scholarly journals Free-standing composite hydrogel films for superior volumetric capacitance

2015 ◽  
Vol 3 (30) ◽  
pp. 15668-15674 ◽  
Author(s):  
Mahmoud Moussa ◽  
Zhiheng Zhao ◽  
Maher F. El-Kady ◽  
Huakun Liu ◽  
Andrew Michelmore ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
High Performance ◽  
Composite Hydrogel ◽  
Free Standing ◽  
Conducting Composite ◽  
Volumetric Capacitance ◽  
Graphene Oxide Sheets ◽  
Hydrogel Films

Flexible, free-standing, high-performance supercapacitor electrodes were created by the development of a conducting composite hydrogel where graphene oxide sheets werein situreduced by polyaniline.

scholarly journals Green Synthesis of Free Standing Cellulose/Graphene Oxide/Polyaniline Aerogel Electrode for High-Performance Flexible All-Solid-State Supercapacitors

Nanomaterials ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1546
Author(s):  
Yueqin Li ◽  
Zongbiao Xia ◽  
Qiang Gong ◽  
Xiaohui Liu ◽  
Yong Yang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Flexible Electronics ◽  
High Performance ◽  
In Situ Polymerization ◽  
Lithium Bromide ◽  
Three Dimensional ◽  
Weight Ratio ◽  
Free Standing ◽  
Symmetric Configuration

The cellulose/graphene oxide (GO) networks as the scaffold of free-standing aerogel electrodes are developed by using lithium bromide aqueous solution, as the solvent, to ensure the complete dissolution of cotton linter pulp and well dispersion/reduction of GO nanosheets. Polyaniline (PANI) nanoclusters are then coated onto cellulose/GO networks via in-situ polymerization of aniline monomers. By optimized weight ratio of GO and PANI, the ternary cellulose/GO3.5/PANI aerogel film exhibits well-defined three-dimensional porous structures and high conductivity of 1.15 S/cm, which contributes to its high areal specific capacitance of 1218 mF/cm2 at the current density of 1.0 mA/cm2. Utilizing this cellulose/GO3.5/PANI aerogel film as electrodes in a symmetric configuration supercapacitor can result in an outstanding energy density as high as 258.2 µWh/cm2 at a power density of 1201.4 µW/cm2. Moreover, the device can maintain nearly constant capacitance under different bending deformations, suggesting its promising applications in flexible electronics.

In situ synthesis of V 2 O 3 nanorods anchored on reduced graphene oxide as high‐performance lithium ion battery anode

2018 ◽  
Vol 3 (43) ◽  
pp. 12108-12112 ◽  
Author(s):  
Xiaoqing Liu ◽  
Dan Zhang ◽  
Guangshe Li ◽  
Chenglin Xue ◽  
Junfang Ding ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Lithium Ion Battery ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Lithium Ion ◽  
In Situ Synthesis ◽  
Reduced Graphene ◽  
Battery Anode

Diamine molecules double lock-link structured graphene oxide sheets for high-performance sodium ions storage

2021 ◽  
Vol 34 ◽  
pp. 45-52
Author(s):  
Yu-Shan Zhang ◽  
Bin-Mei Zhang ◽  
Yu-Xia Hu ◽  
Jun Li ◽  
Chun Lu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
High Performance ◽  
Sodium Ions ◽  
Graphene Oxide Sheets

Pseudocapacitance and excellent cyclability of 2,5-dimethoxy-1,4-benzoquinone on graphene

2016 ◽  
Vol 9 (8) ◽  
pp. 2586-2594 ◽  
Author(s):  
Muhammad Boota ◽  
Chi Chen ◽  
Matthieu Bécuwe ◽  
Ling Miao ◽  
Yury Gogotsi
Keyword(s):  
Graphene Oxide ◽  
Hydrothermal Method ◽  
Reduced Graphene Oxide ◽  
Three Dimensional ◽  
Covalent Functionalization ◽  
Redox Active ◽  
Reduced Graphene ◽  
One Step ◽  
Volumetric Capacitance ◽  
Graphene Oxide Sheets

Non-covalent functionalization of 2,5-dimethoxy-1,4-benzoquinone and hydroquinone on reduced graphene oxide sheets led to the formation of a redox-active three-dimensional gel architecture via a one-step hydrothermal method, where the former exhibited high gravimetric and volumetric capacitance and 99% capacitance retention after 25 000 cycles at 50 mV s−1.

scholarly journals Implementing an in-situ carbon network in Si/reduced graphene oxide for high performance lithium-ion battery anodes

Nano Energy ◽  
2016 ◽  
Vol 19 ◽  
pp. 187-197 ◽  
Author(s):  
Kun Feng ◽  
Wook Ahn ◽  
Gregory Lui ◽  
Hey Woong Park ◽  
Ali Ghorbani Kashkooli ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Lithium Ion Battery ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Lithium Ion ◽  
Reduced Graphene ◽  
Carbon Network
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