Multilayered electrode materials based on polyaniline/activated carbon composites for supercapacitor applications

2018 ◽  
Vol 43 (8) ◽  
pp. 4067-4080 ◽  
Author(s):  
Sowmya ◽  
M. Selvakumar
Keyword(s):  
Activated Carbon ◽  
Electrode Materials ◽  
Carbon Composites ◽  
Supercapacitor Applications

Facile Preparation of Commercial Bi2O3 Nanoparticle Decorated Activated Carbon for Pseudocapacitive Supercapacitor Applications

2021 ◽  
Author(s):  
Osman Üner ◽  
Naim Aslan ◽  
Akın Sarıoğlu ◽  
Fatih Semerci ◽  
Mumin Mehmet Koc
Keyword(s):  
Activated Carbon ◽  
Specific Capacitance ◽  
Bismuth Oxide ◽  
Weight Ratio ◽  
Carbon Composites ◽  
Active Carbons ◽  
Facile Preparation ◽  
Supercapacitor Applications ◽  
A Current ◽  
Maximum Specific Capacitance

Abstract In this work, a facile method to prepare commercial nano-Bi2O3/carbon composites with high pseudocapacitive properties was presented. The inorganic-organic composites synthesized by using commercial bismuth oxide and active carbon with different weight ratio. The composites were characterized using microscopic, spectroscopic, and diffractive methods. Our assessments confirmed that active carbons were successfully doped with commercial Bi2O3 nanoparticles with different dopant rates. The composites exhibited a maximum specific capacitance of 517 F/g at a current density of 1 A/g for 20% Bi2O3 nanoparticle doped activated carbon samples. Augmented discharging time was also achieved for increased Bi2O3 nanoparticle doping rate. Increased Bi2O3 dopant rate also increased the calculated specific capacitance.

scholarly journals Cobs Porous Carbon-Based Materials With High Energy And Excellent Cycle Stability For Supercapacitor Applications

2021 ◽  
Author(s):  
Moses Kigozi ◽  
Richard K Koech ◽  
Kingsley Orisekeh ◽  
Ravi Kali ◽  
Omar L M Kamoga ◽  
...  
Keyword(s):  
Activated Carbon ◽  
High Temperature ◽  
Functional Groups ◽  
Porous Carbon ◽  
Electrode Materials ◽  
High Energy ◽  
High Temperature Stability ◽  
Supercapacitor Applications ◽  
Maize Cobs ◽  
Carbon Based

Abstract Background and purpose: For application in supercapacitors, improving the efficiency of the electrode materials is the most important for obtaining high performance. Porous carbon with suitable architectures is reliable for improved electrochemical capacitors. In this study, we optimized the maize cobs as a potential abundant precursor for the production of porous carbon supercapacitor applications. This research study aimed to advance on the activation method for Activation of the biomass and to up-cycling agricultural biomass into carbon-based porous materials for supercapacitor electrode application. The carbonized samples were kept in a desiccator for 3 hours to allow intercalation and interaction of the carbon lattice expansion by K+ ion before Activation [Topic, RQ]. Results: The physical and chemical characterization of the synthesized materials was carried out several techniques for determining different properties of the activated carbon from maize cobs, including; structural-functional groups, morphology, chemical composition, physical properties and electrochemical performance. The results revealed surface structure with oxygen-based functional groups carried by XPS and FTIR, the amorphous nature by XRD, high-temperature stability to degradation by TGA/DSC, among others. Also, the structural characterization revealed a BET specific surface area of 1443.94 m2/g with a pore volume of 0.7915cm3/g. Symmetric devices based on the produced materials delivered a specific capacitance of 358.7F/g with an energy density of 12.45 Wh/kg and a corresponding power density of 250 W/kg at 0.5A/g [Outcome]. Conclusions: The as-prepared electrodes exhibited excellent stability with the capacitance retention of 99% at the maximum potential for a repeated 10hr to a total of 130 h. The industries can commercialise these activated carbon materials for application in energy storage systems and water purification due to their porosity and high-temperature resistance to degradation [Contributions].

V2O3 nanofoam@activated carbon composites as electrode materials of supercapacitors

2017 ◽  
Vol 10 (06) ◽  
pp. 1750077 ◽  
Author(s):  
Xun Zhang ◽  
Zhonglin Bu ◽  
Rui Xu ◽  
Bing Xie ◽  
Hong-Yi Li
Keyword(s):  
Activated Carbon ◽  
Specific Capacitance ◽  
High Performance ◽  
Electrode Materials ◽  
Low Cost ◽  
Rate Capability ◽  
Mesoporous Structure ◽  
Carbon Composites ◽  
Supercapacitor Application ◽  
Ion Intercalation

Electrode materials with high performance and low cost are demanding in supercapacitor applications. Novel V2O3 nanofoam@activated carbon composites have been prepared simply and cost-efficiently. Due to the mesoporous structure and high specific surface of V2O3 nanofoam and the good electric conductivity of activated carbon, the obtained composites exhibit an obviously improved specific capacitance as high as 185[Formula: see text]F/g, which overpasses bulk V2O3 (119[Formula: see text]F/g) and activated carbon (113[Formula: see text]F/g). The rate capability of V2O3 nanofoam@activated carbon composites has also been improved, owing to the increased electron transport accelerated by the activated carbon and the fast electrolyte ion intercalation/deintercalation facilitated by mesopores of V2O3 nanofoam. The composites retain 56% of initial specific capacitance when the current density increases from 0.05[Formula: see text]A/g to 1.0[Formula: see text]A/g. Therefore, the obtained V2O3 nanofoam@activated carbon composites are low-cost electrode materials with obviously improved electrochemical performance, which are idea for supercapacitor application.

Efficient Removal of Pb(II) and Co(II) Ions from Aqueous Solution with a Chromium-Based Metal–Organic Framework/Activated Carbon Composites

2021 ◽  
Vol 60 (11) ◽  
pp. 4332-4341
Author(s):  
Hossein Shahriyari Far ◽  
Mahdi Hasanzadeh ◽  
Mina Najafi ◽  
Targol Rahimi Masale Nezhad ◽  
Mahboubeh Rabbani
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Metal Organic Framework ◽  
Carbon Composites ◽  
Efficient Removal ◽  
Metal Organic ◽  
Organic Framework

N-Doped ordered mesoporous carbon grafted onto activated carbon fibre composites with enhanced activity for the electro-Fenton degradation of Brilliant Red X3B dye

RSC Advances ◽  
2014 ◽  
Vol 4 (104) ◽  
pp. 60168-60175 ◽  
Author(s):  
Qiaoli Peng ◽  
Zehui Zhang ◽  
Ze'ai Huang ◽  
Wei Ren ◽  
Jie Sun
Keyword(s):  
Activated Carbon ◽  
Mesoporous Carbon ◽  
Ordered Mesoporous Carbon ◽  
Carbon Composites ◽  
Carbon Fibres ◽  
Ordered Mesoporous ◽  
Fibre Composites ◽  
Activated Carbon Fibres ◽  
Carbon Fibre Composites ◽  
Activated Carbon Fibre

N-Doped ordered mesoporous carbon (N-OMC) was successfully prepared using dicyandiamide (C2H4N4) as the nitrogen source and was grafted onto activated carbon fibres (ACFs) to form carbon composites (ACF@N-OMC).

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