Shi Hua-Yu, Jia Zhongqiu, Wu Wanlong, Zhang Xiang, Liu Xiao-Xia, Sun Xiaoqi
Department of Chemistry, Northeastern University, 3-11 Wenhua Road, Shenyang, 110819, P. R. China.
Chemistry. 2020 Jul 2;26(37):8190-8204. doi: 10.1002/chem.201905706. Epub 2020 May 11.
Various cathode materials have been proposed for high-performance rechargeable batteries. Vanadyl phosphate is an important member of the polyanion cathode family. VOPO has seven known crystal polymorphs with tunneled or layered frameworks, which allow facile cation (de)intercalations. Two-electron transfer per formula unit can be realized by using V /V and V /V redox couples. The electrochemical performance is closely related to the structures of VOPO and the types of inserted cations. This Review outlines the crystal structures of VOPO polymorphs and their lithiated phases. The research progress of vanadyl phosphate cathode materials for different energy storage systems, including lithium-ion batteries, sodium-ion batteries, potassium-ion batteries, multivalent batteries, and supercapacitors, as well as the related mechanism investigations are summarized. It is hoped that this Review will help with future directions of using vanadyl phosphate materials for energy storage.
人们已经提出了各种用于高性能可充电电池的阴极材料。磷酸氧钒是聚阴离子阴极家族的重要成员。VOPO有七种已知的晶体多晶型物，具有隧道或层状结构，这使得阳离子能够轻松地（脱）嵌入。通过使用V⁴⁺/V³⁺和V⁵⁺/V⁴⁺氧化还原对，每个化学式单元可以实现两电子转移。电化学性能与VOPO的结构和插入阳离子的类型密切相关。本综述概述了VOPO多晶型物及其锂化相的晶体结构。总结了磷酸氧钒阴极材料在不同储能系统中的研究进展，包括锂离子电池、钠离子电池、钾离子电池、多价电池和超级电容器，以及相关的机理研究。希望本综述将有助于指导未来使用磷酸氧钒材料进行储能的研究方向。
