Effect of Infiltration of Barium Carbonate Nanoparticles on the Electrochemical Performance of La0.6Sr0.4Co0.2Fe0.8O3-δ Cathodes for Protonic Ceramic Fuel Cells

被引：9

作者：

Gao, Jun ^{[1
]}

Meng, Yuqing ^{[1
]}

Lee, Shiwoo ^{[2
,3
]}

Tong, Jianhua ^{[1
]}

Brinkman, Kyle S. ^{[1
,2
]}

机构：

[1] Clemson Univ, Dept Mat Sci & Engn, Clemson, SC 29634 USA

[2] US DOE, Natl Energy Technol Lab, 3610 Collins Ferry Rd,POB 880, Morgantown, WV 26507 USA

[3] AECOM, Morgantown, WV 26507 USA

来源：

JOM | 2019年 / 71卷 / 01期

关键词：

OXYGEN REDUCTION REACTION; NEXT-GENERATION; OXIDE;

D O I：

10.1007/s11837-018-3098-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

BaCO3 nanoparticles were infiltrated into a La0.6Sr0.4Co0.2Fe0.8O3- (LSCF) electrode as a synergistic catalyst to enhance the performance of proton conducting solid oxide fuel cells (H-SOFCs). Electrochemical impedance analysis showed that the polarization resistance was dramatically reduced by nearly 75% from 1.123cm(2) to 0.293cm(2) at 700 degrees C after infiltration of BaCO3 nanoparticles. The chemical stability between the BaCO3 and LSCF electrode was investigated by running a long-term 300-h test, during which the polarization resistance exhibited only minor degradation (2.22-2.20cm(2)). In addition, single cells with infiltrated LSCF electrode and BaCe0.7Zr0.1Y0.1Yb0.1O3- (BCZYYb) electrolyte yielded a maximum power density of 404mWcm(-2) at 700 degrees C, much higher than cells with a bare LSCF electrode (268mWcm(-2) at 700 degrees C). BaCO3 demonstrated promising performance enhancements of LSCF electrodes for H-SOFCs and warrants further development.

引用

页码：90 / 95

页数：6

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