共 34 条
High thermal stability of three-dimensionally ordered nano-composite cathodes for solid oxide fuel cells
被引:7
作者:

Li, Juan
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机构:
Chinese Acad Sci, Shenzhen Inst Adv Technol, Elect Vehicle Res & Dev Ctr, Shenzhen 518055, Peoples R China
Harbin Inst Technol, Acad Fundamental & Interdisciplinary Sci, Harbin 150001, Peoples R China Chinese Acad Sci, Shenzhen Inst Adv Technol, Elect Vehicle Res & Dev Ctr, Shenzhen 518055, Peoples R China

Zhang, Naiqing
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机构:
Harbin Inst Technol, Acad Fundamental & Interdisciplinary Sci, Harbin 150001, Peoples R China Chinese Acad Sci, Shenzhen Inst Adv Technol, Elect Vehicle Res & Dev Ctr, Shenzhen 518055, Peoples R China

Sun, Kening
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Harbin Inst Technol, Acad Fundamental & Interdisciplinary Sci, Harbin 150001, Peoples R China Chinese Acad Sci, Shenzhen Inst Adv Technol, Elect Vehicle Res & Dev Ctr, Shenzhen 518055, Peoples R China

Wu, Zhengbin
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Chinese Acad Sci, Shenzhen Inst Adv Technol, Elect Vehicle Res & Dev Ctr, Shenzhen 518055, Peoples R China Chinese Acad Sci, Shenzhen Inst Adv Technol, Elect Vehicle Res & Dev Ctr, Shenzhen 518055, Peoples R China
机构:
[1] Chinese Acad Sci, Shenzhen Inst Adv Technol, Elect Vehicle Res & Dev Ctr, Shenzhen 518055, Peoples R China
[2] Harbin Inst Technol, Acad Fundamental & Interdisciplinary Sci, Harbin 150001, Peoples R China
关键词:
Solid oxide fuel cells;
Three-dimensionally ordered architecture;
Silica opal;
Thermal stability;
Oxygen reduction reaction kinetics;
PERFORMANCE;
FABRICATION;
ELECTRODES;
REDUCTION;
CO;
D O I:
10.1016/j.electacta.2015.11.063
中图分类号:
O646 [电化学、电解、磁化学];
学科分类号:
081704 ;
摘要:
A non-close-packed (NCP) silica opal connected by cylindrical rods was prepared using a selective etching technique. Using sol-gel impregnation of the NCP silica opal template, La0.8Sr0.2MnO3/Zr0.84Y0.16O2 (LSM/YSZ) composite cathodes were fabricated for solid oxide fuel cells. The microstructure of the as-prepared cathode revealed three-dimensionally (3D) ordered hollow spheres connected by cylindrical tubes. Even after high-temperature sintering at 1000 degrees C, the 3D ordered nano-network remained stable. Electrochemical impedance spectroscopy was used to study the oxygen reduction reaction kinetics of the 3D ordered LSM/YSZ electrode. The impedance behavior was similar to that of a mixed ionic-electronic conductor, different from the behavior of traditional micro-scaled LSM/YSZ electrodes. The nanometer-scale particle size and continuous nano-network are the main reasons for this divergence in behavior. (C) 2015 Elsevier Ltd. All rights reserved.
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页码:179 / 185
页数:7
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