A high-performance electrochemical supercapacitor based on a polyaniline/reduced graphene oxide electrode and a copper(ii) ion active electrolyte

2018 ◽  
Vol 20 (1) ◽  
pp. 131-136 ◽  
Author(s):  
Yangxi Luo ◽  
Qin’e Zhang ◽  
Wenjing Hong ◽  
Zongyuan Xiao ◽  
Hua Bai
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Oxide Electrode ◽  
High Capacitance ◽  
Electrochemical Supercapacitor ◽  
Reduced Graphene ◽  
Oxide Anode

High capacitance is obtained by using Cu(ii) ions as a cathodic active electrolyte to work with a polyaniline/reduced graphene oxide anode.

Nitrogen-Enriched Reduced Graphene Oxide for High Performance Supercapacitor Electrode

2020 ◽  
Vol 20 (8) ◽  
pp. 4854-4859 ◽  
Author(s):  
Lei Chen ◽  
Xu Chen ◽  
Yaqiong Wen ◽  
Bixia Wang ◽  
Yangchen Wu ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Graphene Oxide ◽  
Specific Capacitance ◽  
Reduced Graphene Oxide ◽  
Electrode Material ◽  
High Performance ◽  
Electrode Materials ◽  
Electrochemical Impedance ◽  
Oxide Electrode ◽  
Reduced Graphene

Nitrogen-enriched reduced graphene oxide electrode material can be successfully prepared through a simple hydrothermal method. The morphology and microstructure of ready to use electrode material is measured by field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM) and X-ray diffraction (XRD). Physical characterizations revealed that nitrogen-enriched reduced graphene oxide electrode material possessed high specific surface area of 429.6 m2 · g−1, resulting in high utilization of electrode materials with electrolyte. Electrochemical performance of nitrogen-enriched reduced graphene oxide electrode was also investigated by cyclic voltammetry (CV), galvanostatic charge/discharge measurements and electrochemical impedance spectroscopy (EIS) in aqueous in 6 M KOH with a three-electrode system, which displayed a high specific capacitance about 223.5 F · g−1 at 1 mV · s−1. More importantly, nitrogenenriched reduced graphene oxide electrode exhibited outstanding stability with 100% coulombic efficiency and with no specific capacitance loss under 2 A · g−1 after 10000 cycles. The supercapacitive behaviors indicated that nitrogen-enriched reduced graphene oxide can be a used as a promising electrode for high-performance super-capacitors.

A high-performance three-dimensional Ni–Fe layered double hydroxide/graphene electrode for water oxidation

2015 ◽  
Vol 3 (13) ◽  
pp. 6921-6928 ◽  
Author(s):  
Xiaowen Yu ◽  
Miao Zhang ◽  
Wenjing Yuan ◽  
Gaoquan Shi
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Layered Double Hydroxide ◽  
Water Oxidation ◽  
High Performance ◽  
Three Dimensional ◽  
Oxide Electrode ◽  
Reduced Graphene ◽  
Electrochemically Reduced Graphene Oxide ◽  
Double Hydroxide

Ni–Fe layered double hydroxide nanoplates loaded on a three-dimensional electrochemically reduced graphene oxide electrode for efficient water oxidation, exhibiting higher activity, kinetics, and stability than those of the IrO2catalyst.

Electrodepositing a 3D porous rGO electrode for efficient hydrogel electrolyte integration towards 1.6 V flexible symmetric supercapacitors

2019 ◽  
Vol 55 (57) ◽  
pp. 8282-8285 ◽  
Author(s):  
Kaizheng Song ◽  
Yuqi Jiang ◽  
Xiang Pang ◽  
Yuanyuan Li ◽  
Jinping Liu
Keyword(s):  
Graphene Oxide ◽  
Solid State ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Hierarchical Architecture ◽  
Oxide Electrode ◽  
Reduced Graphene

A reduced graphene oxide electrode with a 3D hierarchical architecture achieves 3D penetration of hydrogel, giving rise to a high-performance quasi-solid-state supercapacitor.

A Multilayered Silicon-Reduced Graphene Oxide Electrode for High Performance Lithium-Ion Batteries

2015 ◽  
Vol 7 (15) ◽  
pp. 7855-7862 ◽  
Author(s):  
Xianfeng Gao ◽  
Jianyang Li ◽  
Yuanyuan Xie ◽  
Dongsheng Guan ◽  
Chris Yuan
Keyword(s):  
Graphene Oxide ◽  
Lithium Ion Batteries ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Lithium Ion ◽  
Oxide Electrode ◽  
Reduced Graphene

Reduced graphene oxide – Cu nanocomposite for the high performance electrochemical supercapacitor application

2020 ◽  
Author(s):  
Godlaveeti Sreenivasa Kumar ◽  
Hussen Maseed ◽  
Dadamiah PMD Shaik ◽  
Mahfooz Alam ◽  
S. Adinarayana Reddy ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Supercapacitor Application ◽  
Electrochemical Supercapacitor ◽  
Reduced Graphene

Reduced graphene oxide anchored Cu(OH)2as a high performance electrochemical supercapacitor

2015 ◽  
Vol 44 (33) ◽  
pp. 14604-14612 ◽  
Author(s):  
Atin Pramanik ◽  
Sandipan Maiti ◽  
Sourindra Mahanty
Keyword(s):  
Graphene Oxide ◽  
Energy Density ◽  
Reduced Graphene Oxide ◽  
Power Density ◽  
High Performance ◽  
Electrochemical Supercapacitor ◽  
Reduced Graphene ◽  
Symmetric Supercapacitor

A Cu(OH)2@RGO symmetric supercapacitor cell shows an excellent energy density and power density (84.5 Wh kg−1at 550 W kg−1).

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