材料科学
阴极
纳米技术
阳极
插层(化学)
氧化物
储能
电池(电)
电化学
钾离子电池
电化学储能
石墨
电极
无机化学
冶金
超级电容器
电气工程
磷酸钒锂电池
化学
物理
工程类
物理化学
功率(物理)
量子力学
作者
Muthu Gnana Theresa Nathan,Hakgyoon Yu,Guk‐Tae Kim,Jin‐Hee Kim,Jung Sang Cho,Jeha Kim,Jae‐Kwang Kim
标识
DOI:10.1002/advs.202105882
摘要
To meet future energy demands, currently, dominant lithium-ion batteries (LIBs) must be supported by abundant and cost-effective alternative battery materials. Potassium-ion batteries (KIBs) are promising alternatives to LIBs because KIB materials are abundant and because KIBs exhibit intercalation chemistry like LIBs and comparable energy densities. In pursuit of superior batteries, designing and developing highly efficient electrode materials are indispensable for meeting the requirements of large-scale energy storage applications. Despite using graphite anodes in KIBs instead of in sodium-ion batteries (NIBs), developing suitable KIB cathodes is extremely challenging and has attracted considerable research attention. Among the various cathode materials, layered metal oxides have attracted considerable interest owing to their tunable stoichiometry, high specific capacity, and structural stability. Therefore, the recent progress in layered metal-oxide cathodes is comprehensively reviewed for application to KIBs and the fundamental material design, classification, phase transitions, preparation techniques, and corresponding electrochemical performance of KIBs are presented. Furthermore, the challenges and opportunities associated with developing layered oxide cathode materials are presented for practical application to KIBs.
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