Title(Kor) 미세조직 정량 분석을 통한 고체산화물연료전지용 NiO-YSZ 연료극 지지체의 기계적/전기적 성능 예측
Title(Eng) Prediction of Mechanical and Electrical Properties of NiO-YSZ Anode Support for SOFC from Quantitative Analysis of Its Microstructure
Keyword Fuel cells(연료전지), Electrical property(전기적 특성), Mechanical property (기계적 특성), Image analysis(이미지 분석), SOFC(고체산화물연료전지)
Author(Kor) 완디 와휴디1,2⋅무하마드 샤질 칸1,2⋅송락현1,2⋅이종원1,2⋅임탁형1,2⋅박석주1,2⋅이승복1,2,†
Author(Eng) WANDI WAHYUDI1,2, MUHAMMAD SHIRJEEL KHAN1,2, RAK-HYUN SONG1,2, JONG-WON LEE1,2, TAK-HYOUNG LIM1,2, SEOK-JOO PARK1,2, SEUNG-BOK LEE1,2,†
Date 2017-10
Attach file 12-17-09-08(이승복)-521.pdf
Page Page. 521-530
Abstract(Kor)
Abstract(Eng)
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.



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