Insights into the Jahn-Teller effect in layered oxide cathode materials for potassium-ion batteries

Zheng, Yunshan, Xie, Huixian, Li, Junfeng, Hui, Kwan San ORCID: https://orcid.org/0000-0001-7089-7587, Yu, Zhenjiang, Xu, Huifang, Dinh, Duc Anh, Ye, Zhenqing, Zha, Chenyang and Hui, Kwun Nam (2024) Insights into the Jahn-Teller effect in layered oxide cathode materials for potassium-ion batteries. Advanced Energy Materials, 14 (14). ISSN 1614-6832

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Abstract

Potassium-ion batteries (PIBs) have attracted increasing interest as promising alternatives to lithium-ion batteries (LIBs) in large-scale electrical energy storage systems due to the potential price advantages, abundant availability of potassium resources, and low standard redox potential of potassium. However, the pursuit of suitable cathode materials that exhibit desirable characteristics such as voltage platforms, high capacity, and long cycling stability is of utmost importance. Recently, layered transition-metal oxides for PIBs offer great potential due to their high theoretical capacity, suitable voltage range, and eco-friendliness. Nevertheless, the progress of KxMO2 cathodes in PIBs faces obstacles due to the detrimental effects of structural disorder and irreversible phase transitions caused by the Jahn-Teller effect. This review provides a brief description of the origin and mechanism of the Jahn-Teller effect, accompanied by the proposed principles to mitigate this phenomenon. In particular, the current status of KxMO2 cathodes for PIBs, is summarized highlighting the challenges posed by the Jahn-Teller effect. Furthermore, promising strategies, such as composition modulation, synthesis approaches, and surface modification, are proposed to alleviate and suppress the Jahn-Teller effect. These strategies offer valuable insights into the prospects of innovative cathode materials and provide a foundation for future research in the field of PIBs.

Item Type:	Article
Additional Information:	Funding Information: Y.Z. and H.X. contributed equally to this work. This work was funded by the Science and Technology Development Fund, Macau SAR (0033/2023/ITP1, 0022/2023/RIB1, 046/2019/AFJ, 0007/2021/AGJ, 0070/2023/AFJ, 006/2022/ALC), University of Macau (File no. MYRG2020‐00187‐IAPME, and MYRG2022‐00223‐IAPME) and the UEA funding.
Uncontrolled Keywords:	cathode materials,jahn–teller effect,layered oxide,potassium-ion battery,strategies,renewable energy, sustainability and the environment,materials science(all),sdg 7 - affordable and clean energy,sdg 13 - climate action ,/dk/atira/pure/subjectarea/asjc/2100/2105
Faculty \ School:	Faculty of Science > School of Engineering
Related URLs:	http://www.scopus.com/inward/record.url?...
Depositing User:	LivePure Connector
Date Deposited:	05 Apr 2024 09:32
Last Modified:	16 Apr 2024 08:30
URI:	https://ueaeprints.uea.ac.uk/id/eprint/94830
DOI:	10.1002/aenm.202400461

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