Inorganic Chemicals Industry ›› 2021, Vol. 53 ›› Issue (10): 36-40.doi: 10.19964/j.issn.1006-4990.2020-0598

• Reviews and Special Topics • Previous Articles     Next Articles

Research progress on lithium sodium titanate for lithium ion batteries

Liu Yang(),Cai Zongying(),Cao Weigang,Liu Yuzhao   

  1. North China University of Science and Technology,Tangshan 063200,China
  • Received:2020-11-09 Online:2021-10-10 Published:2021-10-11
  • Contact: Cai Zongying E-mail:790043167@qq.com;caizy@ncst.edu.cn

Abstract:

Na2Li2Ti6O14 battery has the characteristics of low potential platform(1.3V) and low economic cost,which is of great significance to portable electronic devices,energy vehicles,ecological environment and other fields.Due to the low intrinsic ionic conductivity of lithium sodium titanate battery,improving the lithium ion diffusion coefficient of lithium sodium titanate battery is the main research direction at present.Therefore,the structure characteristics of lithium sodium titanate and the influence of synthesis methods on the particle size,morphology and electrochemical performance of lithium sodium titanate were reviewed.The effect of different doping ions and surface coating modification on the discharge specific capacity,cycle performance and ion diffusion coefficient of lithium sodium titanate battery were compared.Adding proper amount of niobium led to higher lithium ion diffusion coefficient,and coated carbon nanotubes had higher capacity retention,which was helpful to further improve the electrochemical performance of lithium sodium titanate battery.

Key words: lithium ion battery, anode material, lithium sodium titanate, ion doping, surface coating

CLC Number: