Liu, Mingqiang;
Wang, Peiqingfen;
Zhang, Wei;
He, Hongzhen;
He, Guanjie;
Xu, Shusheng;
Yao, Lu;
(2024)
Strategies for pH regulation in aqueous zinc ion batteries.
Energy Storage Materials
, 67
, Article 103248. 10.1016/j.ensm.2024.103248.
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Abstract
Aqueous zinc ions batteries (AZIBs), which use non-organic electrolytes, have garnered sustained interest as a future energy storage technology, primarily due to their low cost, environmental friendliness, and intrinsic safety. However, zinc ion batteries suffer from a series of serious challenges, including hydrogen evolution reaction (HER) at the anode, surface passivation, dendrite formation, as well as limited operating voltage and comparatively low energy density. These factors are all influenced by the concentration of H+ in the electrolyte (i.e. the pH), and its fluctuations during the cycling process. To date, there remains a lack of systematic evaluation of the correlation between the pH value of electrolyte and the challenges faced by AZIBs, a focused review of how pH influences the electrochemical performance of AZIBs, or any focused discussion of strategies that can be used to improve cell efficiency. In this review we emphasize the strong correlation between electrolyte pH and AZIBs challenges and detail the research progress made in recent years relating to electrolyte additives, separator modification, interfacial protective layers, and battery system design, with a particular focus on the regulatory mechanisms associated with pH control. On this basis, we propose future research focuses and make suggestions for the onward development of AZIBs.
| Type: | Article |
|---|---|
| Title: | Strategies for pH regulation in aqueous zinc ion batteries |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.ensm.2024.103248 |
| Publisher version: | https://doi.org/10.1016/j.ensm.2024.103248 |
| Language: | English |
| Additional information: | © 2024 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
| Keywords: | AZIBs, Zinc dendrites, HER, pH regulation, Electrolyte optimization |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10187683 |
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