Three-electrolyte electrochemical energy storage systems using both anion- and cation-exchange membranes as separators

Guo-Ming Weng, Chi-Ying Vanessa Li and Kwong-Yu Chan

Energy, 2019, vol. 167, issue C, 1011-1018

Abstract: A three-electrolyte cell configuration, in which an additional compartment filled with salt solution is created between the cation-exchange membrane and the anion-exchange membrane to separate the respective opposite charged ionic species, can be used to realize novel electrochemical systems using promising redox couples. Using lead-acid metal hydride hybrid redox couple as a typical three-electrolyte prototype, we monitored the potential change of individual components during operation to obtain better understanding on the factors affecting the electrochemical performance (including types of salt solution, electrolyte concentration, inter-electrode gap). Key issues (i.e., salting-out) and proposed solutions are discussed. This work offers new solutions to develop promising energy storage techniques.

Keywords: Energy storage; Cation-exchange membrane; Anion-exchange membrane; Rechargeable battery; Flow battery (search for similar items in EconPapers)
Date: 2019
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Citations: View citations in EconPapers (5)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:167:y:2019:i:c:p:1011-1018

DOI: 10.1016/j.energy.2018.11.030

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