yamanashi 4008510, Japan
基金
日本科学技术振兴机构;
关键词
Oxygen electrode; Reversible solid oxide cells; Nanoparticles infiltration; Samaria-doped ceria; Lanthanum strontium cobalt ferrite; FUEL-CELLS; ELECTROCHEMICAL PERFORMANCE; SDC INTERLAYER; CATHODE; ELECTROLYSIS; DEGRADATION; PROTON;
D O I
10.1016/j.jpowsour.2019.04.066
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
We have developed high-performance oxygen electrodes for reversible solid oxide cells. La0.6Sr0.4Co0.2Fe0.8O3-delta (LSCF) center dot (CeO2)(0.8)(SmO1.5)(0.2) (SDC) composite scaffolds were infiltrated with SDC nanoparticles. The electrode with 30 vol% load of SDC nanoparticles exhibited very low overpotentials, eta <= 0.010 V for anodic and vertical bar eta vertical bar <= 0.030 V for cathodic reactions at 0.7 A cm(-2) and 800 degrees C, which was ascribed to a noticeable increase in the exchange current densities. The electrodes have shown very stable performance under anodic oxygen evolution operation at -0.5 A cm(-2) and 750 degrees C for 400 h. Such electrodes developed are extremely promising oxygen electrodes for R-SOC ever reported.
引用
收藏
页码:293 / 298
页数:6
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