scholarly journals One-step cathodic electrodeposition of a cobalt hydroxide–graphene nanocomposite and its use as a high performance supercapacitor electrode material

RSC Advances ◽  
2018 ◽  
Vol 8 (47) ◽  
pp. 26818-26827 ◽  
Author(s):  
Seyed Abbas Rahimi ◽  
Parviz Norouzi ◽  
Mohammad Reza Ganjali
Keyword(s):  
High Performance ◽  
Electrode System ◽  
Constant Current ◽  
Cobalt Hydroxide ◽  
Supercapacitor Electrode ◽  
Constant Current Density ◽  
Cathodic Electrodeposition ◽  
Reduced Graphene ◽  
One Step ◽  
Graphene Nanocomposite

In this study, Co(OH)2-reduced graphene oxide has been synthesized using a simple and rapid one-step cathodic electrodeposition method in a two electrode system at a constant current density on a stainless steel plate, and then characterized as a supercapacitive material on Ni foam.

Hydrothermally synthesized BiVO4–reduced graphene oxide nanocomposite as a high performance supercapacitor electrode with excellent cycle stability

2018 ◽  
Vol 42 (12) ◽  
pp. 10161-10166 ◽  
Author(s):  
Shibsankar Dutta ◽  
Shreyasi Pal ◽  
Sukanta De
Keyword(s):  
Graphene Oxide ◽  
Synergistic Effect ◽  
Electrochemical Performance ◽  
High Performance ◽  
Hydrothermal Process ◽  
Cycle Stability ◽  
Supercapacitor Electrode ◽  
Reduced Graphene ◽  
Symmetric Supercapacitor ◽  
One Step

A BiVO4/rGO hybrid-based symmetric supercapacitor has been fabricated via a simple one-step hydrothermal process, which shows a synergistic effect towards electrochemical performance with excellent cycle stability.

Growth of vertically aligned Co3S4/CoMo2S4 ultrathin nanosheets on reduced graphene oxide as a high-performance supercapacitor electrode

2016 ◽  
Vol 4 (48) ◽  
pp. 18857-18867 ◽  
Author(s):  
Xijia Yang ◽  
Haiming Sun ◽  
Ping Zan ◽  
Lijun Zhao ◽  
Jianshe Lian
Keyword(s):  
Graphene Oxide ◽  
Hydrothermal Method ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Supercapacitor Electrode ◽  
Ultrathin Nanosheets ◽  
Reduced Graphene ◽  
One Step ◽  
Vertically Aligned

Ultrathin Co3S4/CoMo2S4 nanosheets vertically aligned on rGO sheets are prepared through a facile one-step hydrothermal method for supercapacitors.

One-step Synthesis of O-self-doped Honeycomb-like Hierachically Porous Carbons for Supercapacitors

2021 ◽  
pp. 1-19
Author(s):  
Shiying Lin ◽  
Lanlan Mo ◽  
Feijun Wang
Keyword(s):  
Electrode Material ◽  
Porous Carbon ◽  
High Performance ◽  
Rate Capability ◽  
High Specific Capacitance ◽  
Electrode System ◽  
Porous Carbon Material ◽  
Hierarchical Porous ◽  
One Step ◽  
Porous Carbon Electrode

Abstract A facile and environmentally friendly approach to produce self-doped hierachically porous carbon as electrode material for high-performance supercapacitor was demonstrated. 3D honeycomb-like hierarchically porous carbon was successfully obtained by one-step carbonization and activation of sodium carboxymethyl cellulose (CMC) via K2CO3. With the optimized temperature of carbonization and activation, the porous carbon material achieved well-shaped hierarchically pores (micro-, meso and macropores) like a honeycomb, ultrahigh specific surface area (1666 m2·g-1), as well as highly O-self-doping (3.6 at.%), endowing an excellent electrochemical properties for the electrode in three-electrode system. The porous carbon electrode material delivered a high specific capacitance of 300.8 F·g-1 at 1 A·g-1, an eminent rate capability of 228.4 F·g-1 at the current density up to 20 A·g-1 and outstanding cycle stability of 94.3% retention after 10000 cycles. Therefore, the CMC derived hierarchical porous carbon activated by K2CO3 would have promising foreground in application of supercapacitors.

Polyaniline functionalized reduced graphene oxide/carbon nanotube ternary nanocomposite as a supercapacitor electrode

2020 ◽  
Vol 56 (28) ◽  
pp. 4003-4006 ◽  
Author(s):  
Chengchao Wang ◽  
Yue Yang ◽  
Ruijun Li ◽  
Datong Wu ◽  
Yong Qin ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Carbon Nanotube ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Supercapacitor Electrode ◽  
Ternary Nanocomposite ◽  
Reduced Graphene

Polyaniline is covalently functionalized onto the RGO surface in the presence of carbon nanotubes and used for high performance supercapacitors.

Sign in / Sign up

Export Citation Format

Share Document