Enhanced charge transfer with Ag grids at electrolyte/electrode interfaces in solid oxide fuel cells

被引：23

作者：

Choi, Mingi ^{[1
]}

Hwang, Sangyeon ^{[1
]}

Byun, Doyoung ^{[1
]}

Lee, Wonyoung ^{[1
]}

机构：

[1] Sungkyunkwan Univ, Dept Mech Engn, Seoul, South Korea

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2016年 / 4卷 / 12期

基金：

新加坡国家研究基金会;

关键词：

OXYGEN REDUCTION; ELECTROCHEMICAL PERFORMANCE; POLARIZATION RESISTANCE; COMPOSITE CATHODES; TEMPERATURE; ELECTRODES; IMPEDANCE; MICROSTRUCTURE; EXCHANGE; SOFCS;

D O I：

10.1039/c5ta09778a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

We systematically investigated the effect of Ag grids at the electrolyte/electrode interfaces on the electrochemical performance of solid oxide fuel cells (SOFCs). Electrohydrodynamic jet printing was employed to fabricate Ag grids with a precise control of the geometry. A substantial reduction in the polarization resistance was observed when the pitch of the Ag grids decreased from 400 to 50 mm, indicating enhanced charge transfer through efficient supply and distribution of electrons along the Ag grids at the electrolyte/electrode interfaces. Our results demonstrate the possibility of engineering interfaces with metallic grids to achieve enhanced electrochemical performances for SOFCs operating at intermediate temperatures.

引用

页码：4420 / 4424

页数：5

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