High-performance Ni nanocomposite anode fabricated from Gd-doped ceria nanocubes for low-temperature solid-oxide fuel cells

被引：39

作者：

Yamamoto, Kazuhiro ^{[1
]}

Hashishin, Takeshi ^{[1
]}

Matsuda, Motohide ^{[2
]}

Qiu, Nan ^{[1
]}

Tan, Zhenquan ^{[1
]}

Ohara, Satoshi ^{[1
]}

机构：

[1] Osaka Univ, Joining & Welding Res Inst, Ibaraki, Osaka 5670047, Japan

[2] Kumamoto Univ, Grad Sch Sci & Technol, Chuo Ku, Kumamoto 8608555, Japan

来源：

NANO ENERGY | 2014年 / 6卷

基金：

日本科学技术振兴机构;

关键词：

Ceria; SOFCs; Hybrid materials; Nanocrystals; Aero-sol; Microstructures; LANTHANUM GALLATE ELECTROLYTE; CERMET ANODE; CATHODE; SOFC; FILM; MICROSTRUCTURE; NANOCRYSTALS;

D O I：

10.1016/j.nanoen.2014.03.007

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：

Gadolinium-doped ceria (GDC) nanocubes with highly reactive {001) facets were synthesized as an anode material for solid-oxide fuel cells by organic-ligand-assisted hydrothermal treatment with a water-soluble amino acid, 6-amino hexanoic acid (AHA). An aerosol technique was applied to fabricate a NiO-GDC nanocube composite with water as a green solvent. The NiO-GDC nanocube composite was easily sintered even at a temperature of 1100 degrees C, while the conventional NiO-GDC composite covered with the most stable {1 1 1) facets was sintered at 1300 degrees C. Sintering at such a low temperature inhibited undesirable coarsening of NiO and GDC particles, resulting in an enlarged, triple-phase boundary (TPB). The NiO-GDC nanocube composite anode with the enlarged TPB exhibited a rather low area specific resistance of 0.14 Omega cm(2) compared with the conventional NiO-GDC composite anode's resistance of 0.58 Omega cm(2) when operated at 600 degrees C. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：103 / 108

页数：6

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