Graphene-based three-dimensional hierarchical sandwich-type architecture for high performance supercapacitors

RSC Advances ◽  
2014 ◽  
Vol 4 (17) ◽  
pp. 8466-8471 ◽  
Author(s):  
Yufei Zhang ◽  
Mingze Ma ◽  
Jun Yang ◽  
Wei Huang ◽  
Xiaochen Dong

A facile two-step method is developed for large-scale preparation of graphene-based three-dimensional hierarchical sandwich-type architecture (graphene/carbon nanotubes (CNTs)/Mn2O3) for high performance supercapacitor.

2015 ◽  
Vol 64 (3) ◽  
pp. 86-89 ◽  
Author(s):  
Junkai Wang ◽  
Xiangong Deng ◽  
Haijun Zhang ◽  
Feng Cheng ◽  
Faliang Li ◽  
...  

Nanomaterials ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 714 ◽  
Author(s):  
Ting-Ting Li ◽  
Yanqin Zhong ◽  
Mengxue Yan ◽  
Wei Zhou ◽  
Wenting Xu ◽  
...  

In this study, a self-made continuous needleless dynamic linear electrospinning technique is employed to fabricate large-scale graphene (Gr)/carbon nanotubes (CNT)/polyvinyl alcohol (PVA)/sodium alginate (SA) nanofibrous membranes. The synergistic effect of Gr and CNT fillers in the PVA/SA membrane is explored in depth by changing the volume ratio (v/v) of Gr and CNT as 10:0, 8:2, 6:4, 4:6, 2:8, and 0:10. Microstructure, functional group, conductivity, and hydrophilicity of PVA/SA/Gr/CNT membranes was characterized. Results show that the linear electrode needleless electrospinning technique can be spun into 200-nm diameter fibers. The PVA/SA/Gr/CNT fibrous membrane has good hydrophilicity and thermal stability. A Gr/CN ratio of 6:4 possessed the optimal synergistic effect, which showed the lowest surface resistivity of 2.53 × 103 Ω/m2. This study will provide a reference for the large-scale preparation of nanofibrous membrane used as a artificial nerve conduit in the future.


2019 ◽  
Vol 9 (3) ◽  
pp. 476 ◽  
Author(s):  
Jianlei Cui ◽  
Yang Cheng ◽  
Jianwei Zhang ◽  
Huanhuan Mei ◽  
Xuewen Wang

Carbon nanotubes (CNTs) have excellent performance, which means that they could be better electrical conductors. However, the problem of the connection of CNTs to electrodes limits their application. Particularly, improving connection efficiency while ensuring the quality of the connection is a big challenge, because it is difficult to form Ohmic contact between CNTs and electrodes. To address this issue, we propose the use of a femtosecond laser to irradiate the contact surface between the CNTs and the electrodes to obtain a good connection quality and electrical performance. At the same time, since the laser-induced connection acts on all the contact surfaces in the irradiation area, the connection efficiency can be improved, which provides a new idea for the large-scale preparation of the connection.


2011 ◽  
Vol 21 (43) ◽  
pp. 17366 ◽  
Author(s):  
Hui Bi ◽  
Fuqiang Huang ◽  
Jun Liang ◽  
Yufeng Tang ◽  
Xujie Lü ◽  
...  

2013 ◽  
Vol 652-654 ◽  
pp. 258-261
Author(s):  
Yu Liang

The three-dimensional dandelion-like zinc oxide nanostructure composed of single-crystal ZnO nanorods was prepared by means of Kirkendall effect while using solvothermal method and taking Zn powder as the source of zinc. In the paper, the composition, structure and appearance of the sample were studied by means of XRD, SEM, RDS, SEAD, TEM, HRTEM and other methods. The method was widely used as a new method for the large-scale preparation of nano/micro zinc oxide material.


2003 ◽  
Vol 15 (17) ◽  
pp. 3256-3260 ◽  
Author(s):  
Yujun Qin ◽  
Luqi Liu ◽  
Jiahua Shi ◽  
Wei Wu ◽  
Jun Zhang ◽  
...  

1998 ◽  
Vol 41 (4) ◽  
pp. 431-437 ◽  
Author(s):  
Baohe Chang ◽  
Sishen Xie ◽  
Wenzhi Li ◽  
Chaoying Wang ◽  
Weiya Zhou ◽  
...  

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