Hydrothermal preparation of MoS2 nanoflake arrays on Cu foil with enhanced supercapacitive property
Hydrothermal preparation of MoS2 nanoflake arrays on Cu foil with enhanced supercapacitive property
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铜箔上水热法制备具有增强超级电容性能的MoS2纳米片阵列
DOI：
10.1016/j.electacta.2017.01.012
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发表时间：
2017-02-10
影响因子：
6.6
通讯作者：
Zhen, Qiang
中科院分区：
文献类型：
--
作者：
Gong, Hanqin;Zheng, Feng;Zhen, Qiang
以Cu箔为衬底，（NH4）(6)Mo7O24中心点4H(2)O为钼源，CN2H4S为硫源和还原剂，（CH3）(2)CHOH为分散剂，通过水热法直接合成了六边形MoS2纳米片阵列（h-MNFs）。采用扫描电镜（SEM）、透射电镜（TEM）、x射线衍射（XRD）、x射线光电子能谱（XPS）和拉曼显微镜（RM）分析了MNFs的微观形貌和结晶度。以不同水热反应时间的样品为基础，研究了mfs的形态变化和生长过程。此外，还研究了MNFs的超电容性能。研究发现，mnf在5000次循环后具有良好的循环可逆性（93%）和稳定性（90%），具有相对较高的比电容（420 Fg(-1)），较低的电荷传输电阻（1.8 ω），可用能量密度为21至17 W h kg(-1)，相应的实际功率密度为150至3000W kg（-1）。(C) 2017 Elsevier Ltd.版权所有。
Hexagonal MoS2 nanoflake arrays (h-MNFs) have been synthesized directly via hydrothermal route with Cu foil as substrate, (NH4)(6)Mo7O24 center dot 4H(2)O as the molybdenum source, CN2H4S as the sulfur source and reductant, and (CH3)(2)CHOH as the dispersant. The micro morphology and crystallinity of MNFs are analyzed by means of scanning electron microscopy (SEM), transmission electron microscopy (TEM), Xray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Raman microscopy (RM). The morphological change and growth process of MNFs are investigated, basing on the samples at different hydrothermal reaction times. Moreover, the supercapacitive properties of MNFs have been examined. It is found that MNFs has a good cycling invertibility (93%) and stability (90%) after 5000 cycles, a relatively high specific capacitance (420 Fg(-1)), a low charge transport resistance (1.8 Omega) and available energy densities ranging from 21 to 17 W h kg(-1) with corresponding practical power densities ranging from 150 to 3000W kg(-1). (C) 2017 Elsevier Ltd. All rights reserved.