标题：Hierarchically Layered MoS2/Mn3O4Hybrid Architectures for Electrochemical Supercapacitors with Enhanced Performance
作者：Wang, Mengqiao ;Fei, Huifang ;Zhang, Peng ;Yin, Longwei
作者机构：[Wang, Mengqiao ;Fei, Huifang ;Zhang, Peng ;Yin, Longwei ] Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry 更多
摘要：We for the first time report a novel kind of supercapacitor using hierarchical MoS2/Mn3O4hybrid architectures as electrodes based on layered MoS2and Mn3O4nanoparticles via a simple and low-cost hydrothermal and chemical precipitation route. The Mn3O4nanoparticles are homogeneously incorporated into thin layers of MoS2hierarchical architectures. The cycle stability of MoS2/Mn3O4nanostructure is greatly improved, still reserves a capacity of 119.3 F g-1after 2000 cycles at a current density of 1.0 A g-1, about 69.3% reservation of the initial capacitance, more than two times higher than that of pure layered MoS2electrode. The good performance is due to the synergistic effect between the layered MoS2and Mn3O4nanoparticles. The layered hybrid displays a larger specific surface to provide enough active sites for the redox reaction and shorten the distance of charge transfer for ions and electrons. While Mn3O4acts as a holder to enhance the stability of the MoS2framework and provides additional capacity. The Mn3O4nanoparticles can serve as a holder and prevent MoS2nanosheets from restacking. Moreover, the MoS2sheets act as subtracts to improve to the conductivity of Mn3O4. The layered MoS2/Mn3O4hybrid inspires a new way of designing high-performance electrochemical supercapacitors.
© 2016 Published by Elsevier Ltd.