Li Tao, Li Haixin, Yuan Jingchen, Xia Yong, Liu Yuejun, Sun Aokui
School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China.
School of Metallurgy and Environment, Central South University, Changsha 410083, China.
Materials (Basel). 2022 Apr 4;15(7):2654. doi: 10.3390/ma15072654.
In recent years, aqueous zinc ion batteries (ZIBs) have attracted much attention due to their high safety, low cost, and environmental friendliness. Owing to the unique layered structure and more desirable layer spacing, transition metal dichalcogenide (TMD) materials are considered as the comparatively ideal cathode material of ZIBs which facilitate the intercalation/ deintercalation of hydrated Zn between layers. However, some disadvantages limit their widespread application, such as low conductivity, low reversible capacity, and rapid capacity decline. In order to improve the electrochemical properties of TMDs, the corresponding modification methods for each TMDs material can be designed from the following modification strategies: defect engineering, intercalation engineering, hybrid engineering, phase engineering, and in-situ electrochemical oxidation. This paper summarizes the research progress of TMDs as cathode materials for ZIBs in recent years, discusses and compares the electrochemical properties of TMD materials, and classifies and introduces the modification methods of MoS and VS. Meanwhile, the corresponding modification scheme is proposed to solve the problem of rapid capacity fading of WS. Finally, the research prospect of other TMDs as cathodes for ZIBs is put forward.
近年来，水系锌离子电池（ZIBs）因其高安全性、低成本和环境友好性而备受关注。由于具有独特的层状结构和更合适的层间距，过渡金属二硫属化物（TMD）材料被认为是ZIBs相对理想的正极材料，有利于水合锌在层间的嵌入/脱出。然而，一些缺点限制了它们的广泛应用，如低导电性、低可逆容量和快速的容量衰减。为了改善TMDs的电化学性能，可以从以下改性策略设计针对每种TMDs材料的相应改性方法：缺陷工程、插层工程、杂化工程、相工程和原位电化学氧化。本文综述了近年来TMDs作为ZIBs正极材料的研究进展，讨论并比较了TMD材料的电化学性能，对MoS和VS的改性方法进行了分类和介绍。同时，针对WS容量快速衰减的问题提出了相应的改性方案。最后，对其他TMDs作为ZIBs正极的研究前景进行了展望。
