Hydrothermally grown 3D hierarchical TiO2 based on electrochemically anodized 1D TiO2 nanostructure for supercapacitor

被引:26
作者
Patil, Jyoti V. [1 ]
Mali, Sawanta S. [2 ]
Shaikh, Jasmin S. [1 ]
Bhat, Tejasvinee S. [1 ]
Hong, Chang Kook [2 ]
Kim, Jin Hyeok [3 ]
Patil, Pramod S. [1 ]
机构
[1] Shivaji Univ, Sch Nanosci & Technol Sci & Technol, Dept Phys, Thin Film Mat Lab, Kolhapur 416004, Maharashtra, India
[2] Chonnam Natl Univ, Dept Adv Chem Engn, Polymer Energy Mat Lab, Gwangju 61186, South Korea
[3] Chonnam Natl Univ, Dept Mat Sci & Engn, Gwangju 61186, South Korea
来源
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2018年 / 124卷 / 09期
基金
新加坡国家研究基金会;
关键词
SENSITIZED SOLAR-CELLS; HIGH-PERFORMANCE; NANOTUBE-ARRAYS; RUTILE TIO2; ENERGY-STORAGE; VALVE METALS; THIN-FILMS; DYE; OXIDE; ANATASE;
D O I
10.1007/s00339-018-1937-2
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In the present study, the simple facile chemical approaches have been used to grow one dimensional (1D) titanium dioxide (TiO2) nanotubes and three dimensional (3D) microflowers over 1D (3D-1D) TiO2 hierarchical for supercapacitor. Here, 1D TiO2 nanotubes are synthesized by electrochemical anodization and 3D-1D TiO2 microflowers have been successfully synthesized by hydrothermally grown 3D microflowers on predeposited 1D TiO2 nanotubes. Furthermore, TiO2 films have been characterized by X-ray diffraction, field emission scanning electron microscopy, energy dispersive X-ray spectrometry, contact angle measurements and electrochemical properties. The specific capacitance (Cs) values of 1D TiO2 and 3D-1D TiO2 have been calculated by cyclic voltammetry and charge discharge measurements. The improvement in Cs for 3D-1D nanostructure has been observed around 66.50 Fg(-1), which is greater than that of 1D nanostructure 54.09 Fg(-1) at 5 mV S-1 scan rate. Stability study revealed similar to 67% capacitance retention for 1D TiO2 nanotubes and 76% capacitance retention for 3D-1D TiO2 microflowers after 2000 cycles. These results indicate that the growth of 3D-1D TiO2 microflowers showed better performance than 1D TiO2 nanotubes for supercapacitor application.
引用
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页数:11
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