(大连海事大学 交通运输装备与海洋工程学院，大连 116026)
摘 要: 针对V2O5材料电导率低和锂离子扩散动力性能差等缺点，通过元素掺杂、表面包覆和微观形貌调控等方法可以有效进行改善。相比于一维和二维结构材料，三维多级结构材料既有高比表面积，又由于有良好的自支撑性，而不容易发生团聚。利用不同合成方法将V2O5材料微纳米化，制成具有不同形貌的三维多级结构，材料表现出优良的电化学性能。综述不同形貌三维多级结构V2O5材料的合成方法、形成机理及电化学性能的研究进展，并着重介绍制备工艺与V2O5材料微观形貌以及V2O5材料微观形貌和电化学性能之间的关系。
关键字: V2O5；三维多级结构；形貌调控；形成机理；电化学性能
（College of Transportation Equipment and Ocean Engineering, Dalian Maritime University, Dalian 116026, China）
Abstract:In view of the low electric conductivity and the poor lithium-ion diffusion kinetics, the element doping, surface coating and microstructure controlling were demonstrated as an effective strategy to improve these problems. Compared to the one-dimensional and two-dimensional structures materials, the three-dimensional hierarchical structure materials have both high specific surface area, and are not prone to agglomeration because of its good self-supporting properties. The cathode materials V2O5, which possess different morphology three-dimensional hierarchical structure made by different synthetic methods, show excellent electrochemical performances. In this review, the new progress of the synthesis methods, the formation mechanism and the electrochemical performance of different morphology three-dimensional hierarchical structure V2O5 materials were summarized. And the relationship between the preparation process and microscopic morphology as well as between microscopic morphology and electrochemical properties was introduced.
Key words: V2O5; three-dimensional hierarchical structure; morphology-controlling; formation mechanism; electrochemical performance
