Potassium-ion battery is rich in resources and cheap in price, in the era of lithium-ion battery commercialization, potassium-ion battery is the most likely to replace it. Based on the classification and summary of electrode materials for potassium-ion batteries, this paper focuses on the introduction of manganese-based oxide K_xMnO₂. The layered K_xMnO₂ has a large layer spacing and can be embedded with large size potassium-ions. This paper focuses on the preparation and doping of manganese-based cathode materials for potassium-ion batteries, summarizes the main challenges of K_xMnO₂-based cathode materials in the current stage of research and further looks into its future development direction.

中文翻译：

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钾离子电池层状锰基金属氧化物正极材料研究进展：从制备到改性

钾离子电池资源丰富，价格便宜，在锂离子电池商业化时代，钾离子电池最有可能取代它。本文在对钾离子电池电极材料进行分类和总结的基础上，重点介绍锰基氧化物K _x MnO ₂。层状K _x MnO ₂层间距大，可以嵌入大尺寸的钾离子。本文重点研究了钾离子电池锰基正极材料的制备和掺杂，总结了K _x MnO ₂基正极材料现阶段研究面临的主要挑战，并进一步展望了其未来的发展方向。