Insights into the Jahn‐Teller Effect in Layered Oxide Cathode Materials for Potassium‐Ion Batteries

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	Insights into the Jahn‐Teller Effect in Layered Oxide Cathode Materials for Potassium‐Ion Batteries
	Yunshan Zheng1 ; Huixian Xie1 ; Junfeng Li 1; Kwan San Hui 2; Zhenjiang Yu 1; Huifang Xu1 ; Duc Anh Dinh 3; Zhengqing Ye 4; Chenyang Zha 1; HUI KWUN NAM1
	2024-04
Source Publication	Advanced Energy Materials
Volume	14 Issue:14 Pages:2400461
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 K x MO2 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 K x MO2 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.
Document Type	Journal article
Collection	INSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding Author	Kwan San Hui
Affiliation	1.Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau SAR, 999078, China 2.School of Engineering Faculty of Science University of East Anglia Norwich NR4 7TJ, UK 3.VKTech Research Center NTT Hi-Tech Institute Nguyen Tat Thanh University Ho Chi Minh City 700000, Vietnam 4.Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology School of Material Science and Engineering Hebei University of Technology Tianjin 300401, P. R. China
First Author Affilication	INSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Recommended Citation GB/T 7714	Yunshan Zheng,Huixian Xie,Junfeng Li,et al. Insights into the Jahn‐Teller Effect in Layered Oxide Cathode Materials for Potassium‐Ion Batteries[J]. Advanced Energy Materials, 2024, 14(14), 2400461.
APA	Yunshan Zheng., Huixian Xie., Junfeng Li., Kwan San Hui., Zhenjiang Yu., Huifang Xu., Duc Anh Dinh., Zhengqing Ye., Chenyang Zha., & HUI KWUN NAM (2024). Insights into the Jahn‐Teller Effect in Layered Oxide Cathode Materials for Potassium‐Ion Batteries. Advanced Energy Materials, 14(14), 2400461.
MLA	Yunshan Zheng,et al."Insights into the Jahn‐Teller Effect in Layered Oxide Cathode Materials for Potassium‐Ion Batteries".Advanced Energy Materials 14.14(2024):2400461.

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