磷酸钒锂正极材料掺杂改性研究进展

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董虎林¹，包海萍¹，汪浩^2*，彭建洪^1*

1. 青海民族大学物理与电子信息工程学院，青海西宁 8100072. 北京工业大学材料科学与工程学院，北京 100124

收稿日期:2018-07-13修回日期:2018-10-14出版日期:2019-06-22发布日期:2019-06-20
通讯作者:董虎林

Research progress in doping of lithium vanadium phosphate cathode materials

Hulin DONG¹, Haiping BAO¹, Hao WANG^2*, Jianhong PENG^1*

1. College of Physics and Electronic Information Engineering, Qinghai University of Nationalities, Xining, Qinghai 810007, China2. College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China

Received:2018-07-13Revised:2018-10-14Online:2019-06-22Published:2019-06-20

摘要/Abstract

摘要： 面对日趋严重的能源问题和环境问题，迫切需要寻找新的清洁能源以解决传统清洁能源(太阳能、潮汐能、风能等)转换效率低、能量储存难度大等问题。锂离子电池因绿色环保、安全性能好、放电容量高、循环寿命长、便于携带等优点受到研究者青睐，其中Li3V2(PO4)3 (LVP)锂离子电池因其较高的放电比容量和电压平台、良好的安全性能、便携性、环保型、低成本等优点成为备受关注的锂离子电池正极材料之一。由于LVP自身结构的缺陷，导致其离子导电率和电子导电率较低，不利于发挥其理论容量高、倍率性能优等特点。目前多数关于锂离子电池正极材料LVP的改性研究中，离子掺杂是最有效的方法之一。离子掺杂一方面可以优化材料的晶格参数，提高充放电过程中晶体结构的稳定性，改善其循环寿命；另一方面有助于增大晶格间隙，扩大离子的扩散通道，从而有利于提高离子扩散系数，改善电极材料的离子导电率。在目前的研究中，LVP的离子掺杂方法主要包括锂位掺杂、钒位掺杂、阴离子掺杂和多位掺杂四种，其中钒位掺杂包括钒位单掺杂和共掺杂。本工作阐述了近年来LVP离子掺杂改性的研究进展，并对该材料未来的发展趋势进行了展望。

引用本文

董虎林包海萍汪浩彭建洪. 磷酸钒锂正极材料掺杂改性研究进展[J]. 过程工程学报, 2019, 19(3): 483-491.
Hulin DONG Haiping BAO Hao WANG Jianhong PENG. Research progress in doping of lithium vanadium phosphate cathode materials[J]. Chin. J. Process Eng., 2019, 19(3): 483-491.

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