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Interphases in the electrodes of potassium ion batteries

Han, Yupei; Vijaya Kumar Saroja, Ajay Piriya; Tinker, Henry R; Xu, Yang; (2022) Interphases in the electrodes of potassium ion batteries. Journal of Physics: Materials , 5 (2) , Article 022001. 10.1088/2515-7639/ac5dce. Green open access

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Rechargeable potassium-ion batteries (PIBs) are of great interest as a sustainable, environmentally friendly, and cost-effective energy storage technology. The electrochemical performance of a PIB is closely related to the reaction kinetics of active materials, ionic/electronic transport, and the structural/electrochemical stability of cell components. Alongside the great effort devoted in discovering and optimising electrode materials, recent research unambiguously demonstrates the decisive role of the interphases that interconnect adjacent components in a PIB. Knowledge of interphases is currently less comprehensive and satisfactory compared to that of electrode materials, and therefore, understanding the interphases is crucial to facilitating electrode materials design and advancing battery performance. The present review aims to summarise the critical interphases that dominate the overall battery performance of PIBs, which includes solid-electrolyte interphase, cathode-electrolyte interphase, and solid–solid interphases within composite electrodes, via exploring their formation principles, chemical compositions, and determination of reaction kinetics. State-of-the-art design strategies of robust interphases are discussed and analysed. Finally, perspectives are given to stimulate new ideas and open questions to further the understanding of interphases and the development of PIBs.

Type: Article
Title: Interphases in the electrodes of potassium ion batteries
Open access status: An open access version is available from UCL Discovery
DOI: 10.1088/2515-7639/ac5dce
Publisher version: https://doi.org/10.1088/2515-7639/ac5dce
Language: English
Additional information: This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third-party material in this article are included in the Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
Keywords: Interphase, potassium ion battery, solid-electrolyte interphase, cathode-electrolyte interphase, heterostructure, reaction kinetics, charge transfer
UCL classification: UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
UCL > Provost and Vice Provost Offices > UCL BEAMS
URI: https://discovery.ucl.ac.uk/id/eprint/10146097
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