Ultralong and Millimeter-Thick Graphene Oxide Supercapacitors with High Volumetric Capacitance

2021 ◽  
Author(s):  
Chang Su Yeo ◽  
Young-Jung Heo ◽  
Min Kyoon Shin ◽  
Jong-Hoon Lee ◽  
Yong Yeol Park ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Volumetric Capacitance

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.

A supercapacitor with ultrahigh volumetric capacitance produced by self-assembly of reduced graphene oxide through phosphoric acid treatment

2020 ◽  
Vol 8 (36) ◽  
pp. 18933-18944 ◽  
Author(s):  
Zhaoyuan Liu ◽  
Lidong Wang ◽  
Guizhi Ma ◽  
Yinan Yuan ◽  
Henan Jia ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Graphene Oxide ◽  
Phosphoric Acid ◽  
Reduced Graphene Oxide ◽  
Self Assembly ◽  
Acid Treatment ◽  
Treatment Method ◽  
Reduced Graphene ◽  
Volumetric Capacitance ◽  
Heat Treatment Method

Self-assembled reduced graphene oxide was prepared by a phosphoric acid heat-treatment method and exhibited an ultra-high volumetric capacitance.

Bendable graphene/conducting polymer hybrid films for freestanding electrodes with high volumetric capacitances

RSC Advances ◽  
2016 ◽  
Vol 6 (4) ◽  
pp. 2951-2957 ◽  
Author(s):  
Lu Mao ◽  
Meng Li ◽  
Junmin Xue ◽  
John Wang
Keyword(s):  
Graphene Oxide ◽  
Conducting Polymers ◽  
Reduced Graphene Oxide ◽  
Conducting Polymer ◽  
Hybrid Films ◽  
Capacitive Performance ◽  
One Dimensional ◽  
Polymer Hybrid ◽  
Reduced Graphene ◽  
Volumetric Capacitance

Bendable freestanding films composed of reduced graphene oxide and one dimensional conducting polymers exhibit superior capacitive performance in terms of gravimetric capacitance and volumetric capacitance.

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.

Nanocellulose coupled flexible polypyrrole@graphene oxide composite paper electrodes with high volumetric capacitance

Nanoscale ◽  
2015 ◽  
Vol 7 (8) ◽  
pp. 3418-3423 ◽  
Author(s):  
Zhaohui Wang ◽  
Petter Tammela ◽  
Maria Strømme ◽  
Leif Nyholm
Keyword(s):  
Graphene Oxide ◽  
Oxide Composite ◽  
Flexible Polymer ◽  
Volumetric Capacitance ◽  
Composite Paper

A robust and flexible nanocellulose coupled PPy@GO paper electrode is straightforwardly prepared, exhibiting a capacitance of 198 F cm−3(301 F cm−3based on PPy) ever reported for flexible polymer-based electrodes.

Facile one-pot synthesis of water-dispersible phosphate functionalized reduced graphene oxide toward high-performance energy storage devices

2020 ◽  
Vol 56 (9) ◽  
pp. 1373-1376 ◽  
Author(s):  
Nicolas R. Tanguy ◽  
Jeanne N’Diaye ◽  
Mohammad Arjmand ◽  
Keryn Lian ◽  
Ning Yan
Keyword(s):  
Graphene Oxide ◽  
Energy Storage ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Energy Storage Devices ◽  
One Pot ◽  
Storage Devices ◽  
Water Dispersible ◽  
Reduced Graphene ◽  
Volumetric Capacitance

A facile and one-pot hydrothermal methodology for producing phosphate functionalized reduced graphene oxide with enhanced volumetric capacitance is reported.

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