scholarly journals Facile synthesis of a Bi2MoO6/TiO2 nanotube arrays composite by the solvothermal method and its application for high-performance supercapacitor

RSC Advances ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 4693-4699 ◽  
Author(s):  
Jiang Wen ◽  
Shupei Sun ◽  
Bo Zhang ◽  
Nianfeng Shi ◽  
Xiaoming Liao ◽  
...  

In this study, bismuth molybdate/titania nanotube arrays (Bi2MoO6/TNTs) as a binder-free electrode for supercapacitors were fabricated via a facile solvothermal method.

Materials ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 510
Author(s):  
Wangzhu Cao ◽  
Kunfeng Chen ◽  
Dongfeng Xue

Nanoscale engineering of regular structured materials is immensely demanded in various scientific areas. In this work, vertically oriented TiO2 nanotube arrays were grown by self-organizing electrochemical anodization. The effects of different fluoride ion concentrations (0.2 and 0.5 wt% NH4F) and different anodization times (2, 5, 10 and 20 h) on the morphology of nanotubes were systematically studied in an organic electrolyte (glycol). The growth mechanisms of amorphous and anatase TiO2 nanotubes were also studied. Under optimized conditions, we obtained TiO2 nanotubes with tube diameters of 70–160 nm and tube lengths of 6.5–45 μm. Serving as free-standing and binder-free electrodes, the kinetic, capacity, and stability performances of TiO2 nanotubes were tested as lithium-ion battery anodes. This work provides a facile strategy for constructing self-organized materials with optimized functionalities for applications.


RSC Advances ◽  
2016 ◽  
Vol 6 (68) ◽  
pp. 63642-63651 ◽  
Author(s):  
Zicheng Wang ◽  
Yan Wang ◽  
Xia Shu ◽  
Cuiping Yu ◽  
Jianfang Zhang ◽  
...  

Highly ordered TiO2 nanotube arrays (TNAs) modified by other materials with enhanced conductivity and capacitance have been considered to be promising anode materials for supercapacitors.


2018 ◽  
Vol 215 (24) ◽  
pp. 1800436 ◽  
Author(s):  
Ruiyu Bao ◽  
Junfeng Geng ◽  
James A. Sullivan ◽  
Jianxin Xia ◽  
Wenzhong Wang ◽  
...  

Nanomaterials ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 2924
Author(s):  
Suriyakumar Dasarathan ◽  
Mukarram Ali ◽  
Tai-Jong Jung ◽  
Junghwan Sung ◽  
Yoon-Cheol Ha ◽  
...  

Vertically aligned Fe, S, and Fe-S doped anatase TiO2 nanotube arrays are prepared by an electrochemical anodization process using an organic electrolyte in which lactic acid is added as an additive. In the electrolyte, highly ordered TiO2 nanotube layers with greater thickness of 12 μm, inner diameter of approx. 90 nm and outer diameter of approx. 170 nm are successfully obtained. Doping of Fe, S, and Fe-S via simple wet impregnation method substituted Ti and O sites with Fe and S, which leads to enhance the rate performance at high discharge C-rates. Discharge capacities of TiO2 tubes increased from 0.13 mAh cm−2(bare) to 0.28 mAh cm−2 for Fe-S doped TiO2 at 0.5 C after 100 cycles with exceptional capacity retention of 85 % after 100 cycles. Owing to the enhancement of thermodynamic and kinetic properties by doping of Fe-S, Li-diffusion increased resulting in remarkable discharge capacities of 0.27 mAh cm−2 and 0.16 mAh cm−2 at 10 C, and 30 C, respectively.


2019 ◽  
Vol 366 ◽  
pp. 163-171 ◽  
Author(s):  
Jian Zhou ◽  
Miao Guo ◽  
Longlu Wang ◽  
Yangbin Ding ◽  
Zezhong Zhang ◽  
...  

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