Journal
ENERGY
Volume 167, Issue -, Pages 1011-1018Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2018.11.030
Keywords
Energy storage; Cation-exchange membrane; Anion-exchange membrane; Rechargeable battery; Flow battery
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Funding
- Research Grant Council of the Hong Kong Special Administrative Region, China [T23-601/17-R]
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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. (C) 2018 Elsevier Ltd. All rights reserved.
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