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http://dx.doi.org/10.7316/KHNES.2017.28.1.40

Characteristics of SOFC Anode of Ni/YSZ Core-shell Manufactured Using sSpherical Ni and Nano YSZ Powders  

Choi, Byung-Hyun (Energy Material Center, Korea Institute of Ceramics Engineering & Technology)
Koo, Ja-Bin (Energy Material Center, Korea Institute of Ceramics Engineering & Technology)
Seol, Kwang-Hee (Energy Material Center, Korea Institute of Ceramics Engineering & Technology)
Ji, Mi-Jung (Energy Material Center, Korea Institute of Ceramics Engineering & Technology)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.28, no.1, 2017 , pp. 40-46 More about this Journal
Abstract
We reviewed the electrical properties of SOFC anode manufactured using spherical Ni and nano YSZ powder. When core-shell is fabricated by using submicron Ni as core and nano-sized YSZ as shell for SOFC anode, the electrical conductivity of the $0.2{\mu}m$ Ni-YSZ core-shell was 3 times higher than that of $1.0{\mu}m$ NiO or $1.0{\mu}m$ Ni-YSZ. Hydrogen selectivity was similar at $800^{\circ}C$, but hydrogen selectivity and methane conversion rate under $750^{\circ}C$ was 10~25% higher, Power density was more than 2 times, ASR was about 1/3, when exposed to $H_2$ atmosphere at $750^{\circ}C$ for a long time, Ni particles did not have any growth or cut off conduction path.
Keywords
Soild Oxide Fuel Cell; Ni-YSZ Core-shell; Mechano-fusion; Surfactant; Hydrogen selectivity; Methane conversion ratio; Electrical conducivity; Power density; Ohmic resistance;
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Times Cited By KSCI : 1  (Citation Analysis)
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