한국재료학회지 (Korean Journal of Materials Research)

  • 제32권7호
  • /
  • Pages.313-319
  • /
  • 2022
  • /
  • 1225-0562(pISSN)
  • /
  • 2287-7258(eISSN)
한국재료학회 (Materials Research Society of Korea)
권호 표지
DOI QR코드

DOI QR Code

Analysis of Bulk Concentration on Double-Layer Structure for Electrochemical Capacitors

  • Khaing, Khaing Nee Nee (Department of Electronics Engineering, Mandalay Technological University (MTU)) ;
  • Hla, Tin Tin (Department of Electronics Engineering, Mandalay Technological University (MTU))
  • 투고 : 2022.05.26
  • 심사 : 2022.07.02
  • 발행 : 2022.07.27
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Double-layer capacitors (DLCs) are developed with high surface electrodes to achieve a high capacitance value. In the present work, the initial bulk concentration of 1 mol/m3 and 3 mol /m3 are selected to show the consequential effects on the performance of a double-layer capacitor. A 1D model of COMSOL Multiphysics has been developed to analyze the electric field and potential in cell voltage, the electric displacement field and polarization induced by the field, and energy density in a double-layer structure. The electrostatics and the electric circuit modes in COMSOL are used to simulate the electrochemical processes in the double-layer structure. The analytical analysis of a double-layer capacitor with different initial bulk concentrations is investigated by using Poisson-Nernst-Plank equations. From the simulation results, the differential capacitance changes as a function of compact layer thickness and initial bulk concentration. The energy density varies with the differential capacitance and voltage window. The values of energy density are dominated by the interaction of ions in the solution and electrode surface.

키워드

과제정보

The author would like to express special thanks to her supervisor, Dr. Tin Tin Hla, Professor and Head of the Department of Electronic Engineering at Mandalay Technological University, for her constructive comments and criticism to share during the long period of this study. The author is thankful to all colleagues at MTU for their technical, helpful advice and management support.

참고문헌

  1. A. Yu, V. Chabot and J. Zhang, Electrochemical Super-capacitors for Energy Storage and Delivery, 1st Ed., CRC Press (2013).
  2. G. Madabattula and S. K. Gupta, Proceedings of the 2012 COMSOL Conference in Bangalore (2012).
  3. E. Gongadze, S. Petersen, U. Beck and U. V. Rienen, Proc. of the COMSOL Conf. 2009 Milan (2009).
  4. A. Berrueta, A. Ursua, I. S. Martin, A. Eftekhari and P. Sanchis, IEEE Access, 7, 50869 (2019). https://doi.org/10.1109/access.2019.2908558
  5. A. Schneuwly and R. Gallay, Proc. PCIM, p. 1 (2000).
  6. Q. Cheng and W. Chen, J. Power Sources, 469, 228400 (2020). https://doi.org/10.1016/j.jpowsour.2020.228400
  7. A. G. Kashkooli, S. Farhad, V. Chabot, A. Yu and Z. Chen, Applied Energy, 138, 631 (2014). https://doi.org/10.1016/j.apenergy.2014.09.033
  8. G. Zhang, Proc. of the COMSOL Conf., Boston (2010).
  9. K. B. Oldham, J. Electroanal. Chem., 613, 131 (2008). https://doi.org/10.1016/j.jelechem.2007.10.017
  10. V. Srinivasan and J. W. Weidner, J. Electrochem. Soc., 146, 1650 (1999). https://doi.org/10.1149/1.1391821
  11. H. Wang, J. Varghese and L. Pilon, Electrochimica Acta, 56, 6189 (2011). https://doi.org/10.1016/j.electacta.2011.03.140
  12. K. N. N. Khaing and T. T. Hla, Proc. of the Universal Academic Cluster Int. Conf. in Bangkok [Online], p. 214 (2021).
  13. K. N. N Khaing and T. T. Hla, Proc. of the Universal Academic Cluster Int. Conf. in Bangkok [Online], p. 228 (2021).