Zhang Wenchao, Liu Yajie, Guo Zaiping
Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Innovation Campus, North Wollongong, NSW 2500, Australia.
School of Mechanical, Materials, Mechatronic, and Biomedical Engineering, Faculty of Engineering & Information Sciences, University of Wollongong, Wollongong, NSW 2522, Australia.
Sci Adv. 2019 May 10;5(5):eaav7412. doi: 10.1126/sciadv.aav7412. eCollection 2019 May.
Potassium-ion batteries (PIBs) have attracted tremendous attention due to their low cost, fast ionic conductivity in electrolyte, and high operating voltage. Research on PIBs is still in its infancy, however, and achieving a general understanding of the drawbacks of each component and proposing research strategies for overcoming these problems are crucial for the exploration of suitable electrode materials/electrolytes and the establishment of electrode/cell assembly technologies for further development of PIBs. In this review, we summarize our current understanding in this field, classify and highlight the design strategies for addressing the key issues in the research on PIBs, and propose possible pathways for the future development of PIBs toward practical applications. The strategies and perspectives summarized in this review aim to provide practical guidance for an increasing number of researchers to explore next-generation and high-performance PIBs, and the methodology may also be applicable to developing other energy storage systems.
钾离子电池（PIBs）因其成本低、在电解质中离子传导速度快以及工作电压高而备受关注。然而，对钾离子电池的研究仍处于起步阶段，全面了解各组件的缺点并提出克服这些问题的研究策略，对于探索合适的电极材料/电解质以及建立电极/电池组装技术以推动钾离子电池的进一步发展至关重要。在这篇综述中，我们总结了目前在该领域的认识，分类并突出了应对钾离子电池研究关键问题的设计策略，并提出了钾离子电池未来朝着实际应用发展的可能途径。本综述中总结的策略和观点旨在为越来越多探索下一代高性能钾离子电池的研究人员提供实际指导，该方法也可能适用于开发其他储能系统。
