Inorganic Chemicals Industry ›› 2022, Vol. 54 ›› Issue (3): 38-44.doi: 10.19964/j.issn.1006-4990.2021-0337

• Reviews and Special Topics • Previous Articles     Next Articles

Research progress on preparation of Li3V2(PO43 cathode material for lithium-ion batteries

ZHANG Xinyi1(),DI Yuli1,2(),DONG Qi1,CHEN Xingyu1,ZHANG Zhengdong1   

  1. 1. College of Materials and Chemistry & Chemical Engineering,Chengdu University of Technology,Chengdu 610059,China
    2. School of Science,Xichang University
  • Received:2021-05-24 Online:2022-03-10 Published:2022-03-18
  • Contact: DI Yuli E-mail:952658961@qq.com;diyulidiyumei@163.com

Abstract:

Compared with other lithium-ion battery cathode material,lithium vanadium phosphate[Li3V2(PO43] material with monoclinic structure has higher working voltage(3.0~4.8 V),good ion mobility and excellent thermal stability.It is a high-power lithium-ion battery cathode material with competitive advantages and development prospects,and has become a research hotspot in recent years.The structural characteristics of lithium vanadium phosphate and its charging and discharging mechanism were reviewed.The common synthesis methods of lithium vanadium phosphate included carbothermic reduction,hydrothermal method,sol-gel method and fluidization method,and the influence of different synthesis methods and processes of lithium vanadium phosphate on the different morphologies and electrochemical properties of the prepared samples was emphasized.The improvement methods of different synthesis methods are analyzed and summarized to improve the shortco-mings and defects of low electronic conductivity and lithium ion diffusion coefficient of lithium vanadium phosphate cathode materials.Finally,In view of the problems existing in the application of vanadium lithium phosphate cathode material in lithium ion battery,the possible development direction and research focus of this material in the future were prospected.It was pointed out that the preparation method of materials needed to be optimized to improve the particle morphology,electronic conductivity and diffusion coefficient of materials,so as to improve the cycle performance,rate performance and charge/dis-charge performance of materials.It was necessary to improve the preparation process,improve the safety of the experiment,simplify the reaction process and reduce the preparation cost in order to realize the industrial application of lithium vanadium phosphate cathode materials.

Key words: lithium-ion battery, Li3V2(PO43, synthesis methods, electrochemical performance

CLC Number: