Synthesis, Characterization and Electrochemical Properties of α-MnO2 Nanowires as Electrode Material for Supercapacitors

被引：29
|
作者：
Shah, Hidayat Ullah [1 ]
Wang, Fengping [1 ]
Javed, Muhammad Sufyan [2 ,3 ]
Saleem, Rabia [4 ]
Nazir, Muhammad Shahzad [5 ]
Zhan, Jinbing [1 ]
Khan, Zia Ul Haq [6 ]
Farooq, Muhammad Umer [7 ]
Ali, Shujaat [1 ]
机构：
[1] Univ Sci & Technol Beijing, Sch Math & Phys, Dept Phys, Beijing 100083, Peoples R China
[2] Jinan Univ, Guangzhou Key Lab Vacuum Coating Technol & New En, Guangdong Prov Engn Technol Res Ctr Vacuum Coatin, Siyuan Lab,Dept Phys, Guangzhou 510632, Guangdong, Peoples R China
[3] COMSATS Univ, Dept Phys, Lahore 54000, Pakistan
[4] COMSATS Univ, Dept Math, Lahore 54000, Pakistan
[5] South China Univ Technol, Energy Res Inst, Sch Elect Power, Guangzhou 510640, Guangdong, Peoples R China
[6] COMSATS Univ, Dept Environm Sci, Vehari 61100, Pakistan
[7] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China
来源：
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2018年 / 13卷 / 07期
基金：
中国国家自然科学基金;
关键词：
Hydrothermal; MnO2; Nanowires; Supercapacitors: Electrodes; CARBON TEXTILE; PERFORMANCE; GROWTH; NANOSHEETS;
D O I：
10.20964/2018.07.48
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
High purity alpha-MnO2 rectangular nanowires are synthesized by a facile one-step hydrothermal method. The morphology and composition of alpha-MnO2 nanowires are characterized by X-ray diffraction, energy-dispersive X-ray spectroscopy (EDX), Field emission scanning electron microscopy (FESEM), X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FTIR) spectral techniques. The electrochemical properties of alpha-MnO2 nanowires have been studied as electrode material for supercapacitors. The alpha-MnO2 nanowires exhibit a high specific capacitance of 362 Fg(-1) at a current density of 1.0 Ag-1 with a good cycling stability (maintained 83% after 5000 cycles). These results indicate its promising applications as a high-performance electrode material for electrochemical energy storage.
引用
收藏
页码：6426 / 6435
页数：10
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