Journal of Applied Electrochemistry

, Volume 49, Issue 5, pp 517–528 | Cite as

Electrode system for large-scale reverse electrodialysis: water electrolysis, bubble resistance, and inorganic scaling

  • Ji-Hyung Han
  • Kyo-sik Hwang
  • Haejun Jeong
  • Sung-Yong Byeon
  • Joo-Youn Nam
  • Chan-Soo Kim
  • Hanki Kim
  • SeungCheol Yang
  • Ji Yeon Choi
  • Namjo JeongEmail author
Research Article
Part of the following topical collections:
  1. Electrochemical Processes


It is generally accepted that the effect of electrode resistance is not predominant in determining the performance of reverse electrodialysis (RED), because the contribution of electrode resistance to total internal resistance decreases as the number of cell pairs increases. However, this is not true under the condition in which gas is continuously produced by water electrolysis owing to the large stack voltage in pilot-scale applications. We verified that the bubble resistance of the electrode spacer in a conventional endplate causes the electric power of a RED system with 1000 cells to decrease by more than 20% under the specific condition in which the outermost feed solution (OFS) at both electrodes and the electrode solution (ES) are river water. This configuration, called OFS(river)/ES(river), is the best for minimizing inorganic scaling and toxic gas evolution. Another problem associated with the conventional endplate is fluid congestion owing to very narrow spaces, which causes sudden pH changes and deteriorates further with inorganic scaling. To address these issues, we removed the electrode spacer from the electrode system and utilized an open-type endplate with interconnected open spaces. This endplate maintained high electric power without the bubble resistance and suppressed the abrupt changes in the pH around the electrodes and the shielding membranes. We believe that our approach will be useful in the search for an optimum electrode design for RED systems on the industrial scale.


Pilot-scaled reverse electrodialysis Water electrolysis Electrode resistance Bubble resistance Electrode spacer Inorganic scaling 



This research was conducted under the Framework of the Research and Development Program of the Korea Institute of Energy Research (B8-2441).

Compliance with ethical standards

Conflict of interest

The authors declare no competing interests.

Supplementary material

10800_2019_1303_MOESM1_ESM.docx (93.1 mb)
Supplementary material 1 (DOCX 95312 KB)


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Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  • Ji-Hyung Han
    • 1
  • Kyo-sik Hwang
    • 1
  • Haejun Jeong
    • 1
  • Sung-Yong Byeon
    • 1
  • Joo-Youn Nam
    • 1
  • Chan-Soo Kim
    • 1
  • Hanki Kim
    • 1
  • SeungCheol Yang
    • 1
  • Ji Yeon Choi
    • 1
  • Namjo Jeong
    • 1
    Email author
  1. 1.Marine Energy Convergence and Integration Laboratory, Jeju Global Research CenterKorea Institute of Energy ResearchJejuSouth Korea

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