Nano-granulization of gadolinia-doped ceria electrolyte surface by aerosol-assisted chemical vapor deposition for low-temperature solid oxide fuel cells

被引：22
|
作者：
Kim, Jun Woo [1 ]
Jang, Dong Young [1 ]
Kim, Manjin [1 ]
Choi, Hyung Jong [1 ]
Shim, Joon Hyung [1 ]
机构：
[1] Korea Univ, Sch Mech Engn, Seoul 136713, South Korea
来源：
JOURNAL OF POWER SOURCES | 2016年 / 301卷
基金：
新加坡国家研究基金会;
关键词：
Solid oxide fuel cells; Aerosol-assisted chemical vapor deposition; Gadolinia-doped ceria; Surface modification; Grain boundaries; Ceramic thin films; YTTRIA-STABILIZED ZIRCONIA; THIN-FILM ELECTROLYTE; GRAIN-BOUNDARIES; PERFORMANCE; EXCHANGE; GROWTH; LAYERS; SOFC;
D O I：
10.1016/j.jpowsour.2015.09.098
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：
We have fabricated nano-scale gadolinia-doped ceria (GDC) at the electrode-electrolyte boundary by aerosol-assisted chemical vapor deposition (AACVD) for high-performance solid oxide fuel cells (SOFCs) working at low temperatures below 500 degrees C. In AACVD, temperature is the key factor affecting the grain size. We have confirmed that by nano-granulizing the electrolyte surface using optimized AACVD, the power output of the SOFC is 50% higher than that of the bare GDC SOFC. From the impedance analysis, significant enhancement of the cathodic oxygen reduction reaction is identified from the AACVD-GDC nano-grain surface treatment. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：72 / 77
页数：6
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