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http://dx.doi.org/10.4313/JKEM.2014.27.12.866

Porosity Control in LSM Electrode Formation in Layered Plannar SOFC Module  

Lee, Won-Jun (Department of Materials Engineering, Inha University)
Yeo, Dong-Hun (Korea Institute of Ceramic Engineering & Technology, Engineering Ceramic Team)
Shin, Hyo-Soon (Korea Institute of Ceramic Engineering & Technology, Engineering Ceramic Team)
Jeong, Dea-Yong (Department of Materials Engineering, Inha University)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.27, no.12, 2014 , pp. 866-870 More about this Journal
Abstract
In solid oxide fuel cell system, yttria-stabilized zirconia is generally adopted as the electrolyte, which has high strength and superior oxygen ion conductivity, and the air electrode and the fuel electrode are attached to this. Recently, new structure of 'layered planar SOFC module' was suggested to solve the reliability problem due to the high temperature stability of a sealing agent and a binding material. In this study to materialize the air electrode in a layered planar SOFC module, the LSM ink was coated to form homogeneous electrode in the channel after the ink preparation. As the porosity control agent, PMMA or active carbon powder was adopted with use of a commercial dispersant in ethanol. The optimal amounts of both the porosity control agents and the dispersant were determined. Four (4) vol% of the dispersant for the LSM-PMMA case and 15 vol% for LSM-carbon powder showed the lowest viscosities respectively to indicate the best dispersed states of the slurries. With PMMA and carbon powder, sintered LSM ink shows the relatively homogeneous distributions of pores and with increases of the agents, the porosities increased in both cases. From this, it can be thought that the amount of the PMMA or carbon powder could be used to control the porosity of the LSM ink.
Keywords
Solid oxide fuel cell (SOFC); Layered planar type; LSM ink; PMMA; Carbon;
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1 J. S. Ji, C. H. Kim, Y. Kang, and K. S. Sim, Korean Chem. Eng. Res., 43, 627 (2005).
2 S. C. Singhal, J. Kor. Ceram. Soc., 42, 777 (2006).
3 S. Kakac, A. Pramuanjaroenkij, and X. Y. Zhou, Int. J. Hydrogen Energ., 32, 761 (2007).   DOI   ScienceOn
4 J. W. Moon, G. D. Kim, K. T. Lee, and H. L. Lee, J. Kor. Ceram. Soc., 38, 466 (2001).
5 X. Sun1, S. Li, J. Sun, X. Liu, and B. Zhu, Int. J. Electrochem. Soc., 2, 462 (2007).
6 Y. Liu, and L. Gao, Mater. Chem. Phys., 78, 480 (2002).
7 C. Galassi, E. Roncari, C. Capiani, and P. Pinasco, J. Eur. Ceram. Soc., 17, 361 (1997).
8 S. H. Chae, Y. W. Kim, I. H. Song, H. D. Kim, and J. S. Bea, J. Kor. Ceram. Soc., 45, 65 (2008).   DOI
9 D. S. Cameron, Platinum Met. Rev., 53, 147 (2009).   DOI
10 W. Shen, Y. Zhao, and C. Zhang, Thin Solid Films, 483, 382 (2005).   DOI