scholarly journals Influence of the Hydrophilic Surface of Nanofiber Support on the Performance of Hybrid Supercapacitors

Energies ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 7621
Author(s):  
Hyo-Young Kim ◽  
Seon-Yeong Lee ◽  
In-Yup Jeon ◽  
Jeeyoung Shin ◽  
Young-Wan Ju
Keyword(s):  
Surface Properties ◽  
High Performance ◽  
Fossil Fuels ◽  
Electrode Materials ◽  
Carbon Nanofiber ◽  
Co3o4 Nanoparticles ◽  
Hydrophilic Surface ◽  
Hybrid Supercapacitors ◽  
Load Response ◽  
Doped Graphene

Concerns associated with global warming and the depleting reserves of fossil fuels have highlighted the importance of high−performance energy storage systems (ESSs) for efficient energy usage. ESSs such as supercapacitors can contribute to improved power quality of an energy generation system, which is characterized by a slow load response. Composite materials are primarily used as supercapacitor electrodes because they can compensate for the disadvantages of carbon or metal oxide electrode materials. In this study, a composite of oxide nanoparticles loaded on a carbon nanofiber support was used as an electrode material for a hybrid supercapacitor. The addition of a small amount of hydrophilic FeN@GnP (Fe− and N−doped graphene nanoplates) modified the surface properties of carbon nanofibers prepared by electrospinning. Accordingly, the effects of the hydrophobic/hydrophilic surface properties of the nanofiber support on the morphology of Co3O4 nanoparticles loaded on the nanofiber, as well as the performance of the supercapacitor, were systematically investigated.

scholarly journals Influence of the Hydrophilic Surface of Nanofiber Support on the Performance of Hybrid Supercapacitors

2021 ◽  
Author(s):  
Hyo-Young Kim ◽  
Seon-Yeong Lee ◽  
In-Yup Jeon ◽  
Jeeyoung Shin ◽  
Young-Wan Ju
Keyword(s):  
Surface Properties ◽  
High Performance ◽  
Fossil Fuels ◽  
Electrode Materials ◽  
Carbon Nanofiber ◽  
Co3o4 Nanoparticles ◽  
Hydrophilic Surface ◽  
Hybrid Supercapacitors ◽  
Load Response ◽  
Doped Graphene

Concerns associated with global warming and the depleting reserves of fossil fuels have highlighted the importance of high-performance energy storage systems (ESSs) for efficient energy usage. ESSs such as supercapacitors can contribute to improved power quality of an energy generation system, which is characterized by a slow load response. Composite materials are primarily used as supercapacitor electrodes because they can compensate for the disadvantages of carbon or metal oxide electrode materials. In this study, a composite of oxide nanoparticles loaded on a carbon nanofiber support was used as an electrode material for a hybrid supercapacitor. The addition of a small amount of hydrophobic Fe- and N-doped graphene nanoplates modified the surface properties of carbon nanofibers prepared by electrospinning. Accordingly, the effects of the hydrophobic/hydrophilic surface properties of the nanofiber support on the morphology of Co3O4 nanoparticles loaded on the nanofiber, as well as the performance of the supercapacitor, were systematically investigated.

Vacancies-engineered MoO3 and Na+-preinserted MnO2 in-situ grown N-doped graphene nanotubes as electrode materials for high-performance asymmetric supercapacitor

2021 ◽  
Author(s):  
Jian Zhao ◽  
He Cheng ◽  
Huanyu Li ◽  
Yan-Jie Wang ◽  
Qingyan Jiang ◽  
...  
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
High Energy ◽  
Cooperative Effect ◽  
Electrochemical Energy Storage ◽  
Asymmetric Supercapacitor ◽  
Asymmetric Supercapacitors ◽  
Doped Graphene ◽  
Power Densities

Developing advanced negative and positive electrode materials for asymmetric supercapacitors (ASCs) as the electrochemical energy storage can enable the device to reach high energy/power densities resulting from the cooperative effect...

Generation of three dimensional pore-controlled nitrogen-doped graphene hydrogels for high-performance supercapacitors by employing formamide as the modulator

2017 ◽  
Vol 5 (4) ◽  
pp. 1442-1445 ◽  
Author(s):  
Yao Wang ◽  
Zidong Wei ◽  
Yao Nie ◽  
Yun Zhang
Keyword(s):  
Pore Structure ◽  
Surface Properties ◽  
High Performance ◽  
Three Dimensional ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
Supercapacitor Performance

An excellent supercapacitor performance of nitrogen-doped graphene hydrogels was achieved by inventively employing formamide as a modulator of their pore structure and surface properties.

Engineering coordination polymer-derived one-dimensional porous S-doped Co3O4 nanorods with rich oxygen vacancies as high-performance electrode materials for hybrid supercapacitors

2020 ◽  
Vol 49 (30) ◽  
pp. 10421-10430 ◽  
Author(s):  
Youjing Li ◽  
Weiwei Li ◽  
Cui Yang ◽  
Kai Tao ◽  
Qingxiang Ma ◽  
...  
Keyword(s):  
Energy Storage ◽  
Coordination Polymer ◽  
High Performance ◽  
Oxygen Vacancies ◽  
Electrode Materials ◽  
One Dimensional ◽  
Hybrid Supercapacitors ◽  
Co3o4 Nanorods

1D porous S-doped Co3O4 nanorods with rich oxygen vacancies and enhanced energy storage capability were engineered by a coordination polymer-engaged strategy.

scholarly journals Designed construction of hierarchical NiCo2S4@polypyrrole core–shell nanosheet arrays as electrode materials for high-performance hybrid supercapacitors

RSC Advances ◽  
2017 ◽  
Vol 7 (30) ◽  
pp. 18447-18455 ◽  
Author(s):  
Shaojie Chen ◽  
Yefeng Yang ◽  
Ziyue Zhan ◽  
Jinlei Xie ◽  
Jie Xiong
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Core Shell ◽  
Hybrid Supercapacitors ◽  
Nanosheet Arrays

In this work, we report the design and fabrication of hierarchical NiCo2S4@polypyrrole (PPy) core–shell hybrid nanosheet arrays as a novel battery-type electrode for high-performance hybrid supercapacitors.

Mixed-metallic MOF based electrode materials for high performance hybrid supercapacitors

2017 ◽  
Vol 5 (3) ◽  
pp. 1094-1102 ◽  
Author(s):  
Yang Jiao ◽  
Jian Pei ◽  
Dahong Chen ◽  
Chunshuang Yan ◽  
Yongyuan Hu ◽  
...  
Keyword(s):  
Energy Storage ◽  
Electrode Material ◽  
High Performance ◽  
Electrode Materials ◽  
Metal Organic Frameworks ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Hybrid Supercapacitors ◽  
Metal Organic

Metal–organic frameworks (MOFs) have obtained increasing attention as a kind of novel electrode material for energy storage devices.

Co3O4 nanoparticles decorated carbon nanofiber mat as binder-free air-cathode for high performance rechargeable zinc-air batteries

Nanoscale ◽  
2015 ◽  
Vol 7 (5) ◽  
pp. 1830-1838 ◽  
Author(s):  
Bing Li ◽  
Xiaoming Ge ◽  
F. W. Thomas Goh ◽  
T. S. Andy Hor ◽  
Dongsheng Geng ◽  
...  
Keyword(s):  
Energy Density ◽  
Carbon Nanofibers ◽  
High Performance ◽  
Carbon Nanofiber ◽  
Rate Capability ◽  
Co3o4 Nanoparticles ◽  
Air Cathode ◽  
Free Air ◽  
Binder Free ◽  
Zinc Air Batteries

A facile method is developed for the fabrication of Co3O4 nanoparticles decorated carbon nanofibers, which enable significant improvement of rechargeable Zn-air batteries with respect to rate capability, cycling stability and energy density.

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