Synthesis of metal and ceramic composite particles for fuel cell electrodes

被引:12
作者
Fukui, T
Ohara, S
Okawa, H
Naito, M
Nogi, K
机构
[1] Japan Fine Ceram Ctr, Mat Res & Dev Lab, Atsuta Ku, Nagoya, Aichi 4568587, Japan
[2] Osaka Univ, JWRI, Osaka 5670047, Japan
关键词
chemical properties; composite particle; fuel cells; mechanical coating; NiO;
D O I
10.1016/S0955-2219(03)00296-6
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Metal and ceramic (CoO/Ni and MgFe2O4/Ni) composite particles for molten carbonate fuel cell (MCFC) cathodes were prepared from filament shaped Ni particles by a mechanical coating technique using a new vessel type mixer named the Theta composer. The morphology of the composite particles consisted of a Ni grain coated with fine ceramic particles without changing the filament structure. Moreover, a CoO/NiO composite cathode and a MgFe2O4/NiO composite cathode were successfully fabricated from the composite particles by a doctor blade tape casting method. The composite cathode had good porous structure with high porosity. It suggests that the composite cathode can be applied as practical large area cathodes. Ni solubility of the CoO/NiO composite cathode and MgFe2O4/NiO composite cathode into a (Li0.52Na0.48)(2)CO3 melt at 650 degreesC in 10%CO2-7%O-2-83%N-2 at 1.2 MPa were about half and one-quarter of that of NiO, respectively. Therefore, the composite cathode is a promising candidate for a new cathode of MCFCs because of its high stability in molten carbonate and good porous structure. (C) 2003 Elsevier Ltd. All rights reserved.
引用
收藏
页码:2835 / 2840
页数:6
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