scholarly journals Important factors for effective use of carbon nanotube matrices in electrochemical capacitor hybrid electrodes without binding additives

RSC Advances ◽  
2015 ◽  
Vol 5 (21) ◽  
pp. 16101-16111 ◽  
Author(s):  
Ricardo Quintero ◽  
Dong Young Kim ◽  
Kei Hasegawa ◽  
Yuki Yamada ◽  
Atsuo Yamada ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Activated Carbon ◽  
Carbon Nanotube ◽  
Electrochemical Capacitor ◽  
Effective Use

Activated carbon (AC) provides surface while carbon nanotubes (CNTs) provide conductive matrix. Ethanol, removable from AC pores, is suitable as dispersant. Few-wall CNTs, dispersible in ethanol, is suitable as CNTs.

Cyclic Voltammetry Analysis of Carbon Based Electrochemical Capacitor in Aqueous Electrolytes

2015 ◽  
Vol 761 ◽  
pp. 452-456 ◽  
Author(s):  
Raja Noor Amalina Raja Seman ◽  
Rose Farahiyan Munawar ◽  
Jeeferie Abd Razak ◽  
Nor Najihah Zulkapli ◽  
Mohd Shahril Amin Bistamam ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Cyclic Voltammetry ◽  
Activated Carbon ◽  
Carbon Nanotube ◽  
Electrochemical Properties ◽  
Electrochemical Capacitor ◽  
Aqueous Electrolytes ◽  
Cyclic Voltammetry Analysis ◽  
Carbon Based

In this study, a mixture of activated carbon (AC) and graphene (G) was coated onto the stainless steel (SS) mesh to produce an electrode for the electrochemical capacitor (EC). Different materials, such as carbon nanotube (CNT) mixed with G, were also used in this experiment to compare the electrochemical properties of both electrodes. The electrochemical properties of the electrode were determined by using cyclic voltammetry (CV). The CV curves of the AC/G electrodes showed good capacitive behaviour, and the highest capacitance values obtained for AC/G and CNT/G electrodes in 1M H2SO4 at 1 mVs-1 were 13 Fg-1 and 4.34 Fg-1, respectively. Meanwhile, the highest capacitance values obtained in 6M KOH at 1 mVs-1 were 14 Fg-1 and 12.07 Fg-1 for AC/G and CNT/G electrodes, respectively.

scholarly journals Few-walled carbon nanotube-enhanced activated carbon supercapacitor performance in organic electrolyte at 4 V

RSC Advances ◽  
2019 ◽  
Vol 9 (33) ◽  
pp. 18863-18867
Author(s):  
Jie Li ◽  
Zhou Xu
Keyword(s):  
Carbon Nanotubes ◽  
Activated Carbon ◽  
Carbon Nanotube ◽  
Energy Density ◽  
Organic Electrolyte ◽  
Supercapacitor Performance ◽  
Walled Carbon Nanotubes ◽  
Carbon Based

The addition of 1 wt% few-walled carbon nanotubes increases the energy density of an activated carbon-based supercapacitor at 4 V.

scholarly journals Photocatalytic performance of carbon nanotubes/activated carbon composite carrier carrying cadmium sulfide

2022 ◽  
Vol 5 (1) ◽  
pp. 23
Author(s):  
Minghan Qu ◽  
Tong He ◽  
Tianyi Liu ◽  
Chensha Li
Keyword(s):  
Carbon Nanotubes ◽  
Activated Carbon ◽  
Carbon Nanotube ◽  
Photocatalytic Degradation ◽  
Cadmium Sulfide ◽  
Reaction Rate ◽  
Photocatalytic Performance ◽  
Carbon Composite ◽  
Degradation Reaction ◽  
Composite Carrier

The in-situ reaction process was used to prepare composite materials loaded with cadmium sulfide, which were respectively loaded by carbon nanotubes, activated carbon, and carbon nanotube/activated carbon composites for the study of photocatalytic degradation of methyl orange. The results show that when carbon nanotubes and activated carbon are used as carriers, the photocatalytic degradation reaction rate constants are 3.6 times and 8.8 times higher than those without a carrier. The photocatalytic performance of the carbon nanotube/activated carbon composite carrier with a mass ratio of 20: 80 to support cadmium sulfide is significantly higher than that of cadmium sulfide supported by carbon nanotubes and activated carbon respectively, and its photocatalytic degradation reaction rate constant is 30% – 40% higher than that under the condition of activated carbon alone as carrier. It shows that when the modified activated carbon is used as a photocatalyst carrier, carbon nanotubes have a significant effect in improving the efficiency of degrading organic matter.

Fabrication of Carbon Nanotube Triode Using Helicon Plasma Cvd with Electroplated Nico Catalyst

2003 ◽  
Vol 772 ◽  
Author(s):  
Masakazu Muroyama ◽  
Kazuto Kimura ◽  
Takao Yagi ◽  
Ichiro Saito
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Metal Catalyst ◽  
Ni Catalyst ◽  
Plasma Cvd ◽  
Helicon Plasma ◽  
Plasma Enhanced Cvd ◽  
Turn On ◽  
Aligned Carbon Nanotubes ◽  
Vertically Aligned

AbstractA carbon nanotube triode using Helicon Plasma-enhanced CVD with electroplated NiCo catalyst has been successfully fabricated. Isolated NiCo based metal catalyst was deposited at the bottom of the cathode wells by electroplating methods to control the density of carbon nanotubes and also reduce the activation energy of its growth. Helicon Plasma-enhanced CVD (HPECVD) has been used to deposit nanotubes at 400°C. Vertically aligned carbon nanotubes were then grown selectively on the electroplated Ni catalyst. Field emission measurements were performed with a triode structure. At a cathode to anode gap of 1.1mm, the turn on voltage for the gate was 170V.

scholarly journals Explosive Molecule Sensing at Lattice Defect Sites in Metallic Carbon Nanotubes

2021 ◽  
Author(s):  
Manasi Doshi ◽  
Eric Paul Fahrenthold
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Experimental Research ◽  
Gas Sensing ◽  
Lattice Defect ◽  
Sensing Mechanism ◽  
Defect Sites ◽  
Chemiresistive Sensing ◽  
Hazardous Gas

Explosives and hazardous gas sensing using carbon nanotube (CNT) based sensors has been a focus of considerable experimental research. The simplest sensors have employed a chemiresistive sensing mechanism, and rely...

Cure Behavior Changes and Compression of Carbon Nanotubes in Aerospace Grade Bismaleimide-Carbon Nanotube Sheet Nanocomposites

2021 ◽  
Author(s):  
Mohammad Hamza Kirmani ◽  
Geeta Sachdeva ◽  
Ravindra Pandey ◽  
Gregory M. Odegard ◽  
Richard Liang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Behavior Changes ◽  
Cure Behavior
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