碳材料在钛酸锂负极材料中的应用

发布时间：2018-03-31 14:52

本文选题：钛酸锂　切入点：碳材料　出处：《化学进展》2017年01期

【摘要】：尖晶石型结构的钛酸锂由于具有极高的循环寿命和安全特性,被认为是目前最具应用前景的锂离子电池负极材料之一。但钛酸锂的电子电导率较低,且在充放电循环过程中易产生胀气问题,使其应用受到了极大的限制。将高导电、环境友好、化学和热性能稳定且结构多样的碳材料与钛酸锂形成复合负极材料,可有效提高材料的导电性,同时抑制胀气,对电极材料的性能优化起到非常关键的作用。本文综述了近年来碳材料在钛酸锂负极中的应用与研究进展,深入分析和探讨了碳材料对钛酸锂综合电化学性能的改善方式和改进效果,指出了不同形式的钛酸锂/碳复合材料在制备和应用中需要关注的问题,并对钛酸锂/碳复合材料未来可能的应用方向进行了展望。
[Abstract]:Lithium titanate with spinel structure is considered to be one of the most promising anode materials for lithium ion batteries due to its high cycle life and safety characteristics, but the electronic conductivity of lithium titanate is low. It is easy to produce flatulence in charge and discharge cycle, which greatly restricts its application. Carbon materials with high conductivity, environmental friendliness, stable chemical and thermal properties, and various structures form composite negative electrode materials with lithium titanate. It can effectively improve the conductivity of the materials and restrain flatulence, which plays a very important role in the optimization of the performance of electrode materials. In this paper, the application and research progress of carbon materials in lithium titanate anode are reviewed. The improvement methods and effects of carbon materials on the comprehensive electrochemical properties of lithium titanate were analyzed and discussed, and the problems needing attention in the preparation and application of different forms of lithium titanate / carbon composites were pointed out. The possible applications of lithium titanate / carbon composites in the future are also prospected.
【作者单位】：中国科学院金属研究所沈阳材料科学国家(联合)实验室;
【基金】：国家重大科学研究计划项目(No.2014C32402,2016YFA0200100,2016YFB0100100) 国家自然科学基金项目(No.51521091,51525206,51372253,U1401243) 中科院先导专项(No.XDA09010104)资助~~
【分类号】：TM912

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