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http://dx.doi.org/10.7316/KHNES.2013.24.3.237

Quantitative Microstructure Analysis to Predict Electrical Property of NiO-YSZ Anode Support for SOFCs  

Wahyudi, Wandi (Department of Advanced Energy Technology, University of Science and Technology)
Ahmed, Bilal (Department of Advanced Energy Technology, University of Science and Technology)
Lee, Seung-Bok (Department of Advanced Energy Technology, University of Science and Technology)
Song, Rak-Hyun (Department of Advanced Energy Technology, University of Science and Technology)
Lee, Jong-Won (Department of Advanced Energy Technology, University of Science and Technology)
Lim, Tak-Hyoung (Fuel Cell Research Center, Korea Institute of Energy Research)
Park, Seok-Joo (Fuel Cell Research Center, Korea Institute of Energy Research)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.24, no.3, 2013 , pp. 237-241 More about this Journal
Abstract
The correlation between NiO-YSZ microstructure and its electrical property used for SOFC anode was critically evaluated with image processing and direct measurement techniques. These innovative processing techniques were employed to quantify the contiguity of the anode constituent phase. The calculated contiguities were then correlated with electrical conductivity attained from 4-probe DC method. This investigation described that contiguity of nickel oxide phases of an anode has a linear relationship with its electrical conductivity. We observed that the contiguity of NiO increased from 0.18 to 0.50 then electrical conductivity attained was significantly increased from 520 S/cm to 1468 S/cm at $900^{\circ}C$.
Keywords
SOFC; Microstructure; Anode; NiO-YSZ; Contiguity; PMMA;
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