Nanofiber-based composite cathodes for intermediate temperature solid oxide fuel cells

被引：48

作者：

Ahn, Minwoo ^{[1
]}

Lee, Jongseo ^{[1
]}

Lee, Wonyoung ^{[1
]}

机构：

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

来源：

JOURNAL OF POWER SOURCES | 2017年 / 353卷

基金：

新加坡国家研究基金会;

关键词：

Solid oxide fuel cells; Electrode; Nanofibers; Adhesion; Surface area; Low sintering temperature; ELECTROSPUN LA0.6SR0.4CO0.2FE0.8O3-DELTA-GD0.1CE0.9O1.95 CATHODE; SM0.5SR0.5COO3-DELTA CATHODE; PERFORMANCE EVALUATION; KINETICS; SOFCS; MICROSTRUCTURE; ELECTROLYTE; CONDUCTORS; DEPOSITION; EXCHANGE;

D O I：

10.1016/j.jpowsour.2017.03.151

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 demonstrate the Sm0.5Sr0.5CoO3-delta (SSC) nanofiber-based composite cathodes for intermediate temperature solid oxide fuel cells (IT-SOFCs), showing a cathode area-specific resistance (ASR) value of 0.024 Omega cm(2) at 650 degrees C. The hollow and porous SSC nanofiber layer, fabricated by electrospinning, is sintered at low temperatures to preserve the high specific surface area for facile oxygen surface exchange reactions. The low sintering temperature is enabled by additional SSC powder layer, providing sufficient adhesion between the electrolyte and the nanofiber layer. Our results can provide a design guideline to fully utilize the nanostructured electrodes by engineering the structural properties of the surface and the interface, and hence high-performance IT-SOFCs can be achieved by structural modification with conventional materials. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：176 / 182

页数：7

共 44 条

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