scholarly journals Graphene/Reduced Graphene Oxide-Carbon Nanotubes Composite Electrodes: From Capacitive to Battery-Type Behaviour

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1240
Author(s):  
Olena Okhay ◽  
Alexander Tkach
Keyword(s):  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Electrode Materials ◽  
Electrical Energy ◽  
Portable Devices ◽  
Composite Electrodes ◽  
Mechanical Pressure ◽  
Reduced Graphene ◽  
Wide Range

Thanks to the advanced technologies for energy generation such as solar cells and thermo- or piezo-generators the amount of electricity transformed from light, heat or mechanical pressure sources can be significantly enhanced. However, there is still a demand for effective storage devices to conserve electrical energy which addresses the wide range of large stationary applications from electric vehicles to small portable devices. Among the large variety of energy-storage systems available today, electrochemical energy sources and, in particular, supercapacitors (SC), are rather promising in terms of cost, scaling, power management, life cycle and safety. Therefore, this review surveys recent achievements in the development of SC based on composites of such carbon-derived materials as graphene (G) and reduced graphene oxide (rGO) with carbon nanotubes (CNT). Various factors influencing the specific capacitance are discussed, while specific energy and power as well as cycling stability of SC with G/rGO-CNT composite electrode materials are overviewed.

Si-mediated fabrication of reduced graphene oxide and its hybrids for electrode materials

2015 ◽  
Vol 17 (2) ◽  
pp. 776-780 ◽  
Author(s):  
Barun Kumar Barman ◽  
Karuna Kar Nanda
Keyword(s):  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Electrode Materials ◽  
Multiwall Carbon Nanotubes ◽  
Environmentally Friendly ◽  
Si Substrate ◽  
Reduced Graphene ◽  
Multiwall Carbon

We demonstrate a Si-mediated environmentally friendly reduction of graphene oxide (GO) and the fabrication of hybrid electrode materials with multiwall carbon nanotubes and nanofibers. The reduction of GO is facilitated by the nascent hydrogen generated by the reaction between Si and KOH. The overall process consumes 10 to 15 μm of Si each time and the same Si substrate can be used multiple times.

α-NiS grown on reduced graphene oxide and single-wall carbon nanotubes as electrode materials for high-power supercapacitors

RSC Advances ◽  
2015 ◽  
Vol 5 (35) ◽  
pp. 27940-27945 ◽  
Author(s):  
Ji Yan ◽  
Gregory Lui ◽  
Ricky Tjandra ◽  
Xiaolei Wang ◽  
Lathankan Rasenthiram ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Specific Capacitance ◽  
Reduced Graphene Oxide ◽  
High Power ◽  
Electrode Materials ◽  
High Specific Capacitance ◽  
Single Wall Carbon Nanotubes ◽  
Rate Performance ◽  
Reduced Graphene

α-NiS combined with SWNTs and graphene exhibits high specific capacitance, and excellent rate performance and cycling stability.

Carbon nanotubes/reduced graphene oxide composites as electrode materials for supercapacitors

2021 ◽  
Vol 128 (1) ◽  
Author(s):  
Songyan Wang ◽  
Kaiwen Cao ◽  
Lianghua Xu ◽  
Donglin Zhao ◽  
Yuanjian Tong
Keyword(s):  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Electrode Materials ◽  
Reduced Graphene ◽  
Oxide Composites

Supercapacitors with high capacitance based on reduced graphene oxide/carbon nanotubes/NiO composite electrodes

2014 ◽  
Vol 2 (11) ◽  
pp. 3834-3840 ◽  
Author(s):  
Yang Bai ◽  
Meng Du ◽  
Jie Chang ◽  
Jing Sun ◽  
Lian Gao
Keyword(s):  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Hybrid Material ◽  
High Capacity ◽  
Cycling Performance ◽  
Composite Electrodes ◽  
High Capacitance ◽  
Reduced Graphene

An RGO/CNT/NiO hybrid material shows extremely high capacity and cycling performance due to the less aggregation of RGO/NiO caused by the addition of CNTs.

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