尖晶石型Li_4Ti_5O_(12)负极材料的研究进展

Developments on Spinel Li_4Ti_5O_(12) as Anode Material

锂离子电池以其高功率和高能量密度等优点而被认为是电动汽车和其他便携式电器的最有前途的动力能源。提高电化学性能及其安全性是锂离子电池面临的主要挑战。尖晶石型钛酸锂因具有良好的结构稳定性、安全性以及高倍率充放电性能,成为锂离子动力电池负极材料的研究热点。综述了国内外钛酸锂负极材料的最新研究进展,包括:合成方法,掺杂、表面改性,重点阐述了碳材料表面改性及其应用,展望了钛酸锂作为混合动力电池负极材料的发展趋势。

Lithium-ion batteries with the high power and high energy density are one of the promising power sources for electric ve-hicles and other portable electric devices.The main challenges are to improve the safety and electrochemical performance of lithium ion batteries.The spinel Li4Ti5O12 has become a hot topic as a novel anode material of power lithium-ion battery due to its reliability and safety in the case of overcharge and quick charging performance.This paper reviews the developments of Li4Ti5O12,which in-clude the synthesized method,doping,surface modification.The surface modification of carbon materials and its application is also presented.In addition,the future developments on the hybrid electrical vehicles are proposed.