Impregnated nickel anodes for reduced-temperature solid oxide fuel cells based on thin electrolytes of doped LaGaO3

被引：35

作者：

Liu, Xuejiao ^{[1
]}

Meng, Xie ^{[1
]}

Han, Da ^{[1
]}

Wu, Hao ^{[1
]}

Zeng, Fanrong ^{[1
]}

Zhan, Zhongliang ^{[1
]}

机构：

[1] Chinese Acad Sci SICCAS, CAS Key Lab Mat Energy Convers, Shanghai Inst Ceram, Shanghai 200050, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2013年 / 222卷

基金：

美国国家科学基金会;

关键词：

Nickel anode; Impregnation; Nanostructure; Reduced-temperature solid oxide fuel cells; Strontium- and magnesium-doped lanthanum gallate; LANTHANUM GALLATE; POWER-DENSITY; LSGM; PERFORMANCE; SOFC; STRONTIUM;

D O I：

10.1016/j.jpowsour.2012.08.019

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：

Highly active NI-cermet anodes for thin La0.9Sr0.1Ga0.8Sr0.2O3-delta (LSGM) electrolyte solid oxide fuel cells are fabricated by impregnating aqueous nickel nitrate solutions into porous LSGM backbones, followed by calcinations at 700 degrees C. High Ni loadings, e.g., V-Ni = 7.9%, are mandatory for obtaining well-interconnected Ni coatings on the internal surfaces of the supporting LSGM structures, where good chemical compatibility is confirmed by the X-Ray diffraction patterns. The polarization resistances are impressively low for the V-Ni = 7.9% anodes in humidified hydrogen, ranging from 0.008 Omega cm(2) at 650 degrees C to 0.011 Omega cm(2) at 550 degrees C. Thin LSGM electrolyte fuel cells, impregnated with Ni anodes and Sm0.5Sr0.5CoO3-delta-Ce0.8Sm0.2O1.9 (SSC - SDC) cathodes, exhibit superior power densities at reduced temperatures, e.g., 1.60 and 1.05 W cm(-2) at 650 and 550 degrees C, respectively. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：92 / 96

页数：5

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