Three-Dimensional Tubular MoS2/PANI Hybrid Electrode for High Rate Performance Supercapacitor

被引:235
作者
Ren, Lijun
Zhang, Gaini
Yan, Zhe
Kang, Liping
Xu, Hua
Shi, Feng
Lei, Zhibin
Liu, Zong-Huai [1 ]
机构
[1] Shaanxi Normal Univ, Minist Educ, Key Lab Appl Surface & Colloid Chem, Xian 710062, Peoples R China
基金
中国国家自然科学基金;
关键词
polyaniline; molybdenum disulfide; 3D tubular structure; capacitance; rate performance; cycling stability; POLYANILINE NANOWIRE ARRAYS; WALLED CARBON NANOTUBES; REDUCED GRAPHENE OXIDE; MOS2; NANOSHEETS; HIERARCHICAL NANOCOMPOSITES; COMPOSITE; FILM; POLYPYRROLE; NANOFIBER; NETWORKS;
D O I
10.1021/acsami.5b08474
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
By using three-dimensional (3D) tubular molybdenum disulfide (MoS2) as both an active material in electrochemical reaction and a framework to provide more paths for insertion and extraction of ions, PANT nanowire arrays with a diameter of 10-20 rim can be controllably grown on both the external and internal surface of 3D tubular MoS2 by in situ oxidative polymerization of aniline monomers and 3D tubular MoS2/PANI hybrid materials with different amounts of PANI are prepared. A controllable growth of PANI nanowire arrays on the tubular MoS2 surface provides an opportunity to optimize the capacitive performance of the obtained electrodes. When the loading amount of PANI is 60%, the obtained MoS2/PANI-60 hybrid electrode not only shows a high specific capacitance of 552 F/g at a current density of 0.5 A/g, but also gives excellent rate capability of 82% from 0.5 to 30 A/g. The remarkable rate performance can be mainly attributed to the architecture with synergistic effect between 3D tubular MoS2 and PANT nanowire arrays. Moreover, the MoS2/PANI-60 based symmetric supercapacitor also exhibits the excellent rate performance and good cycling stability. The specific capacitance based on the total mass of the two electrodes is 124 F/g at a current density of 1 A/g and 79% of its initial capacitance is remained after 6000 cycles. The 3D tubular structure provides a good and favorable method for improving the capacitance retention of PANI electrode.
引用
收藏
页码:28294 / 28302
页数:9
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