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http://dx.doi.org/10.6111/JKCGCT.2010.20.6.289

Synthesis of Ni-YSZ cermets for SOFC by glycine nitrate process  

Lee, Tae-Suk (Department of Materials Engineering, Korea Maritime University)
Ko, Jung-Hoon (Department of Hydrogen and Fuel Cells Engineering, Specialized Graduate School, Chonbuk National University)
Kim, Bok-Hee (Department of Hydrogen and Fuel Cells Engineering, Specialized Graduate School, Chonbuk National University)
Publication Information
Journal of the Korean Crystal Growth and Crystal Technology / v.20, no.6, 2010 , pp. 289-294 More about this Journal
Abstract
Ni-YSZ (Yttria Stabilized Zirconia) composite powders for SOFC were fabricated by glycine nitrate process. $ZrO(NO_3)_2{\cdot}2H_2O$, $Y(NO_3)_3{\cdot}6H_2O$, $Ni(NO_3)_2{\cdot}6H_2O$ and glycine were chosen as the starting materials. The structural properties of the sintered Ni-YSZ cermets have been investigated with respect to the volume contents of Ni. A porous microstructure consisting of homogeneously distributed Ni and YSZ phases together with well-connected grains was observed. The sintered Ni-YSZ cermets showed a porous microstructure consists of homogeneously distributed Ni and YSZ phases and the grains were well-connected. It was found that the open porosity is sensitive to the volume content of Ni. The Ni-YSZ cermet containing 35 vol% Ni seems to be suitable for the electrode material of SOFC since it provides sufficient open porosity higher than 30%.
Keywords
Ni-YSZ; SOFC; powder synthesis; glycine nitrate process;
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