Single-chamber fabrication of high-performance low-temperature solid oxide fuel cells with grain-controlled functional layers

被引:20
|
作者
Hong, Soonwook [1 ]
Lim, Yonghyun [1 ]
Yang, Hwichul [1 ]
Bae, Jiwoong [1 ]
Kim, Young-Beom [1 ,2 ]
机构
[1] Hanyang Univ, Dept Mech Convergence Engn, 222 Wangsimni Ro, Seoul 133791, South Korea
[2] Hanyang Univ, Inst Nanosci & Technol, 222 Wangsimni Ro, Seoul 133791, South Korea
基金
新加坡国家研究基金会;
关键词
YTTRIA-STABILIZED ZIRCONIA; ELECTROLYTE; DEPOSITION; EXCHANGE; FILMS;
D O I
10.1039/c6ta07237b
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
A one-step process has been developed for the fabrication of thin film membrane-electrode assemblies with multi-layer electrolytes for use in high-performance, low-temperature solid oxide fuel cells (LT-SOFCs). By controlling the sputter processing conditions, a dense yttria-stabilized zirconia (YSZ) electrolyte film was fabricated onto a porous aluminum oxide (AAO) anodic substrate. Thin, grain-controlled layers (GCLs) were subsequently formed at the cathodic interface to provide a homogeneous functional layer, which significantly enhanced the kinetics of the oxygen reduction reaction (ORR). This is attributed to the fine grains and increased grain boundary density of this layer, which were achieved without thermal annealing. Using this new device architecture, the fuel cell was able to reach a peak power density of 343 mW cm(-2) at 450 degrees C.
引用
收藏
页码:2029 / 2036
页数:8
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