Ti_(3)C_(2)T_(x)基纳米复合材料的制备及其锂离子电池负极性能的改进作用  

Preparation of Ti_(3)C_(2)T_(x)-nanocomposites and its improvement of anode performance of lithium ion battery:a review

作　　者：申健 李丽 段广彬[1] SHEN Jian;LI Li;DUAN Guangbin(School of Materials Science and Engineering,University of Jinan,Jinan 250022,China)

机构地区：[1]济南大学材料科学与工程学院,山东济南250022

出　　处：《中国粉体技术》2021年第5期134-140,共7页China Powder Science and Technology

基　　金：国家自然科学基金项目,编号:51501072。

摘　　要：综述二维(2D)层状材料(MXene)的特性和零维(0D)、一维(1D)、2D等不同尺寸的活性材料的特点;总结Ti_(3)C_(2)T_(x)基-0D、Ti_(3)C_(2)T_(x)基-1D、Ti_(3)C_(2)T_(x)基-2D以及Ti_(3)C_(2)T_(x)过渡金属氧化物、Ti_(3)C_(2)T_(x)-Fe氧化物、Ti_(3)C_(2)T_(x)-Co磷化物等其他纳米材料的制备和性能。认为Ti_(3)C_(2)T_(x)作为活性材料,具有导电衬底甚至集流体的作用,其快速的离子或电子转移通道和结构稳定性的特点在混合电极中有巨大的应用潜力。提出可以通过合成结构可控的Ti_(3)C_(2)T_(x)微纳结构以及在其表面修饰不同的官能团等方法,以暴露更多的活性位点,提高离子或电子转移能力和结构稳定性;应克服由于Ti_(3)C_(2)T_(x)表面含有的氧官能团导致其发生降解反应,最终导致电池性能下降的问题;先进的原位表征手段可以在电池充放电过程中动态的记录电极及电解液的各种实时信息,便于研究SEI膜的形成和电极材料的体积膨胀;加强对软包电池性能的研究是Ti_(3)C_(2)T_(x)基负极材料能否商业化的关键。The properties of 2D layered materials(MXene)and active materials with different sizes,such as zero dimensional(0D),one dimensional(1D)and two dimensional(2D),were reviewed.Preparation and properties of the Ti_(3)C_(2)T_(x)-based-0D,Ti_(3)C_(2)T_(x)-based-1D,Ti_(3)C_(2)T_(x)-based-2D,and other nanomaterials such as Ti_(3)C_(2)T_(x)-excessive metal oxides,Ti_(3)C_(2)T_(x)-Fe oxides,and Ti_(3)C_(2)T_(x)-Co phosphides,were summarized.It is considered that Ti_(3)C_(2)T_(x),as an active material,has the function of conducting substrate and even collecting fluid,and its characteristics such as rapid ion or electron transfer channel and structural stability have great potential for application in hybrid electrodes.By synthesizing controllable Ti_(3)C_(2)T_(x) micro-nano structure and modifying different functional groups on its surface,it is proposed that more active sites can be exposed to improve the ability of ion or electron transfer and structural stability.The degradation reaction of Ti_(3)C_(2)T_(x) due to the oxygen functional groups on the surface of the Ti_(3)C_(2)T_(x) should be overcome,which eventually leads to the degradation of the battery performance.Advanced in-situ characterization means can dynamically record various real-time information of electrode and electrolyte during battery charging and discharging,which is convenient to study the formation of SEI film and the volume expansion of electrode material.The key to commercialization of Ti_(3)C_(2)T_(x) based anode materials is to strengthen the research on the performance of soft-pack batteries.

关 键 词：Ti_(3)C_(2)T_(x) 纳米复合材料 负极 锂离子电池 

分 类 号：TM911.18[电气工程—电力电子与电力传动]