Abstract: As a kind of Li-ion battery anode materials,TiO₂ is renowned for its high security. In order to compensate its low conductivity of electron and lithium,TiO₂ material has been designed as a variety of nano structures and prepared into composites with materials with good electrical conductivity. In view of the recent research status of TiO₂ based composite anode materials for Li-ion batteries,this paper has introduced some methods to prepare TiO₂ based composite anode materials with carbon,silicon and metal materials. Moreover,advantages and disadvantages of these three kinds of materials were presented. Carbon materials are mature but they are flammable. Silicon materials possess high capacity,but their cycle performance is poor and the security is not good. Metal materials possess high electrical conductivity and are easy to alloy with other materials,but they are also poor in cycle performance. At last,it is proposed that the combining of carbon and TiO₂ will be a promising way for industrial production of composite anode materials,and will be one of the most important research directions of Li-ion batteries.

Key words: titanium dioxide, Li-ion battery, anode, composites, electrochemistry

摘要： TiO₂锂离子电池负极材料以其安全性高而著称，其被设计为各种纳米结构并与其他导电性好的材料制备成复合材料，以弥补其导电、导锂能力的不足。本文针对近年来TiO₂基复合材料作为锂离子电池负极材料的研究现状，介绍了碳类、硅类和金属类材料与TiO₂进行复合制备负极材料的可行方法，并分别分析了这3类材料的优缺点：碳类负极材料技术成熟，但有易燃的缺点；硅类负极材料理论容量高，但循环性能差且安全性不好；金属类负极材料普遍导电性好，且易与其他材料合金化，但循环性能差。最终提出，由于碳类负极材料技术成熟，且TiO₂可弥补其易燃的缺点；结合碳基材料优良导电性能与TiO₂优异安全性能的复合材料最有望实现工业化，将是锂离子电池领域重要的研究方向之一。

关键词: 二氧化钛, 锂离子电池, 负极, 复合材料, 电化学