Prediction of Mechanical and Electrical Properties of NiO-YSZ Anode Support for SOFC from Quantitative Analysis of Its Microstructure

WANDIWAHYUDI; MUHAMMADSHIRJEELKHAN; RAK-HYUNSONG; JONG-WON LEE; TAK-HYOUNG LIM; SEOK-JOO PARK; SEUNG-BOK LEE

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자료유형: 학술저널

저자정보: WANDIWAHYUDI MUHAMMADSHIRJEELKHAN RAK-HYUNSONG JONG-WON LEE TAK-HYOUNG LIM SEOK-JOO PARK SEUNG-BOK LEE

저널정보: 한국수소및신에너지학회 한국수소및신에너지학회논문집 한국수소 및 신에너지학회 논문집 제28권 제5호

발행연도: 2017.10

수록면: 521 - 530 (10page)

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Improving the microstructure of NiO/YSZ is one of several approaches used to enhance the electrical and mechanical properties of an anode support in Solid Oxide Fuel Cells (SOFCs). The aim of the work reported in this paper was to predict the relationship between these microstructural changes and the resulting properties. To this end, modification of the anode microstructure was carried out using different sizes of Poly (Methyl Methacrylate) (PMMA) beads as a pore former. The electrical conductivity and mechanical strength of these samples were measured using four-probe DC, and three-point bend-test methods, respectively. Thermal etching followed by high resolution SEM imaging was performed for sintered samples to distinguish between the three phases (NiO, YSZ, and pores). Recently developed image analysis techniques were modified and used to calculate the porosity and the contiguity of different phases of the anode support. Image analysis results were verified by comparison with the porosity values determined from mercury porosimetry measurements. Contiguity of the three phases was then compared with data from electrical and mechanical measurements. A linear relationship was obtained between the contiguity data determined from image analysis, and the electrical and mechanical properties found experimentally. Based upon these relationships we can predict the electrical and mechanical properties of SOFC support from the SEM images.

#고체산화물연료전지 #기계적 특성 #연료전지 #이미지 분석 #전기적 특성 #Electrical property #Fuel cells #Image analysis #Mechanical property #SOFC

참고문헌 (17)

참고문헌 신청

T. Talebi / 2010 / Investigation on microstructures of NiO-YSZ composite and Ni-YSZ cermet for SOFCs / Int. J. Hydrogen Energy 35:9440~9447

N. Vivet / 2011 / Effect of Ni content in SOFC Ni-YSZ cermet : A three-dimensional study by FIB-SEM tomography / J. Power Sources 196:9989~9997

완디와휴디 / 2013 / 미세조직 정량 분석을 통한 고체산화물 연료전지용 NiO-YSZ 연료극 전기전도도 예측 / 한국수소및신에너지학회논문집 24(3):237~241

B. R. Roy / 2009 / Mechanical properties of micro-tubular solid oxide fuel cell anodes / J. Power Sources 188:220~224

L. Mingyi / 2010 / Influence of pore formers on physical properties and microstructures of supporting cathodes of solid oxide electrolysis cells / Int. J. Hydrogen Energy 35:2670~2674

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