Unlocking the potential of potassium-chalcogen (S, Se, Te) batteries: From storage mechanisms to material enhancements

IF 20.4 Q1 CHEMISTRY, MULTIDISCIPLINARY

EnergyChem Pub Date : 2026-03-01 Epub Date: 2026-02-07 DOI:10.1016/j.enchem.2026.100183

Liqin Liao , Xilin Chen , Yingjuan Sun , Hongyan Li

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Abstract

In the context of accelerating transformation in the global energy structure and increasingly depleting resources, potassium ion batteries (PIBs) are emerging as an important development direction in the energy storage field due to their unique resource advantages and cost-effectiveness. However, the limited capacity of traditional cathode materials restricts the energy density of PIBs. Therefore, potassium-chalcogen batteries (PCBs) based on chalcogen elements (S, Se, Te) have attracted considerable attention due to their high theoretical capacity and rich redox chemistry, offering a promising route for high-energy storage. This review systematically summarizes the electrochemical mechanisms, material design strategies, and performance optimization pathways of PCBs, establishing theoretical guidance and technical routes for the development of high-performance PCBs. The key challenges faced by cathode materials based on chalcogen elements in PCBs and corresponding optimization strategies were discussed in detail. Additionally, the progress of PCB anodes and their potential future development directions are also explored. Furthermore, advances and strategies for tuning and optimizing electrolyte formulation are highlighted. Finally, the review summarizes future research directions focused on improving the overall performance and long-term cycling stability of batteries, with the aim of advancing the practical application of PCB in next-generation energy storage systems.

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释放钾-硫（S, Se, Te）电池的潜力：从存储机制到材料增强

在全球能源结构转型加速、资源日益枯竭的背景下，钾离子电池以其独特的资源优势和成本效益，成为储能领域的重要发展方向。然而，传统正极材料的容量有限，限制了pib的能量密度。因此，基于硫元素（S、Se、Te）的钾-硫电池（pcb）因其理论容量高、氧化还原化学性质丰富而备受关注，为高能储能提供了一条有前景的途径。本文系统总结了pcb的电化学机理、材料设计策略和性能优化途径，为高性能pcb的发展建立理论指导和技术路线。详细讨论了pcb中基于氯元素的正极材料面临的关键挑战和相应的优化策略。并对PCB阳极的研究进展及未来发展方向进行了展望。此外，还强调了电解质配方的调整和优化的进展和策略。最后，总结了未来的研究方向，重点是提高电池的整体性能和长期循环稳定性，旨在推动PCB在下一代储能系统中的实际应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

EnergyChem Multiple-

CiteScore

40.80

自引率

2.80%

发文量

审稿时长

40 days

期刊介绍： EnergyChem, a reputable journal, focuses on publishing high-quality research and review articles within the realm of chemistry, chemical engineering, and materials science with a specific emphasis on energy applications. The priority areas covered by the journal include:Solar energy,Energy harvesting devices,Fuel cells,Hydrogen energy,Bioenergy and biofuels,Batteries,Supercapacitors,Electrocatalysis and photocatalysis,Energy storage and energy conversion,Carbon capture and storage