Browse > Article
http://dx.doi.org/10.7316/KHNES.2017.28.5.521

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

WAHYUDI, WANDI (Fuel Cell Research Center, KIER)
KHAN, MUHAMMAD SHIRJEEL (Fuel Cell Research Center, KIER)
SONG, RAK-HYUN (Fuel Cell Research Center, KIER)
LEE, JONG-WON (Fuel Cell Research Center, KIER)
LIM, TAK-HYOUNG (Fuel Cell Research Center, KIER)
PARK, SEOK-JOO (Fuel Cell Research Center, KIER)
LEE, SEUNG-BOK (Fuel Cell Research Center, KIER)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.28, no.5, 2017 , pp. 521-530 More about this Journal
Abstract
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.
Keywords
Fuel cells; Electrical property; Mechanical property; Image analysis; SOFC;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 T. Talebi, M. H. Sarrafi, M. Haji, B. Raissi, and A. Maghsoudipour, "Investigation on microstructures of NiO-YSZ composite and Ni-YSZ cermet for SOFCs", Int. J. Hydrogen Energy, Vol. 35, 2010, pp. 9440-9447.   DOI
2 J. H. Lee, H. Moon, H.W. Lee, J. Kim, J. D. Kim, and K. H. Yoon, "Quantitative analysis of microstructure and its related electrical property of SOFC anode, Ni-YSZ cermet", Solid State Ionics, Vol. 148, 2002, pp. 15-26.   DOI
3 K. R. Lee, S. H. Choi, J. Kim, H. W. Lee, and J. H. Lee, "Viable image analyzing method to characterize the microstructure and the properties of the Ni/YSZ cermet anode of SOFC", J. Power Sources, Vol. 140, 2005, pp. 226-234.   DOI
4 J. Y. Hu, Z. Lv, K. F. Chena, X. Q. Huang, N. Ai, X. B. Du, C. Fu, J. Wang, and W. Su, "Effect of composite pore-former on the fabrication and performance of anode-supported membranes for SOFCs", J. Membr. Sci., Vol. 318, 2008, pp. 445-451.   DOI
5 D. Simwonis, F. Tietz, and D. Stover, "Nickel coarsening in annealed Ni-8YSZ anode substrate for solid oxide fuel cells", Solid State Ionics, Vol. 132, 2000, pp. 241-251.   DOI
6 S. Singhal and K. Kendall, "High-Temperature Solid Oxide Fuel Cells: Fundamentals, Design and Applications", Elsevier Advanced Technology, Oxford, UK, 2003.
7 W. Weibull, "A statistical theory of the strength of materials", IVB-Handl., 1939.
8 T. Hatae, Y. Matsuzaki, S. Yamashita, and Y. Yamazaki, "Current density dependence of change in the microstructure of SOFC anodes during electrochemical oxidation", Solid State Ionics. Vol. 180, 2009, pp. 1305-1310.   DOI
9 J. M. Villora, P. Callejas, M. F. Barba, and C. Baudin, "Statistical analysis of the fracture behavior of porous ceramic Rasching rings", J. Eur. Ceram. Soc., Vol. 24, 2004, pp. 589-594.   DOI
10 N. Vivet, S. Chupin, E. Estrade, A. Richard, S. Bonnamy, D. Rochais, and E. Bruneton, "Effect of Ni content in SOFC Ni-YSZ cermet: A three-dimensional study by FIB-SEM tomography", J. Power Sources, Vol. 196, 2011, pp. 9989-9997.   DOI
11 W. Wahyud, B. Ahmed, S. B. Lee, R. H. Song, J. W. Lee, T. H. Lim, and S. J. Park, "Quantitative Microstructure Analysis to Predict Electrical Property of NiO-YSZ Anode Support for SOFCs", Trans. of the Korean Hydrogen and New Energy Society, Vol. 24, 2013, pp. 237-241.   DOI
12 B. R. Roy, N. M. Sammes, T. Suzuki, Y. Funahashi, and M. Awano, "Mechanical properties of micro-tubular solid oxide fuel cell anodes", J. Power Sources, Vol. 188, 2009, pp. 220-224.   DOI
13 L. Mingyi, Y. Bo, X. Jingming, and C. Jing, "Influence of pore formers on physical properties and microstructures of supporting cathodes of solid oxide electrolysis cells", Int. J. Hydrogen Energy, Vol. 35, 2010, pp. 2670-2674.   DOI
14 J. H. Lee, J. W. Heo, D. S. Lee, J. Kim, G. H. Kim, H. W. Lee, H. S. Song, and J. H. Moon, "The impact of anode microstructure on the power generating characteristic of SOFC", Solid State Ionics, Vol. 158, 2003, pp. 225-232.   DOI
15 M. H. Pihlatie, A. Kaiser, M. Mogensen, and M. Chen, "Electrical conductivity of Ni-YSZ composite: Degradation due to Ni particle growth", Solid State Ionics, Vol. 189, 2011, pp. 82-90.   DOI
16 P. Plonczak, M. Gazda, B. Kusz, and P. Jasinski, "Fabrication of solid oxide fuel cell supported on specially performed ferrite-based perovskite cathode", J. Power Sources, Vol. 181, 2008, pp. 1-7.   DOI
17 D. S. Lee, J. H. Lee, J. Kim, H.W Lee, and H. S. Song, "Tuning of the microstructure and electrical properties of SOFC anode via compaction pressure control during forming", Solid State Ionics, Vol. 166, 2004, p. 13.   DOI