Electrocatalytic performance enhancement of La0.6Sr0.4Co0.2Fe0.8O3-δ-Y2O3 stabilized ZrO2 cathodes prepared by an impregnation technique

被引：8

作者：

Chen, Jing ^{[1
,2
]}

Liu, Yihui ^{[1
]}

Chi, Bo ^{[1
]}

Pu, Jian ^{[1
]}

Li, Jian ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Ctr Fuel Cell Innovat, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Hubei, Peoples R China

[2] Henan Univ Technol, Sch Chem & Chem Engn, Zhengzhou 450001, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2014年 / 256卷

基金：

中国国家自然科学基金;

关键词：

Cathodes; Impregnation; Loading; Surfactants; Electrocatalytic performance; OXIDE FUEL-CELLS; SOFC CATHODES; TEMPERATURE; POLARIZATION; PALLADIUM;

D O I：

10.1016/j.jpowsour.2014.01.081

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：

The electrocatalytic performance of the oxygen-reduction reaction of La0.6Sr0.4Co0.2Fe0.8O3-delta (LSCF) -Y2O3 stabilized ZrO2 (YSZ) cathodes prepared by an impregnation technique has been investigated as cathodes for intermediate temperature solid oxide fuel cells. The electrocatalytic activity of LSCF-YSZ cathodes increases with the introduction of LSCF phases to the YSZ scaffold. The introduction of surfactants into LSCF-precursor solutions during preparation has a great effect on the microstructure and electrochemical performance of LSCF-YSZ composite cathodes. N-ethyl-perfluoyooctylsulfonamide (DF10) is a type of commonly used nonionic flusurfactant which affects the LSCF particles' morphology on the YSZ scaffold. Using N-ethyl-perfluoyooctylsulfonamide (DF10) acetylacetone during the preparation of LSCF-YSZ composite cathodes decreases the electrode polarization resistance (R-e) of cathodes from 0.45 to 0.18 Omega cm(2). We obtained a notable improvement in the electrochemical performance of LSCF-YSZ-composite cathodes with uniform and continuous LSCF particle distribution on the surface of YSZ scaffold. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：312 / 318

页数：7