Design and synthesis of hierarchical mesoporous WO3-MnO2 composite nanostructures on carbon cloth for high-performance supercapacitors

2017 ◽  
Vol 3 (1) ◽  
Author(s):  
Pragati A. Shinde ◽  
Vaibhav C. Lokhande ◽  
Amar M. Patil ◽  
Taeksoo Ji ◽  
Chandrakant D. Lokhande

AbstractTo enhance the energy density and power performance of supercapacitors, the rational design and synthesis of active electrode materials with hierarchical mesoporous structure is highly desired. In the present work, fabrication of high-performance hierarchical mesoporous WO

Author(s):  
Mohan Reddy Pallavolu ◽  
Ramesh Reddy N ◽  
Hemachandra Rao Goli ◽  
Arghya Narayan Banerjee ◽  
G. Rajasekhara Reddy ◽  
...  

Rational design of highly conductive and redox-active electrode materials composed of metal chalcogenides and carbon composites has attracted promising attention for the development of high-performance energy storage devices. Herein, cost-effective...


energyo ◽  
2019 ◽  
Author(s):  
Pragati A. Shinde ◽  
Vaibhav C. Lokhande ◽  
Amar M. Patil ◽  
Taeksoo Ji ◽  
Chandrakant D. Lokhande

Author(s):  
Wen-Wei Song ◽  
Bing Wang ◽  
Xiao-Man Cao ◽  
Qiang Chen ◽  
Zhengbo Han

Metal-organic frameworks (MOFs)-derived transition-metal oxides and transition-metal phosphides have great application potential as electrode materials for supercapacitors, owing to the excellent redox activity and high conductivity. However, their electrochemical performances...


Author(s):  
Dai Jiu Yi ◽  
Soram Bobby Singh ◽  
Nam Hoon Kim ◽  
Joong Hee Lee

The rational design of free-standing hierarchic core–shell nanoporous architectures is a good strategy for fabricating next-generation electrode materials for application to electrochemical energy conversion/storage systems. Herein, hierarchical core–shell 3D Co9S8@Nix:Moy–Se...


CrystEngComm ◽  
2015 ◽  
Vol 17 (48) ◽  
pp. 9336-9347 ◽  
Author(s):  
Jingyun Ma ◽  
Longwei Yin ◽  
Tairu Ge

We report on the rational design and synthesis of three dimensional (3D) Cu-doped NiO architectures with an adjustable chemical component, surface area, and hierarchically porous structure as anodes for lithium ion battery.


2021 ◽  
Vol 3 ◽  
Author(s):  
Subash Pandey ◽  
Shova Neupane ◽  
Dipak Kumar Gupta ◽  
Anju Kumari Das ◽  
Nabin Karki ◽  
...  

In this study, we report on a combined approach to preparing an active electrode material for supercapattery application by making nanocomposites of Polyaniline/Cerium (PANI/Ce) with different weight percentages of magnetite (Fe3O4). Fourier-transform infrared spectroscopy (FTIR) and x-ray diffraction (XRD) analyses supported the interaction of PANI with Ce and the formation of the successful nanocomposite with magnetite nanoparticles. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) analyses showed the uniform and porous morphology of the composites. Cyclic voltammetry (CV) and galvanostatic charge–discharge (GCD) were used to test the supercapattery behavior of the nanocomposite electrodes in 1.0 M H2SO4. It was found that the supercapattery electrode of PANI/Ce+7 wt.% Fe3O4 exhibited a specific capacity of 171 mAhg−1 in the potential range of −0.2 to 1.0 V at the current density of 2.5 Ag−1. Moreover, PANI/Ce+7 wt.% Fe3O4 revealed a power density of 376.6 Wkg−1 along with a maximum energy density of 25.4 Whkg−1 at 2.5 Ag−1. Further, the cyclic stability of PANI/Ce+7 wt.% Fe3O4 was found to be 96.0% after 5,000 cycles. The obtained results suggested that the PANI/Ce+Fe3O4 nanocomposite could be a promising electrode material candidate for high-performance supercapattery applications.


2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Wenfu Xie ◽  
Jianming Li ◽  
Yuke Song ◽  
Shijin Li ◽  
Jianbo Li ◽  
...  

AbstractZinc–air batteries (ZABs) hold tremendous promise for clean and efficient energy storage with the merits of high theoretical energy density and environmental friendliness. However, the performance of practical ZABs is still unsatisfactory because of the inevitably decreased activity of electrocatalysts when assembly into a thick electrode with high mass loading. Herein, we report a hierarchical electrocatalyst based on carbon microtube@nanotube core–shell nanostructure (CMT@CNT), which demonstrates superior electrocatalytic activity for oxygen reduction reaction and oxygen evolution reaction with a small potential gap of 0.678 V. Remarkably, when being employed as air–cathode in ZAB, the CMT@CNT presents an excellent performance with a high power density (160.6 mW cm−2), specific capacity (781.7 mAhg Zn −1 ) as well as long cycle stability (117 h, 351 cycles). Moreover, the ZAB performance of CMT@CNT is maintained well even under high mass loading (3 mg cm−2, three times as much as traditional usage), which could afford high power density and energy density for advanced electronic equipment. We believe that this work is promising for the rational design of hierarchical structured electrocatalysts for advanced metal-air batteries.


2018 ◽  
Vol 6 (6) ◽  
pp. 7250-7256 ◽  
Author(s):  
Tao Chen ◽  
Jiang Zhou ◽  
Guozhao Fang ◽  
Yan Tang ◽  
Xiaoping Tan ◽  
...  

CrystEngComm ◽  
2019 ◽  
Vol 21 (3) ◽  
pp. 470-477 ◽  
Author(s):  
Huihua Peng ◽  
Chuan Jing ◽  
Jie Chen ◽  
Deyi Jiang ◽  
Xiaoying Liu ◽  
...  

Rational design of the crystal structures of electrode materials is considered as an important strategy to construct high-performance supercapacitors.


2020 ◽  
Vol 49 (1) ◽  
pp. 196-202 ◽  
Author(s):  
Haoyan Liang ◽  
Tiesong Lin ◽  
Shengyao Wang ◽  
Henan Jia ◽  
Chun Li ◽  
...  

Rational design of self-supported electrode materials is important to develop high-performance supercapacitors.


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