Nano Archive

Fabrication of NiO/YSZ anode material for SOFC via mixed NiO precursors

Han, Kyoung R. and Jeong, Younji and Lee, Haiwon and Kim, Chang-Sam (2007) Fabrication of NiO/YSZ anode material for SOFC via mixed NiO precursors. Materials Letters, 61 (4-5). 1242 - 1245.

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NiO/YSZ anode material with 45 wt.% NiO for SOFC was synthesized by surface-modification of YSZ powder with mixed nickel oxide precursors. YSZ was treated with acidic nickel nitrate and then followed by basic nickel carbonate. Such prepared NiO/YSZ precursor showed nano-size homogeneous mixture upon calcination at 800 °C. The mixture was ground and subjected to calcination at 1200 °C to give rise to agglomerate-free NiO/YSZ composite powder with particle size of 0.4–0.7 μm. The composite powder was analyzed by XRD, zetapotential measurements, and SEM. The composite powder produced the Ni/YSZ cermet of homogeneous microstructure with a rigid YSZ skeleton, porosity of 33%, and an electrical conductivity of 430 S/cm at 800–1000 °C, which is much higher than that ( 180 S/cm) prepared by a conventional mixed oxide process.

Item Type:Article
Subjects:Material Science > Nanofabrication processes and tools
Material Science > Nanostructured materials
ID Code:6759
Deposited By:SPI
Deposited On:09 Feb 2010 09:15
Last Modified:09 Feb 2010 09:15

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