石墨烯
材料科学
阳极
复合数
电化学
锂(药物)
堆积
热液循环
图层(电子)
电极
化学工程
钼
离子
纳米技术
复合材料
化学
冶金
有机化学
医学
物理化学
内分泌学
工程类
作者
Bing Zhao,Zhixuan Wang,Yang Gao,Lu Chen,Mengna Lu,Z. Jiao,Yong Jiang,Yuanzhang Ding,Lingli Cheng
标识
DOI:10.1016/j.apsusc.2016.08.078
摘要
Layer-controlled MoS2/graphene aerogels (MoS2/GA) composites are synthesized by a facile hydrothermal route, in which few-layer (5–15 layers) MoS2 nanosheets with high crystalline are decorated on the surface of graphene nanosheets homogeneously and tightly. The number of the MoS2 layers can be easily controlled through adjusting the amount of molybdenum source in the reaction system. Moreover, the growth mechanism of the lay-controlled MoS2/GA composites is proposed. The three-dimensional MoS2/GA with macroporous micro-structure not only shortens the transportation length of electrons and ions, but also restrains the re-stacking of MoS2 effectively, stabilizing the electrode structure during repeated charging/discharging processes. Electrochemical tests demonstrate that this few-layer MoS2/GA composite exhibits a high reversible capacity of 1085.0 mAh g−1 at current density of 100 mA g−1, as well as extraordinarily high cycling stability and rate capability.
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