Advanced polyanionic electrode materials for potassium-ion batteries: Progresses,challenges and application prospects |
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| Affiliation: | 1. Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan, China;2. School of Chemical Engineering, Sichuan University, Chengdu 610065, Sichuan, China;3. Materials Interfaces Center, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, Guangdong, China;4. School of Materials Science and Engineering, Henan Normal University, Xinxiang 453007, Henan, China;5. Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, China;6. The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China;7. College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, Shandong, China;1. Helmholtz Institute Ulm (HIU), Electrochemistry I, Helmholtzstr. 11, 89081 Ulm, Germany;2. Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021 Karlsruhe, Germany |
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| Abstract: | Although potassium-ion batteries (KIBs) are considered a very promising energy storage system, their development for actual application still has a long way to go. Advanced electrode materials, as a fundamental component of KIBs, are essential for optimizing electrochemical performance and promoting effective energy storage. Due to their unique structural benefits in terms of cycle capability, strong ionic conductivity, and tunable operating voltage, polyanionic compounds are one type of viable electrode material for manufacturing high-performance KIBs. The huge size of K+ ion, on the other hand, places great demands on polyanionic materials, which must be able to withstand severe structural deformation during K+ intercalation/delamination. To maintain steady electrochemical performance, it is critical to follow the appropriate design guidelines for electrode materials. This paper provides a summary of current advancements in polyanionic compound for KIBs, with a focus on electrode material structural design. The effects of various parameters on electrochemical performance are examined and summarized. In addition, various viable solutions are proposed to address the impending issues posed by polyanionic compounds for KIBs, with the hope of providing a clearer picture of the field's future development path. |
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| Keywords: | Potassium-ion batteries Polyanionic compounds Electrode materials Review |
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