锂离子电池负极材料Li_(2)TiSiO_(5)制备及电子导电率提升的研究进展  

Progress in the preparation and electronic conductivity enhancement of Li_(2)TiSiO_(5),an anode material for lithiumion batteries

作　　者：黄皓 孙小飞 吴琪琥 孙丽侠 宋忠诚 HUANG Hao;SUN Xiaofei;WU Qihu;SUN Lixia;SONG Zhongcheng(School of Chemistry and Chemical Engineering,Jiangsu University of Technology,Changzhou 213001,China)

机构地区：[1]江苏理工学院化学化工学院,江苏常州213001

出　　处：《精细石油化工进展》2025年第2期31-36,共6页Advances in Fine Petrochemicals

基　　金：国家自然科学基金“基于多金属掺杂磷酸盐体系钠离子电池负极材料的制备及电化学性能的研究”(52171212)。

摘　　要：Li_(2)TiSiO_(5)是最近发现的一种锂离子电池负极材料,因为其具有稳定结构、较高的理论比容量以及稳定循环、高能量密度和优异的倍率性能,近年来越来越受到关注。本文简述了Li_(2)TiSiO_(5)的制备和改性方法,制备方法包括一锅法、溶胶-凝胶法、静电纺丝法和熔融固相法等,这4种方法都能合成结晶度较高的Li_(2)TiSiO_(5)材料,但无法避免Li_(2)TiSiO_(5)材料电化学性能差的缺点,可以通过掺杂、导电涂层表面改性和材料复合3种方法进行改性。Li_(2)TiSiO_(5)在提高容量方面和提高电池性能方面拥有很大的潜力,寻找可靠的改性材料是未来的重要研究方向。Li_(2)TiSiO_(5)is a recently discovered anode material for lithium‑ion batteries,which has received increasing attention in recent years because of its stable structure,high theoretical specific capacity,as well as stable cycling,high energy density and excellent rate performance.This paper briefly described the preparation of Li_(2)TiSiO_(5)and its modification methods,and reviewed the one‑pot,sol‑gel,electrostatic spinning,and melt methods for the preparation of Li_(2)TiSiO_(5),and found that all four methods were able to synthesize Li_(2)TiSiO_(5)materials with a high degree of crystallinity,but still couldn't avoid the drawback of the poor electrochemical properties of Li_(2)TiSiO_(5)materials.On the basis of the synthesis methods,three modification methods,doping,surface modification of conductive coatings,and material composites were reviewed,and it was also pointed out that Li_(2)TiSiO_(5)materials possessed a great potential to improve the capacity and enhance the performance of batteries in the future,and the search for reliable modification materials was an important research direction in the future.

关 键 词：Li_(2)TiSiO_(5) 负极材料 改性方法 电子导电率 比容量 

分 类 号：TM9[电气工程—电力电子与电力传动]