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Characteristics of SOFC Anode of Ni/YSZ Core-shell Manufactured Using sSpherical Ni and Nano YSZ Powders
Author(s) -
ByungHyun Choi,
Ja-Bin Koo,
Kwang-Hee Seol,
MiJung Ji
Publication year - 2017
Publication title -
journal of hydrogen and new energy
Language(s) - English
Resource type - Journals
eISSN - 2288-7407
pISSN - 1738-7264
DOI - 10.7316/khnes.2017.28.1.40
Subject(s) - materials science , yttria stabilized zirconia , anode , non blocking i/o , hydrogen , electrical resistivity and conductivity , shell (structure) , nano , chemical engineering , conductivity , nickel , analytical chemistry (journal) , metallurgy , composite material , electrode , chemistry , cubic zirconia , ceramic , catalysis , electrical engineering , biochemistry , organic chemistry , chromatography , engineering
Received 5 December, 2016 Revised 28 December, 2016 Accepted 28 February, 2017 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 μm Ni-YSZ core-shell was 3 times higher than that of 1.0 μm NiO or 1.0 μm Ni-YSZ. Hydrogen selectivity was similar at 800C, but hydrogen selectivity and methane conversion rate under 750C was 10~25% higher, Power density was more than 2 times, ASR was about 1/3, when exposed to H2 atmosphere at 750C for a long time, Ni particles did not have any growth or cut off conduction path.

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