Preparation and supercapacitive property of molybdenum disulfide (MoS2) nanoflake arrays- tungsten trioxide (WO3) nanorod arrays composite heterojunction: A synergistic effect of one-dimensional and two-dimensional nanomaterials
Preparation and supercapacitive property of molybdenum disulfide (MoS2) nanoflake arrays- tungsten trioxide (WO3) nanorod arrays composite heterojunction: A synergistic effect of one-dimensional and two-dimensional nanomaterials
复制标题
二硫化钼（MoS2）纳米片阵列-三氧化钨（WO3）纳米棒阵列复合异质结的制备及其超电容性能：一维和二维纳米材料的协同效应
DOI：
10.1016/j.electacta.2018.01.072
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发表时间：
2018-02-10
影响因子：
6.6
通讯作者：
Bashir, Sajid
中科院分区：
文献类型：
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作者：
Gong, Hanqin;Zheng, Feng;Bashir, Sajid
我们首先报道了一种直接生长在铜衬底上的二硫化钼（MoS 2）纳米片阵列（MNF）和三氧化钨（WO 3）纳米棒阵列（WNR）的复合材料。通过扫描电镜、透射电镜（SEM/TEM）、X射线衍射（XRD）、拉曼光谱（Raman）和X射线光电子能谱（XPS）对复合材料进行了表征。所有的证据表明，所获得的复合材料是一个异质结。采用循环伏安法（CV）、恒流充放电（GCD）和电化学阻抗谱（EIS）等技术系统地研究了MNF s-WNR复合异质结的超电容性能。该异质结在0.5 A g（-1）下具有522 F g（-1）的高比电容，5000次循环后的高电容保持率（95%）和低电荷转移电阻（1.0 Ω）。这种异质结兼有MoS 2和WO 3的优点，是一种较好的超级电容电极材料。(c)2018爱思唯尔有限公司版权所有
We first report a composite of molybdenum disulfide (MoS2) nanoflake arrays (MNFs) and tungsten trioxide (WO3) nanorod arrays (WNRs) directly grown on a copper (Cu) substrate. This composite is characterized in detail by scanning and transmission electron microscopes (SEM/TEM), X-ray diffraction (XRD), Raman and X-ray photoelectron spectroscopy (XPS). All of the evidences indicate that the obtained composite is a heterojunction. The supercapacitive properties of MNFs-WNRs composite heterojunction are measured systematically by using cyclic voltammetry (CV), galvanostatic charge-discharge (GCD) and electrochemical impedance spectroscopy (EIS) techniques. The heterojunction exhibits a high specific capacitance of 522 F g(-1) at 0.5 A g(-1), a high capacitance retention (95%) after 5000 cycles and a low charge transfer resistance (1.0 Omega). And this kind of heterojunction has advantages of both MoS2 and WO3, which can be a better candidate for supercapacitive electrode material. (c) 2018 Elsevier Ltd. All rights reserved.