Two-dimensional MoS2-graphene hybrid nanosheets for high gravimetric and volumetric lithium storage
Two-dimensional MoS2-graphene hybrid nanosheets for high gravimetric and volumetric lithium storage
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用于高重量和体积锂存储的二维MoS2-石墨烯杂化纳米片
DOI：
10.1016/j.apsusc.2017.12.020
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发表时间：
2018-04-15
影响因子：
6.7
通讯作者：
Yang, Shubin
中科院分区：
文献类型：
--
作者：
Deng, Yakai;Ding, Lixin;Yang, Shubin
利用高效的电化学剥离方法从组合的块状MoS 2-石墨晶片同时且可扩展地制造二维（2D）MoS 2-石墨烯（MoS 2-G）杂化物。所制备的2D MoS 2-G杂化物彼此紧密覆盖，横向尺寸为600 nm至几微米，并且可以直接组装成用于锂存储的柔性膜。当用作锂离子电池的负极材料时，所得MoS 2-G杂化膜表现出高的重量容量（在50 mA g（-1）下为750 mA h g（-1））和体积容量（在0.1 mA cm（-2）下为1200 mA h cm（-3））。这种优异的电化学性能应归功于独特的2D结构和良好的导电石墨烯网络，这不仅有利于锂离子的扩散，而且还提高了电子的快速转移，满足了快速储锂的动力学要求。(C)2017爱思唯尔B. V.保留所有权利。
Two-dimensional (2D) MoS2-graphene (MoS2-G) hybrid is fabricated simultaneously and scalablely with an efficient electrochemical exfoliation approach from the combined bulk MoS2-graphite wafer. The as-prepared 2D MoS2-G hybrid is tightly covered with each other with lateral sizes of 600 nm to few micrometers and can be directly assembled to flexible films for lithium storage. When used as anode material for lithium ion battery, the resultant MoS2-G hybrid film exhibits both high gravimetric (750 mA h g(-1) at 50 mA g(-1)) and volumetric capacities (1200 mA h cm(-3) at 0.1 mA cm(-2)). Such excellent electrochemical performance should attributed to the unique 2D structure and good conductive graphene network, which not only facilitates the diffusion of lithium ions, but also improves the fast transfer of electrons, satisfying the kinetics requirements for rapid lithium storage. (C) 2017 Elsevier B.V. All rights reserved.