Dynamic and Frontier of Modifications of Li₄Ti₅O₁₂ Anode Material

As an anode material of lithium ion battery,lithium titanate（Li₄Ti₅O₁₂） has the advantages of stable structure,long life and high safety,and it’s getting more and more attentions in the fields of power and energy storage.However,lithium titanate has a low conductivity and poor electroconductibility prone to causing electrode polarization,which greatly limits its applications in charge-discharge at high current densities.Focusing on the above problems,we summarized the recent research trends on anode material of lithium titanate at home and abroad. It is found that the coated modification,ion doping and composite methods are hot spots for researches on improvement of electrochemical performances of lithium titanate material.At the same time,the shortcomings and defects of carbon anode material were pointed out here,further confirming the superiorities of lithium titanate.Nevertheless,the cost of lithium titanate material is much higher than that of carbon material,which is not conducive to large-scale popularization and promotion.How to reduce the cost of lithium titanate material,improve its specific energy and electrochemical properties,and achieve a widespread application in areas such as large scale energy storage systems,electric vehicles and electric tools is thus the problems that urgently need to be solved in the future.