Fabrication of Highly Flexible, Scalable, and High-Performance Supercapacitors Using Polyaniline/Reduced Graphene Oxide Film with Enhanced Electrical Conductivity and Crystallinity

2013 ◽  
Vol 24 (17) ◽  
pp. 2489-2499 ◽  
Author(s):  
Minkyu Kim ◽  
Choonghyeon Lee ◽  
Jyongsik Jang
Keyword(s):  
Electrical Conductivity ◽  
Graphene Oxide ◽  
Oxide Film ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Reduced Graphene

A flexible and strong reduced graphene oxide film for high-performance electromagnetic shielding

2021 ◽  
pp. 100954
Author(s):  
Yu Zhang ◽  
Xuetao Shi ◽  
Guangcheng Zhang ◽  
Qiang Gao ◽  
Fei Huang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxide Film ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Electromagnetic Shielding ◽  
Reduced Graphene

scholarly journals Electrical Measurements of Thermally Reduced Graphene Oxide Powders under Pressure

Nanomaterials ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1387 ◽  
Author(s):  
Hyunsoo Park ◽  
Soomook Lim ◽  
Dang Du Nguyen ◽  
Ji Won Suk
Keyword(s):  
Electrical Conductivity ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Applied Pressure ◽  
Thermal Reduction ◽  
Electrical Measurements ◽  
Oxide Powders ◽  
Bulk Electrical Conductivity ◽  
Reduced Graphene

Graphene powders obtained via the reduction of graphene oxide flakes have been widely used in various applications as they can be synthesized in large quantities with outstanding properties. The electrical conductivity of graphene powders is critical for their uses in fabricating high-performance devices or materials. Here, we investigated the bulk electrical conductivity of reduced graphene oxide (rGO) powders depending on the applied pressure and additional thermal annealing. The electrical conductivity of the rGO powders was correlated with the change in the carbon-to-oxygen ratio via additional thermal reduction. Furthermore, the effect of the morphology of the rGO powders was studied through electromechanical measurements. This study provides a reliable method for the electromechanical characterization of rGO powders and a better understanding of the electrical conductivity of graphene-based materials.

A novel high-performance self-powered UV-vis-NIR photodetector based on a CdS nanorod array/reduced graphene oxide film heterojunction and its piezo-phototronic regulation

2018 ◽  
Vol 6 (3) ◽  
pp. 630-636 ◽  
Author(s):  
Xiang-Xiang Yu ◽  
Hong Yin ◽  
Hai-Xia Li ◽  
Han Zhao ◽  
Chong Li ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxide Film ◽  
Reduced Graphene Oxide ◽  
Spin Coating ◽  
High Performance ◽  
Nanorod Array ◽  
Reduced Graphene ◽  
Self Powered

A high-performance self-powered piezo-phototronic effect enhanced broadband photodetector based on a CdS nanorod array/rGO film heterojunction was fabricated facilely by spin-coating.

Hollow prism NiCo2S4 linked with interconnected reduced graphene oxide as a high performance anode material for sodium and lithium ion batteries

2018 ◽  
Vol 42 (2) ◽  
pp. 1467-1476 ◽  
Author(s):  
Zhiwei Zhang ◽  
Zhaoqiang Li ◽  
Longwei Yin
Keyword(s):  
Electrical Conductivity ◽  
Graphene Oxide ◽  
Lithium Ion Batteries ◽  
Reduced Graphene Oxide ◽  
Anode Material ◽  
High Performance ◽  
Hollow Structure ◽  
Lithium Ion ◽  
Reduced Graphene

The incorporation of RGO protected the fragile hollow structure of NiCo2S4 during cycling and improved the electrical conductivity of the composite.

A high-performance current collector-free flexible in-plane micro-supercapacitor based on a highly conductive reduced graphene oxide film

2016 ◽  
Vol 4 (41) ◽  
pp. 16213-16218 ◽  
Author(s):  
Mingmao Wu ◽  
Yingru Li ◽  
Bowen Yao ◽  
Ji Chen ◽  
Chun Li ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxide Film ◽  
Specific Capacitance ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Current Collector ◽  
Cycling Stability ◽  
Electrochemical Activation ◽  
Reduced Graphene ◽  
Excellent Cycling Stability

A flexible in-plane micro-supercapacitor fabricated by laser carving a highly conductive reduced graphene oxide film and electrochemical activation exhibits high areal specific capacitance and excellent cycling stability.

The additive-free electrode based on the layered MnO 2 nanoflowers/reduced, graphene oxide film for high performance supercapacitor

2017 ◽  
Vol 43 (7) ◽  
pp. 5374-5381 ◽  
Author(s):  
Yanhua Ding ◽  
Na Zhang ◽  
Jianyong Zhang ◽  
Xiaorui Wang ◽  
Jianqun Jin ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxide Film ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Reduced Graphene

scholarly journals Graphene Oxide: A Smart (Starting) Material for Natural Methylxanthines Adsorption and Detection

Molecules ◽  
2019 ◽  
Vol 24 (23) ◽  
pp. 4247 ◽  
Author(s):  
Rita Petrucci ◽  
Isabella Chiarotto ◽  
Leonardo Mattiello ◽  
Daniele Passeri ◽  
Marco Rossi ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Graphene Oxide ◽  
Nucleic Acids ◽  
Reduced Graphene Oxide ◽  
Electrochemical Sensors ◽  
Enzymatic Digestion ◽  
Biologically Active ◽  
Polar Solvents ◽  
Dna And Rna ◽  
Reduced Graphene

Natural methylxanthines, caffeine, theophylline and theobromine, are widespread biologically active alkaloids in human nutrition, found mainly in beverages (coffee, tea, cocoa, energy drinks, etc.). Their detection is thus of extreme importance, and many studies are devoted to this topic. During the last decade, graphene oxide (GO) and reduced graphene oxide (RGO) gained popularity as constituents of sensors (chemical, electrochemical and biosensors) for methylxanthines. The main advantages of GO and RGO with respect to graphene are the easiness and cheapness of synthesis, the notable higher solubility in polar solvents (water, among others), and the higher reactivity towards these targets (mainly due to – interactions); one of the main disadvantages is the lower electrical conductivity, especially when using them in electrochemical sensors. Nonetheless, their use in sensors is becoming more and more common, with the obtainment of very good results in terms of selectivity and sensitivity (up to 5.4 × 10−10 mol L−1 and 1.8 × 10−9 mol L−1 for caffeine and theophylline, respectively). Moreover, the ability of GO to protect DNA and RNA from enzymatic digestion renders it one of the best candidates for biosensors based on these nucleic acids. This is an up-to-date review of the use of GO and RGO in sensors.

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