scholarly journals Patching laser-reduced graphene oxide with carbon nanodots

Nanoscale ◽  
2019 ◽  
Vol 11 (26) ◽  
pp. 12712-12719 ◽  
Author(s):  
Volker Strauss ◽  
Mit Muni ◽  
Arie Borenstein ◽  
Bolortuya Badamdorj ◽  
Tobias Heil ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Double Layer ◽  
Electric Double Layer ◽  
Carbon Nanodots ◽  
Electric Double Layer Capacitor ◽  
3D Graphene ◽  
Precursor Material ◽  
Double Layer Capacitor ◽  
Reduced Graphene

The performance of electric double layer capacitor (EDLC) electrodes based on 3D-graphene obtained by laser-assisted reduction of graphene oxide (GO) is improved by addition of carbon nanodots (CND) to the GO precursor material.

scholarly journals MoS2/Reduced Graphene Oxide-Based 2D Nancomposites for Boosting the Energy Density of Electric Double-Layer Capacitor

MRS Advances ◽  
2016 ◽  
Vol 1 (22) ◽  
pp. 1619-1624 ◽  
Author(s):  
Anishkumar Manoharan ◽  
Z. Ryan Tian ◽  
Simon S. Ang
Keyword(s):  
Graphene Oxide ◽  
Energy Density ◽  
Reduced Graphene Oxide ◽  
Double Layer ◽  
Electric Double Layer ◽  
Discharge Rate ◽  
Electric Double Layer Capacitor ◽  
Double Layer Capacitor ◽  
Reduced Graphene ◽  
Maximum Current

ABSTRACTA method for synthesizing and structuring 2D-MoS2/rGO (molybdenum disulfide/reduced graphene oxide) nanocomposite-based electric double layer capacitor (EDLC) that has a slower discharge rate and higher energy density than rGO-based EDLC (RG-EDLC) is reported. The rGO electrode and the nanocomposite were characterized using powder XRD and SEM for their physical and structural properties. Cyclic voltammetry (CV) was used to analyze the electrochemical behavior of the EDLCs. A maximum current density at which the MoS2/rGO nanocomposite-based EDLC (MRG-EDLC) can charge and discharge was 2.5 A/g, while it was 1A/g for the RG-EDLC. The specific capacitance of the MRG-EDLC was 14.52 F/g at 0.5 A/g with an energy density of 8.06 Wh/kg.

The synergistic effect of nitrogen doping and para-phenylenediamine functionalization on the physicochemical properties of reduced graphene oxide for electric double layer supercapacitors in organic electrolytes

2017 ◽  
Vol 5 (24) ◽  
pp. 12426-12434 ◽  
Author(s):  
Junghoon Yang ◽  
Jeongyim Shin ◽  
Mihui Park ◽  
Gi-Hyeok Lee ◽  
Mawuse Amedzo-Adore ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Synergistic Effect ◽  
Physicochemical Properties ◽  
Reduced Graphene Oxide ◽  
Double Layer ◽  
Electric Double Layer ◽  
Nitrogen Doping ◽  
Organic Electrolytes ◽  
Reduced Graphene ◽  
N Doping

This work studied the synergistic effect of N-doping and p-PDA functionalization on the properties of RGO for supercapacitors.

scholarly journals Synthesis of Reduced Graphene Oxide/Titanium Dioxide Nanotubes (rGO/TNT) Composites as an Electrical Double Layer Capacitor

Nanomaterials ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 934 ◽  
Author(s):  
John Lazarte ◽  
Regine Dipasupil ◽  
Gweneth Pasco ◽  
Ramon Eusebio ◽  
Aileen Orbecido ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Graphene Oxide ◽  
Specific Capacitance ◽  
Reduced Graphene Oxide ◽  
Double Layer ◽  
Cyclic Voltammogram ◽  
Titanium Dioxide Nanotubes ◽  
Combination Methods ◽  
Double Layer Capacitor ◽  
Reduced Graphene

Composites of synthesized reduced graphene oxide (rGO) and titanium dioxide nanotubes (TNTs) were examined and combined at different mass proportions (3:1, 1:1, and 1:3) to develop an electrochemical double layer capacitor (EDLC) nanocomposite. Three different combination methods of synthesis—(1) TNT introduction during GO reduction, (2) rGO introduction during TNT formation, and (3) TNT introduction in rGO sheets using a microwave reactor—were used to produce nanocomposites. Among the three methods, method 3 yielded an EDLC nanomaterial with a highly rectangular cyclic voltammogram and steep electrochemical impedance spectroscopy plot. The specific capacitance for method 3 nanocomposites ranged from 47.26–165.22 F/g while that for methods 1 and 2 nanocomposites only ranged from 14.03–73.62 F/g and 41.93–84.36 F/g, respectively. Furthermore, in all combinations used, the 3:1 graphene/titanium dioxide-based samples consistently yielded the highest specific capacitance. The highest among these nanocomposites is 3:1 rGO/TNT. Characterization of this highly capacitive 3:1 rGO/TNT EDLC composite revealed the dominant presence of partially amorphous rGO as seen in its XRD and SEM with branching crystalline anatase TNTs as seen in its XRD and TEM. Such property showed great potential that is desirable for applications to capacitive deionization and energy storage.

scholarly journals High-Surface-Area Nitrogen-Doped Reduced Graphene Oxide for Electric Double-Layer Capacitors

ChemSusChem ◽  
2015 ◽  
Vol 8 (11) ◽  
pp. 1875-1884 ◽  
Author(s):  
Hee-Chang Youn ◽  
Seong-Min Bak ◽  
Myeong-Seong Kim ◽  
Cherno Jaye ◽  
Daniel A. Fischer ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Surface Area ◽  
Double Layer ◽  
Electric Double Layer ◽  
High Surface ◽  
High Surface Area ◽  
Nitrogen Doped ◽  
Reduced Graphene ◽  
Double Layer Capacitors

Inside Cover: High-Surface-Area Nitrogen-Doped Reduced Graphene Oxide for Electric Double-Layer Capacitors (ChemSusChem 11/2015)

ChemSusChem ◽  
2015 ◽  
Vol 8 (11) ◽  
pp. 1822-1822
Author(s):  
Hee-Chang Youn ◽  
Seong-Min Bak ◽  
Myeong-Seong Kim ◽  
Cherno Jaye ◽  
Daniel A. Fischer ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Surface Area ◽  
Double Layer ◽  
Electric Double Layer ◽  
High Surface ◽  
High Surface Area ◽  
Nitrogen Doped ◽  
Reduced Graphene ◽  
Double Layer Capacitors

The Preparation of Electrical Double Layer Capacitor (EDLC) from Boron-doped Reduced-Graphene Oxide (B-rGO) Material

2019 ◽  
Vol 547 ◽  
pp. 012063 ◽  
Author(s):  
Diah Susanti ◽  
Yurian Ariandi Andrameda ◽  
Haniffudin Nurdiansah ◽  
Hariyati Purwaningsih ◽  
Yusuf Pradesar ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Double Layer ◽  
Electrical Double Layer ◽  
Boron Doped ◽  
Electrical Double Layer Capacitor ◽  
Double Layer Capacitor ◽  
Reduced Graphene

Evaporative assembly of graphene oxide for electric double-layer capacitor electrode application

2015 ◽  
Vol 270 ◽  
pp. 192-196 ◽  
Author(s):  
Hongwei Qiu ◽  
Thomas Bechtold ◽  
Linh Le ◽  
Woo Y. Lee
Keyword(s):  
Graphene Oxide ◽  
Double Layer ◽  
Electric Double Layer ◽  
Electric Double Layer Capacitor ◽  
Double Layer Capacitor

scholarly journals Solution-processed graphene oxide electrode for supercapacitors fabricated using low temperature thermal reduction

RSC Advances ◽  
2020 ◽  
Vol 10 (37) ◽  
pp. 22102-22111 ◽  
Author(s):  
Hye-Jun Kil ◽  
Kayoung Yun ◽  
Mak-Eum Yoo ◽  
Seungchul Kim ◽  
Jin-Woo Park
Keyword(s):  
Graphene Oxide ◽  
Low Temperature ◽  
Reduced Graphene Oxide ◽  
Double Layer ◽  
Electric Double Layer ◽  
Thermal Reduction ◽  
Fabrication Process ◽  
Oxide Electrode ◽  
Reduced Graphene ◽  
Double Layer Capacitors

We present a low temperature and solution-based fabrication process for reduced graphene oxide (rGO) electrodes for electric double layer capacitors (EDLCs).

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