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Preparation of nanocrystalline nickel oxide–yttria-stabilized zirconia composite powder by solution combustion with ignition of glycine fuel

Published online by Cambridge University Press:  31 January 2011

Sun-Jae Kim ,
Wonhee Lee ,
Won-Jun Lee ,
Soon Dong Park ,
Jae Sung Song  and
Eun Gu Lee
Sun-Jae Kim*
Affiliation:
Sejong Advanced Institute of Nano Technologies, Sejong University, 98, KunJa-Dong, KwangJin-Gu, Seoul 143–747, Korea
Wonhee Lee
Affiliation:
Sejong Advanced Institute of Nano Technologies, Sejong University, 98, KunJa-Dong, KwangJin-Gu, Seoul 143–747, Korea
Won-Jun Lee
Affiliation:
Sejong Advanced Institute of Nano Technologies, Sejong University, 98, KunJa-Dong, KwangJin-Gu, Seoul 143–747, Korea
Soon Dong Park
Affiliation:
Nuclear Materials Development Team, Korea Atomic Energy Research Institute, P.O. Box 105, Yusong, Taejon 305–600, Korea
Jae Sung Song
Affiliation:
Korea Electrotechnology Research Institute, Electronic and Magnetic Devices Group, 28–1, SungJu-Dong, ChangWon, Kyung Nam 641–120, Korea
Eun Gu Lee
Affiliation:
Department of Materials Engineering, Chosun University, Kwang Ju 501–759, Korea
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Nanocrystalline nickel oxide–yttrium-stabilized zirconia (NiO/YSZ) composite powder for the solid oxide fuel cells was prepared by solution combustion through control of pH values and contents of glycine fuel in precursor solution. A strongly acidic precursor solution with appropriate amounts of glycine fuel added increased the specific surface area of the synthesized composite powders. This results from the increased binding of metal ions and glycine under strongly acidic solution (pH = 0.5) conditions. After sintering and reducing treatment of nanocrystalline NiO/YSZ composite, the Ni/YSZ pellet showed an ideal microstructure: fine Ni particles of 3 to 5 μm were distributed uniformly, and fine micropores around Ni metal particles were formed, thus leading to an increase in the triple phase boundary area among gas, Ni and YSZ.

Type
Articles
Information
Journal of Materials Research , Volume 16 , Issue 12 , December 2001 , pp. 3621 - 3627
Copyright
Copyright © Materials Research Society 2001

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References

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