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首页> 外文期刊>RSC Advances >A flexible free-standing defect-rich MoS2/graphene/carbon nanotube hybrid paper as a binder-free anode for high-performance lithium ion batteries
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A flexible free-standing defect-rich MoS2/graphene/carbon nanotube hybrid paper as a binder-free anode for high-performance lithium ion batteries

机译：一种柔性的，独立的，富含缺陷的MoS2 /石墨烯/碳纳米管混合纸，可作为高性能锂离子电池的无粘合剂阳极

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摘要

The rapid development of flexible energy storage devices has motivated people to seek reliable electrodes with both high mechanical flexibility and excellent electrochemical performance. Herein, we demonstrate a facile and scalable process to fabricate a flexible free-standing defect-rich MoS2/graphene/carbon nanotube (dr-MGC) hybrid paper, which can be directly used as a flexible binder-free anode for lithium ion batteries. Benefiting from the excellent dispersibility of defect-rich MoS2 nanosheets (dr-MoS2 NSs) and graphene oxide/carbon nanotube (GO/CNT) hybrids in aqueous solution, a unique three-dimensional (3D) nanoporous architecture with ultrathin dr-MoS2 NSs homogeneously embedded in graphene/CNT frameworks is nicely constructed by a simple vacuum filtration and thermal reduction process. As a consequence, the flexible free-standing dr-MGC21 hybrid paper exhibits a high reversible capacity of 1137.2 mA h g(-1) at a current density of 0.1 A g(-1) with excellent cyclic stability and rate capability. The superior electrochemical performance of the dr-MGC hybrid paper is ascribed to the 3D nanoporous architecture as well as the synergistic effect between the dr-MoS2 NSs and conductive graphene/CNT network. Moreover, the idea of utilizing graphene/CNT hybrids as flexible conductive frameworks provides a novel pathway for the large-scale fabrication of various flexible binder-free electrodes for high-performance flexible energy storage devices.
机译：柔性储能装置的迅速发展促使人们寻求具有高机械柔性和优异的电化学性能的可靠电极。在本文中，我们演示了一种简便且可扩展的方法来制造柔性的自立式富含缺陷的MoS2 /石墨烯/碳纳米管（dr-MGC）混合纸，该纸可直接用作锂离子电池的柔性无粘结剂阳极。得益于富含缺陷的MoS2纳米片（dr-MoS2 NSs）和氧化石墨烯/碳纳米管（GO / CNT）杂化物在水溶液中的出色分散性，独特的三维（3D）纳米多孔结构具有均匀的超薄dr-MoS2 NSs通过简单的真空过滤和热还原工艺可以很好地构建嵌入石墨烯/ CNT框架中的材料。因此，柔性的独立式dr-MGC21杂化纸在电流密度为0.1 A g（-1）时表现出1137.2 mA h g（-1）的高可逆容量，具有出色的循环稳定性和倍率性能。 dr-MGC杂化纸的卓越电化学性能归因于3D纳米多孔结构以及dr-MoS2 NSs与导电石墨烯/ CNT网络之间的协同效应。而且，利用石墨烯/ CNT杂化物作为柔性导电框架的想法为大规模制造用于高性能柔性储能装置的各种柔性无粘合剂电极提供了一条新颖的途径。

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