A study of Co‐Mn phosphate supported with graphene foam as promising electrode materials for future electrochemical capacitors

2021 ◽  
Author(s):  
Abdulmajid A. Mirghni ◽  
Kabir O. Oyedotun ◽  
Badr A. Mahmoud ◽  
Oladepo Fasakin ◽  
Delvina J. Tarimo ◽  
...  
Keyword(s):  
Electrode Materials ◽  
Electrochemical Capacitors ◽  
Graphene Foam

scholarly journals N-doped graphene foam obtained by microwave-assisted exfoliation of graphite

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Malgorzata Skorupska ◽  
Anna Ilnicka ◽  
Jerzy P. Lukaszewicz
Keyword(s):  
Electron Microscopy ◽  
Electrode Materials ◽  
Elemental Content ◽  
Research Approach ◽  
Pristine Graphene ◽  
Active Electrode ◽  
Graphene Foam ◽  
Practical Applications ◽  
Microwave Reactor ◽  
Doped Graphene

AbstractThe synthesis of metal-free but electrochemically active electrode materials, which could be an important contributor to environmental protection, is the key motivation for this research approach. The progress of graphene material science in recent decades has contributed to the further development of nanotechnology and material engineering. Due to the unique properties of graphene materials, they have found many practical applications: among others, as catalysts in metal-air batteries, supercapacitors, or fuel cells. In order to create an economical and efficient material for energy production and storage applications, researchers focused on the introduction of additional heteroatoms to the graphene structure. As solutions for functionalizing pristine graphene structures are very difficult to implement, this article presents a facile method of preparing nitrogen-doped graphene foam in a microwave reactor. The influence of solvent type and microwave reactor holding time was investigated. To characterize the elemental content and structural properties of the obtained N-doped graphene materials, methods such as elemental analysis, high-resolution transmission electron microscopy, scanning electron microscopy, and Raman spectroscopy were used. Electrochemical activity in ORR of the obtained materials was tested using cyclic voltamperometry (CV) and linear sweep voltamperometry (LSV). The tests proved the materials’ high activity towards ORR, with the number of electrons reaching 3.46 for tested non-Pt materials, while the analogous value for the C-Pt (20 wt% loading) reference was 4.

Biomass-derived interconnected carbon nanoring electrochemical capacitors with high performance in both strongly acidic and alkaline electrolytes

2017 ◽  
Vol 5 (1) ◽  
pp. 181-188 ◽  
Author(s):  
Xianjun Wei ◽  
Yongbin Li ◽  
Shuyan Gao
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Electrochemical Capacitors ◽  
High Rate ◽  
Alkaline Electrolytes

The match between sustainable electrode materials and electrolytes is the key to achieve high-rate electrochemical capacitors.

Graphene sheets anchored with ZnO nanocrystals as electrode materials for electrochemical capacitors

2014 ◽  
Vol 143 (2) ◽  
pp. 853-859 ◽  
Author(s):  
Chien-Te Hsieh ◽  
Jiun-Sheng Lin ◽  
Yu-Fu Chen ◽  
Chi-Yuan Lin ◽  
Wen-Yen Li
Keyword(s):  
Electrode Materials ◽  
Electrochemical Capacitors ◽  
Graphene Sheets ◽  
Zno Nanocrystals

Novel activated carbons as electrode materials for electrochemical capacitors from a series of starch

2008 ◽  
Vol 179 (7-8) ◽  
pp. 269-273 ◽  
Author(s):  
Q LI ◽  
H WANG ◽  
Q DAI ◽  
J YANG ◽  
Y ZHONG
Keyword(s):  
Electrode Materials ◽  
Activated Carbons ◽  
Electrochemical Capacitors

Hierarchical Cu0.27Co2.73O4/MnO2 nanorod arrays grown on 3D nickel foam as promising electrode materials for electrochemical capacitors

2015 ◽  
Vol 3 (33) ◽  
pp. 17359-17368 ◽  
Author(s):  
Hongwei Ge ◽  
Chengxiang Wang ◽  
Longwei Yin
Keyword(s):  
Heat Treatment ◽  
Electrode Materials ◽  
Nickel Foam ◽  
Electrochemical Capacitors ◽  
Treatment Method ◽  
Nanorod Arrays ◽  
Post Heat Treatment ◽  
Hierarchical Nanostructure ◽  
Nanostructure Arrays ◽  
Heat Treatment Method

Cu0.27Co2.73O4/MnO2 hybrid hierarchical nanostructure arrays directly on pressed nickel foam, with thin MnO2 nanoflakes homogeneously wrapped on Cu0.27Co2.73O4 nanorod arrays, are successfully synthesized by a simple hydrothermal and post heat-treatment method.

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