scholarly journals Highly dispersive Co3O4 nanoparticles incorporated into a cellulose nanofiber for a high-performance flexible supercapacitor

Nanoscale ◽  
2021 ◽  
Vol 13 (1) ◽  
pp. 355-370
Author(s):  
Iqra Rabani ◽  
Jeseung Yoo ◽  
Hyo-Sun Kim ◽  
Do Van Lam ◽  
Sajjad Hussain ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Specific Capacitance ◽  
Transition Metal Oxides ◽  
High Performance ◽  
Electrode Materials ◽  
Volume Ratio ◽  
High Specific Capacitance ◽  
Co3o4 Nanoparticles ◽  
Flexible Supercapacitor

Transition metal oxides used as electrode materials for flexible supercapacitors have attracted huge attention due to their high specific capacitance and surface-to-volume ratio, specifically for cobalt oxide (Co3O4) nanoparticles.

scholarly journals Recent Advance in Co3O4 and Co3O4-Containing Electrode Materials for High-Performance Supercapacitors

Molecules ◽  
2020 ◽  
Vol 25 (2) ◽  
pp. 269 ◽  
Author(s):  
Xuelei Wang ◽  
Anyu Hu ◽  
Chao Meng ◽  
Chun Wu ◽  
Shaobin Yang ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
High Performance ◽  
Electrode Materials ◽  
Sol Gel ◽  
High Specific Capacitance ◽  
Chemical Precipitation ◽  
Synthetic Methods ◽  
Energy Storage Devices

Among the popular electrochemical energy storage devices, supercapacitors (SCs) have attracted much attention due to their long cycle life, fast charge and discharge, safety, and reliability. Transition metal oxides are one of the most widely used electrode materials in SCs because of the high specific capacitance. Among various transition metal oxides, Co3O4 and related composites are widely reported in SCs electrodes. In this review, we introduce the synthetic methods of Co3O4, including the hydrothermal/solvothermal method, sol–gel method, thermal decomposition, chemical precipitation, electrodeposition, chemical bath deposition, and the template method. The recent progress of Co3O4-containing electrode materials is summarized in detail, involving Co3O4/carbon, Co3O4/conducting polymer, and Co3O4/metal compound composites. Finally, the current challenges and outlook of Co3O4 and Co3O4-containing composites are put forward.

scholarly journals Advances in the design and application of transition metal oxide-based supercapacitors

2021 ◽  
Vol 19 (1) ◽  
pp. 709-725
Author(s):  
Vanessa Quispe-Garrido ◽  
Gabriel Antonio Cerron-Calle ◽  
Antony Bazan-Aguilar ◽  
José G. Ruiz-Montoya ◽  
Elvis O. López ◽  
...  
Keyword(s):  
Energy Storage ◽  
Transition Metal ◽  
Metal Oxides ◽  
Specific Capacitance ◽  
Power Density ◽  
Transition Metal Oxides ◽  
High Specific Capacitance ◽  
Energy Storage Devices ◽  
Promising Alternative ◽  
Hybrid Supercapacitors

Abstract In the last years, supercapacitors (SCs) have been proposed as a promising alternative to cover the power density deficiency presented in batteries. Electrical double-layer SCs, pseudocapacitors, and hybrid supercapacitors (HSCs) have shown very attractive features such as high-power density, long cycle life, and tunable specific capacitance. The advances of these energy storage devices made by transition metal oxides (TMOs) and their production in pseudocapacitors and HSCs depend on chemical composition, crystalline structure, morphology, theoretical capacitance, and oxidation states. In this way, this critical review considers several metal oxides (RuO2, MnO2, V2O5, and Co3O4) and their different configurations with diverse carbon-based materials. Energy storage mechanisms and fundamental principles to understand the promising effect of metal oxides in SCs devices are thoroughly described. Special attention as regards to the energy storage mechanisms relative to the specific capacitance values is presented in the reviewed articles. This review envisages the TMO as a key component to obtain high specific capacitance SCs.

ZIF-67-derived NiCo2O4@Co2P/Ni2P honeycomb nanosheets on carbon cloth for high-performance asymmetric supercapacitors

2021 ◽  
Author(s):  
Wen-Wei Song ◽  
Bing Wang ◽  
Xiao-Man Cao ◽  
Qiang Chen ◽  
Zhengbo Han
Keyword(s):  
Transition Metal ◽  
Transition Metal Oxides ◽  
High Performance ◽  
Electrode Materials ◽  
Redox Activity ◽  
Electrochemical Performances ◽  
Carbon Cloth ◽  
Metal Phosphides ◽  
Metal Organic ◽  
Transition Metal Phosphides

Metal-organic frameworks (MOFs)-derived transition-metal oxides and transition-metal phosphides have great application potential as electrode materials for supercapacitors, owing to the excellent redox activity and high conductivity. However, their electrochemical performances...

Three dimensional iron oxide/graphene aerogel hybrids as all-solid-state flexible supercapacitor electrodes

RSC Advances ◽  
2016 ◽  
Vol 6 (64) ◽  
pp. 58994-59000 ◽  
Author(s):  
Abdul Muqsit Khattak ◽  
Huajie Yin ◽  
Zahid Ali Ghazi ◽  
Bin Liang ◽  
Azhar Iqbal ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Solid State ◽  
Specific Capacitance ◽  
Electrode Materials ◽  
Three Dimensional ◽  
High Specific Capacitance ◽  
Graphene Aerogel ◽  
Flexible Supercapacitor

Three dimensional iron oxide/graphene aerogel hybrid (Fe2O3/GA) was synthesized and used as electrode materials in flexible supercapacitor devices, which show high specific capacitance of 440 F g−1 with 89% capacitance retention after 2200 cycles.

Binary metal oxide: advanced energy storage materials in supercapacitors

2015 ◽  
Vol 3 (1) ◽  
pp. 43-59 ◽  
Author(s):  
Yufei Zhang ◽  
Laiquan Li ◽  
Haiquan Su ◽  
Wei Huang ◽  
Xiaochen Dong
Keyword(s):  
Energy Storage ◽  
Transition Metal ◽  
Metal Oxide ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Electrode Materials ◽  
Electronic Conductivity ◽  
Reversible Capacity ◽  
Energy Storage Materials ◽  
Binary Metal Oxide

Binary transition metal oxides (BTMOs) possess higher reversible capacity, better structural stability and electronic conductivity, and have been widely studied to be novel electrode materials for supercapacitors.

Hierarchical Dendritic Polypyrrole with High Specific Capacitance for High-performance Supercapacitor Electrode Materials

2017 ◽  
Vol 20 (4) ◽  
pp. 197-204
Author(s):  
Weiliang Chen ◽  
Shuhua Pang ◽  
Zheng Liu ◽  
Zhewei Yang ◽  
Xin Fan ◽  
...  
Keyword(s):  
Specific Capacitance ◽  
Current Density ◽  
High Performance ◽  
Electrode Materials ◽  
High Specific Capacitance ◽  
Chemical Oxidation ◽  
Channel Structure ◽  
Supercapacitor Electrode ◽  
Infrared Spectrometer ◽  
A Current

Polypyrrole with hierarchical dendritic structures assembled with cauliflower-like structure of nanospheres, was synthesized by chemical oxidation polymerization. The structure of polyryrrole was characterized by Fourier transform infrared spectrometer and scanning electron microscopy. The electrochemical performance was performed on CHI660 electrochemical workstation. The results show that oxalic acid has a significant effect on morphology of PPy products. The hierarchical dendritic PPyOA(3) electrodes possess a large specific capacitance as high as 744 F/g at a current density of 0.2 A/g and could achieve a higher specific capacitance of 362 F/g even at a current density of 5.0 A/g. Moreover, the dendritic PPy products produce a large surface area on the electrode through the formation of the channel structure with their assembled cauliflower-like morphology, which facilitates the charge/electron transfer relative to the spherical PPy electrode. The spherical dendritic PPyOA(3) electrode has 58% retention of initial specific capacitance after 260 cycles. The as-prepared dendritic polypyrrole with high performance is a promsing electrode material for supercapacitor.

scholarly journals A universal electrochemical lithiation–delithiation method to prepare low-crystalline metal oxides for high-performance hybrid supercapacitors

RSC Advances ◽  
2021 ◽  
Vol 11 (48) ◽  
pp. 30407-30414
Author(s):  
Zhuo-Dong Wu ◽  
De-Jian Chen ◽  
Long Li ◽  
Li-Na Wang
Keyword(s):  
Transition Metal ◽  
Electrochemical Performance ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
High Performance ◽  
Hybrid Supercapacitors ◽  
Electrochemical Lithiation ◽  
Low Crystalline ◽  
Crystalline Metal

The electrochemical performance of transition metal oxides (TMOs) for hybrid supercapacitors has been optimized through various methods in previous reports.

Fabrication of double-shell hollow NiO@N-C nanotubes for a high-performance supercapacitor

2019 ◽  
Vol 43 (34) ◽  
pp. 13457-13462 ◽  
Author(s):  
Lulu Zhang ◽  
Xiumei Song ◽  
Lichao Tan ◽  
Huiyuan Ma ◽  
Dongxuan Guo ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
High Performance ◽  
C Nanotubes ◽  
Carbon Based

Rational fabrication of carbon-based materials hybridized with transition-metal oxides is crucial for the design of supercapacitor electrodes with superior properties.

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