石墨烯在锂离子电池领域研究现状的分析

Analysis of the Research Status of Graphene in the Field of Lithium-ion Batteries

随着近年来中国对锂电行业的持续投入,中国已经是锂离子电池第一生产、消费大国,在光电储能、新能源车辆、3C行业锂离子电池已经是不可或缺的存在。锂离子电池在能量密度、快速充电、循环寿命等方面不能满足新的需求,其短板仍然制约着锂离子电池发展。石墨烯(Graphene)作为一种新型的二维碳材料,是目前为止最薄、导热系数最高的材料,具有非常好的热传导性能和导电性,电子(e-)在其中的运动速度远远超过常规导体,且迁移率受温度变化的影响较小。基于以上众多优良的特性,石墨烯的添加有望提升锂离子电池的倍率性能、循环寿命及能量密度。本文通过分析石墨烯国内外研究,以及其在储能领域尤其锂离子电池正负极领域的研究现状,梳理、研究了石墨烯在锂离子电池领域的研究情况,便于后续开展石墨烯锂离子电池的研究开发工作。

With China's continuous investment in the lithium battery industry in recent years,China has become the first producer and consumer of lithium-ion batteries,and lithium-ion batteries in the photoelectric energy storage,new energy vehicles,and 3C industries have become indispensable.Lithium-ion batteries can not meet new needs in terms of energy density,fast charging,cycle life,etc.,and their shortcomings still restrict the development of lithium-ion batteries.Graphene as a new two-dimensional carbon material is by far the thinnest,the highest thermal conductivity of the material,with very good thermal conductivity and electrical conductivity,electrons(e-)in which the speed of motion far more than conventional conductors,and the mobility is less affected by temperature changes.Based on the above many excellent characteristics,the addition of graphene is expected to improve the magnification performance,cycle life and energy density of lithium-ion batteries.By analyzing the research of graphene at home and abroad,as well as its research status in the field of energy storage,especially in the field of positive and negative electrodes of lithium-ion batteries,this paper sorts out and studies the research situation of graphene in the field of lithium-ion batteries,which is convenient for the follow-up research and opening up of graphene lithium-ion batteries.