Journal of Electrochemical Science and Technology

  • 제9권2호
  • /
  • Pages.141-148
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  • 2018
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  • 2093-8551(pISSN)
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  • 2288-9221(eISSN)
한국전기화학회 (The Korean Electrochemical Society)
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Analysis of Cell Performance with Varied Electrolyte Species and Amounts in a Molten Carbonate Fuel Cell

  • Lee, Ki-Jeong (Department of Chemical & Biological Engineering, Hanbat National University) ;
  • Kim, Yu-Jeong (Department of Chemical & Biological Engineering, Hanbat National University) ;
  • Koomson, Samuel (Department of Chemical & Biological Engineering, Hanbat National University) ;
  • Lee, Choong-Gon (Department of Chemical & Biological Engineering, Hanbat National University)
  • 투고 : 2018.03.05
  • 심사 : 2018.04.09
  • 발행 : 2018.06.30
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초록

This study evaluated the performance characteristics of varied electrolyte species and amounts in a molten carbonate fuel cell (MCFC). Coin-type MCFCs were used at the condition of $650^{\circ}C$ and 1 atm. In order to measure the effects of varied electrolyte species and amounts, electrolytes of $(Li+K)_2CO_3$ and $(Li+Na)_2CO_3$ were selected and the amounts of 1.5 g, 2.0 g, 3.0 g, and 4.0 g were used. Insignificant performance differences were observed in the cell using different electrolytes, but the cell performance was sensitive to the amount of the electrolyte used. The pore-filling ratio (PFR), a ratio of pore filling in the components by the liquid carbonate electrolytes, was used to determine the optimum performance range. Consequently, 77% PFR demonstrated the optimum performance for both electrolytes. Thus, the MCFC had a permissible but narrow optimum performance range. The remaining amounts of electrolyte in the cells were determined using the weight reduction ratio (WRR) method after several hours of cell operation. The WRR used the relationship between the initial loaded amount of electrolyte and weight reduction of components in 10 wt% acetic acid. The relationships were linear and identical between the two electrolyte species.

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참고문헌

  1. O. Tokio, Energy carriers and conversion systems, UNESCO-EOLESS, France, Vol. 2, 2009.
  2. I. Rexed, Application for Molten Carbonate Fuel Cells, KTH Royal Institute of Technology, Stockholm, 2014.
  3. C.-G. Lee, J. Electroanal. Chem., 2013, 701, 36-42. https://doi.org/10.1016/j.jelechem.2013.04.025
  4. S. McPhail, L. Leto, M. Della Pietra, V. Cigolotti and A. Moreno, International status of molten carbonate fuel cells technology - 2015, ENEA Publication, Italy, 2015.
  5. H.-J. Choi, J.-J. Lee, S.-H. Hyun and H.-C. Lim, Int. J. Hydrogen Energy, 2011, 36(17), 11048-11055. https://doi.org/10.1016/j.ijhydene.2011.05.184
  6. M. Bischoff, J. Power Sources, 2006, 154(2), 461-466. https://doi.org/10.1016/j.jpowsour.2005.10.027
  7. C.-G. Lee, S.-Y. Lee, B.-H. Ryu, D.-H. Kim and H.-C. Lim, J. Korean Electrochem. Soc., 2010, 13(1), 34-39. https://doi.org/10.5229/JKES.2010.13.1.034
  8. C.-G. Lee and H.-C. Lim, J. Electrochem. Soc., 2005, 152(1), A219-A228. https://doi.org/10.1149/1.1833318
  9. E. Antolini, Appl. Energy, 2011, 88(12), 4274-4293. https://doi.org/10.1016/j.apenergy.2011.07.009
  10. J. R. Selman, in Fuel cell systems, L. J. M. J. Blomen, M. N. Mugerwa (Eds.), Plenum, New York, 1993.
  11. H. Morita, M. Komoda, Y. Mugikura, Y. Izaki, T. Watanabe, Y. Masuda and T. Matsuyama, J. Power Sources, 2002, 112(2), 509-518 . https://doi.org/10.1016/S0378-7753(02)00468-8
  12. J. R. Selman and H. C. Maru, in Advances in Molten Salt Chemistry, G. Mamantov and J. Braunstein (eds), Plenum Press, New York, Vol. 4, 1981.
  13. C.-G. Lee, H. Hur and M.-B. Song, J. Electrochem. Soc., 2011, 158(4), B410-B415. https://doi.org/10.1149/1.3544941
  14. Y.-J. Kim, T.-K. Kim, K.-J. Lee and C.-G. Lee, J. Electrochem. Sci. Technol., 2016, 7(3), 234-240. https://doi.org/10.5229/JECST.2016.7.3.234
  15. C.-G. Lee, J. Electroanal. Chem., 2016, 776, 162-169. https://doi.org/10.1016/j.jelechem.2016.07.005