Korean Chemical Engineering Research

  • 제62권3호
  • /
  • Pages.253-261
  • /
  • 2024
  • /
  • 0304-128X(pISSN)
  • /
  • 2233-9558(eISSN)
한국화학공학회 (The Korean Institute of Chemical Engineers)
권호 표지
DOI QR코드

DOI QR Code

Investigation of Temperature Effect on Electrode Reactions of Molten Carbonate Electrolysis Cells and Fuel Cells using Reactant Gas Addition Method

  • Samuel Koomson (Department of Chemical & Biological Engineering, Hanbat National University) ;
  • Choong-Gon Lee (Department of Chemical & Biological Engineering, Hanbat National University)
  • 투고 : 2024.05.09
  • 심사 : 2024.06.26
  • 발행 : 2024.08.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

The impact of temperature on electrode reactions in 100 cm2 molten carbonate cells operating as Fuel Cells (FC) and Electrolysis Cells (EC) was examined using the Reactant Gas Addition (RA) method across a temperature range of 823 to 973 K. The RA findings revealed that introduction of H2 and CO2, reduced the overpotential at Hydrogen Electrode (HE) in both the modes. However, no explicit temperature dependencies were observed. Conversely, adding O2 and CO2 to the Oxygen Electrode (OE) displayed considerable temperature dependencies in FC mode which can be attributed to increased gas solubility due to the electrolyte melting at higher temperatures. In EC mode, there was no observed temperature dependence for overpotential. Furthermore, the addition of O2 led to a decrease in overpotential, while CO2 addition resulted in an increased overpotential, primarily due to changes in the concentration of O2 species.

키워드

과제정보

This research was supported by the New & Renewable Energy Core Technology Programme of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), granted financial resources from the Ministry of Trade, Industry, and Energy, Republic of Korea (No. 20213030040080).

참고문헌

  1. Koomson, S. and Lee, C. G., "Comparison of Gas Phase Transport Effects Between Fuel Cell and Electrolysis Cell Modes of a 100 cm2 Class Molten Carbonate Cell," J. Electroanal. Chem., 925, 116896(2022).
  2. Koomson, S. and Lee, C.-G., "Reaction Characteristics of Molten Carbonate Cell Operated in Fuel Cell and Electrolysis modes with Reactant Gas Addition Method," J. Electroanal. Chem., 117577 (2023).
  3. Koomson, S., Bae, S. H., Kim, K. M. and Lee, C.-G., "Effect of Temperature on the Electrode Overpotential of Molten Carbonate Electrolysis and Fuel Cells with Inert-gas Step Addition Method," J. Electroanal. Chem., 950, 17844(2023).
  4. Saito, T., Itoh, Y., Nishioka, M. and Miyake, Y., "Effect of Operating Temperature on the Performance of Molten-carbonate Fuel Cells," J. Power Sources., 36, 69-77(1991).
  5. Morita, H., Komoda, M., Mugikura, Y., Izaki, Y., Watanabe, T., Masuda, Y. and Matsuyama, T., "Performance Analysis of Molten Carbonate Fuel Cell Using a Li/Na Electrolyte," J. Power Sources., 112, 509-518(2002).
  6. Musa, A., Steeman, H.-J. and De Paepe, M., The Effect of Operating Temperature on the Performance of Molten Carbonate Fuel Cell systems, in: 16th World Hydrog. Energy Conf., International Association for Hydrogen Energy, 2006.
  7. Lee, C. G., "Influence of Temperature on the Anode Reaction in a Molten Carbonate Fuel Cell," J. Electroanal. Chem., 785, 152-158(2017).
  8. Lee, C. G., "Effect of Temperature on the Cathodic Overpotential in a Molten Carbonate Fuel Cell," J. Electroanal. Chem., 701, 36-42(2013).
  9. Hu, L., Rexed, I., Lindbergh, G., and Lagergren, C., "Electrochemical Performance of Reversible Molten Carbonate Fuel Cells," Int. J. Hydrogen Energy., 39, 12323-12329(2014).
  10. Hu, L., Lindbergh, G., Lagergren, C., "Operating the Nickel Electrode with Hydrogen-lean Gases in the Molten Carbonate Electrolysis Cell (MCEC)," Int. J. Hydrogen Energy., 41, 18692-18698(2016).
  11. Hu, L., Lindbergh, G. and Lagergren, C., "Electrode Kinetics of the Ni Porous Electrode for Hydrogen Production in a Molten Carbonate Electrolysis Cell (MCEC)," J. Electrochem. Soc., 162, F1020-F1028(2015).
  12. Hu, L., Lindbergh, G. and Lagergren, C., "Electrode Kinetics of the NiO Porous Electrode for Oxygen Production in the Molten Carbonate Electrolysis Cell (MCEC)," Faraday Discuss., 182, 493-509(2015).
  13. Perez-Trujillo, J. P., Elizalde-Blancas, F., Della Pietra, M. and McPhail, S. J., "A Numerical and Experimental Comparison of a Single Reversible Molten Carbonate Cell Operating in Fuel Cell Mode and Electrolysis Mode," Appl. Energy., 226, 1037-1055 (2018).
  14. Audasso, E., Kim, K. I., Accardo, G., Kim, H. S. and Yoon, S. P., "Investigation of Molten Carbonate Electrolysis Cells Performance for H2 Production and CO2 Capture," J. Power Sources., 523, 231039(2022).
  15. Lee, C. G., Hwang, J. Y., Oh, M., Kim, D. H., Lim, H. C., "Overpotential Analysis with Various Anode Gas Compositions in a Molten Carbonate Fuel Cell," J. Power Sources., 179, 467-473(2008).