Functionalization of wet-spun graphene films using aminophenol molecules for high performance supercapacitors

2018 ◽  
Vol 2 (12) ◽  
pp. 2313-2319 ◽  
Author(s):  
Muhammad Salman ◽  
Xingyuan Chu ◽  
Tieqi Huang ◽  
Shengying Cai ◽  
Qiuyan Yang ◽  
...  
Keyword(s):  
High Performance ◽  
Graphene Film ◽  
Wet Spinning ◽  
Functionalized Graphene ◽  
Graphene Films

Aminophenol isomer functionalized graphene film electrodes are fabricated with wet-spinning technology for high performance supercapacitors.

scholarly journals Ultratough graphene–black phosphorus films

2020 ◽  
Vol 117 (16) ◽  
pp. 8727-8735 ◽  
Author(s):  
Tianzhu Zhou ◽  
Hong Ni ◽  
Yanlei Wang ◽  
Chao Wu ◽  
Hao Zhang ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Graphene Oxide ◽  
Graphene Film ◽  
Crack Arrest ◽  
Covalent Bonding ◽  
Black Phosphorus ◽  
Stacking Interactions ◽  
Functionalized Graphene ◽  
High Toughness ◽  
Graphene Films

Graphene-based films with high toughness have many promising applications, especially for flexible energy storage and portable electrical devices. Achieving such high-toughness films, however, remains a challenge. The conventional mechanisms for improving toughness are crack arrest or plastic deformation. Herein we demonstrate black phosphorus (BP) functionalized graphene films with record toughness by combining crack arrest and plastic deformation. The formation of covalent bonding P-O-C between BP and graphene oxide (GO) nanosheets not only reduces the voids of GO film but also improves the alignment degree of GO nanosheets, resulting in high compactness of the GO film. After further chemical reduction and π-π stacking interactions by conjugated molecules, the alignment degree of rGO nanosheets was further improved, and the voids in lamellar graphene film were also further reduced. Then, the compactness of the resultant graphene films and the alignment degree of reduced graphene oxide nanosheets are further improved. The toughness of the graphene film reaches as high as ∼51.8 MJ m−3, the highest recorded to date. In situ Raman spectra and molecular dynamics simulations reveal that the record toughness is due to synergistic interactions of lubrication of BP nanosheets, P-O-C covalent bonding, and π-π stacking interactions in the resultant graphene films. Our tough black phosphorus functionalized graphene films with high tensile strength and excellent conductivity also exhibit high ambient stability and electromagnetic shielding performance. Furthermore, a supercapacitor based on the tough films demonstrated high performance and remarkable flexibility.

Flexible quasi-solid-state planar micro-supercapacitor based on cellular graphene films

2017 ◽  
Vol 4 (6) ◽  
pp. 1145-1150 ◽  
Author(s):  
Yuanlong Shao ◽  
Jianmin Li ◽  
Yaogang Li ◽  
Hongzhi Wang ◽  
Qinghong Zhang ◽  
...  
Keyword(s):  
Solid State ◽  
Polyvinyl Alcohol ◽  
High Performance ◽  
Active Material ◽  
Graphene Film ◽  
Gel Electrolyte ◽  
Porous Graphene ◽  
Graphene Films

Quasi-solid-state micro-supercapacitors with cellular graphene film as the active material and polyvinyl alcohol/H3PO4as the gel electrolyte have been fabricated. The 3D porous graphene films not only serve as high performance supercapacitor electrodes, but also provide an abundant ion reservoir for the gel electrolyte.

High rate capability supercapacitors assembled from wet-spun graphene films with a CaCO3 template

2015 ◽  
Vol 3 (5) ◽  
pp. 1890-1895 ◽  
Author(s):  
Tieqi Huang ◽  
Bingna Zheng ◽  
Zheng Liu ◽  
Liang Kou ◽  
Chao Gao
Keyword(s):  
Graphene Film ◽  
Rate Capability ◽  
High Rate ◽  
Wet Spinning ◽  
High Rate Capability ◽  
Graphene Films

We fabricated continuous wrinkle-structured graphene film electrodes by a wet-spinning method.

scholarly journals Vertical monolithic integration of wide- and narrow-bandgap semiconductor nanostructures on graphene films

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Youngbin Tchoe ◽  
Janghyun Jo ◽  
HoSung Kim ◽  
Heehun Kim ◽  
Hyeonjun Baek ◽  
...  
Keyword(s):  
Graphene Film ◽  
Monolithic Integration ◽  
Hybrid Nanostructures ◽  
Dual Wavelength ◽  
Multilayer Graphene ◽  
Graphene Films ◽  
Transmission Electron ◽  
Zno Nanotubes ◽  
Metal Organic ◽  
Hybrid Configuration

AbstractWe report monolithic integration of indium arsenide (InAs) nanorods and zinc oxide (ZnO) nanotubes using a multilayer graphene film as a suspended substrate, and the fabrication of dual-wavelength photodetectors with the hybrid configuration of these materials. For the hybrid nanostructures, ZnO nanotubes and InAs nanorods were grown vertically on the top and bottom surfaces of the graphene films by metal-organic vapor-phase epitaxy and molecular beam epitaxy, respectively. The structural, optical, and electrical characteristics of the hybrid nanostructures were investigated using transmission electron microscopy, spectral photoresponse analysis, and current–voltage measurements. Furthermore, the hybrid nanostructures were used to fabricate dual-wavelength photodetectors sensitive to both ultraviolet and mid-infrared wavelengths.

Bioinspired strengthening and toughening carbon nanotube@polyaniline/graphene film using electroactive biomass as glue for high rate, volumetric capacitance and low-temperature tolerance flexible supercapacitor

2021 ◽  
Author(s):  
Dan Wu ◽  
Chuying Yu ◽  
Wenbin Zhong
Keyword(s):  
Carbon Nanotube ◽  
High Performance ◽  
Graphene Film ◽  
Temperature Tolerance ◽  
High Rate ◽  
Flexible Supercapacitor ◽  
Low Temperature Tolerance ◽  
Electrical Devices ◽  
Brick And Mortar ◽  
Volumetric Capacitance

Natural nacre built up with brick-and-mortar architecture, exhibiting extraordinary strength and toughness, provides an inspiration to construct high-performance multifunctional film for flexible energy storage and portable electrical devices. In the...

scholarly journals Semi-metallic, strong and stretchable wet-spun conjugated polymer microfibers

2015 ◽  
Vol 3 (11) ◽  
pp. 2528-2538 ◽  
Author(s):  
Jian Zhou ◽  
Er Qiang Li ◽  
Ruipeng Li ◽  
Xuezhu Xu ◽  
Isaac Aguilar Ventura ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Conjugated Polymer ◽  
High Performance ◽  
Wet Spinning ◽  
Hot Drawing ◽  
Polymer Microfibers

High-performance conjugated polymer microfibers were fabricated via wet-spinning followed by hot-drawing. With a combination of solvent doping and de-doping, we achieved a record electrical conductivity of 2804 S cm−1.

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