Using aluminum and Li2CO3 particles to reinforce the α-LiAlO2 matrix for molten carbonate fuel cells

Jin Eok Kim, Kailash Yashvant Patil, Jonghee Han, Sung Pil Yoon, Suk Woo Nam, Tae Hoon Lim, Seong Ahn Hong, Hansung Kim, Hee Chun Lim

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24 Citations (Scopus)

Abstract

The electrolyte substrate (matrix) of a molten carbonate fuel cell (MCFC) provides both ionic conduction and gas sealing. During the starting-up and operating of MCFC stacks at 923 K, the matrix can experience mechanical stresses that can cause cracking. In particular, the pure α-LiAlO2 that is generally used for the MCFC possesses poor mechanical strength. In this study, we employed Al and Li2CO3 particles as reinforcement materials to increase the mechanical strength of the α-LiAlO2 matrix for its stable long-term operation. The mechanical strength of the matrix increased dramatically after adding Al particles into the pure matrix. Moreover, we operated a single cell for 2000 h after adding Li2CO3 particles into the Al-reinforced matrix to prevent a Li-ion shortage caused by a lithiated Al reaction in the matrix.

Original languageEnglish
Pages (from-to)9227-9232
Number of pages6
JournalInternational Journal of Hydrogen Energy
Volume34
Issue number22
DOIs
Publication statusPublished - 2009 Nov

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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    Kim, J. E., Patil, K. Y., Han, J., Yoon, S. P., Nam, S. W., Lim, T. H., Hong, S. A., Kim, H., & Lim, H. C. (2009). Using aluminum and Li2CO3 particles to reinforce the α-LiAlO2 matrix for molten carbonate fuel cells. International Journal of Hydrogen Energy, 34(22), 9227-9232. https://doi.org/10.1016/j.ijhydene.2009.08.069