Fabrication of amorphous carbon-coated NiO nanofibers for electrochemical capacitor applications

2014 ◽  
Vol 2 (10) ◽  
pp. 3364-3371 ◽  
Author(s):  
Dong Hoon Shin ◽  
Jun Seop Lee ◽  
Jaemoon Jun ◽  
Jyongsik Jang
Keyword(s):  
Nickel Oxide ◽  
Amorphous Carbon ◽  
Electrochemical Property ◽  
Vapor Deposition ◽  
Electrochemical Capacitor ◽  
Cycling Performance ◽  
Carbon Coated

Amorphous carbon-coated nickel oxide nanofibers (NiC NFs) were fabricated by vapor deposition polymerization and carbonization. The NiC NFs showed a higher electrochemical property and a longer cycling performance than pristine NiO NFs.

scholarly journals Three-Dimensional Porous Ti3C2Tx-NiO Composite Electrodes with Enhanced Electrochemical Performance for Supercapacitors

Materials ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 188 ◽  
Author(s):  
Kaicheng Zhang ◽  
Guobing Ying ◽  
Lu Liu ◽  
Fengchen Ma ◽  
Lin Su ◽  
...  
Keyword(s):  
Nickel Oxide ◽  
Freeze Drying ◽  
Three Dimensional ◽  
Electrochemical Capacitor ◽  
Cycling Performance ◽  
Composite Electrodes ◽  
Growth Trend ◽  
Porous Networks ◽  
Dimensional Network ◽  
Enhanced Electrochemical Performance

Ti3C2Tx and Ti3C2Tx-NiO composites with three-dimensional (3D) porous networks were successfully fabricated via vacuum freeze-drying. The microstructure, absorption, and electrochemical properties of the developed composites were investigated. Nickel oxide (NiO) nanoparticles could be evenly distributed on the three-dimensional network of three-dimensional Ti3C2Tx using solution processing. When employed as electrochemical capacitor electrodes in 1 M environmentally friendly sodium sulfate, Na2SO4, solution, the three-dimensional porous Ti3C2Tx-NiO composite electrodes exhibited considerable volume specific capacitance as compared to three-dimensional porous Ti3C2Tx. The three-dimensional porous Ti3C2Tx-NiO composite delivered a remarkable cycling performance with a capacitance retention of up to 114% over 2500 cycles. The growth trend of the capacitance with NiO content shows that nickel oxide plays a crucial role in the composite electrodes. These results present a roadmap for the development of convenient and economical supercapacitors in consideration with the possibilities of morphological control and the extensibility of the process.

Laser-assisted chemical vapor deposition of carbon coated cobalt nanoparticles

2005 ◽  
Vol 901 ◽  
Author(s):  
Oscar Alm ◽  
J.-O. Carlsson ◽  
M. Boman
Keyword(s):  
Chemical Vapor Deposition ◽  
Amorphous Carbon ◽  
Vapor Deposition ◽  
Photoelectron Spectroscopy ◽  
Chemical Vapor ◽  
Carbon Shell ◽  
Transmission Electron ◽  
Geometric Size ◽  
Carbon Coated ◽  
193 Nm

AbstractCarbon coated nanoparticles were synthesized by laser-assisted (ArF excimer laser, λ = 193 nm) chemical vapor deposition (LCVD). The particles were formed in the gas-phase by photolytic dissociation of cobaltocene in argon and the particles were deposited onto a silicon substrate. The particles were deposited at two different laser fluencies, 70 and 300 mJ/cm2.Single crystalline spherical cobalt particles with a well-defined carbon shell were observed by transmission electron microscopy (TEM) for the highest fluence, 300 mJ/cm2. The metallic nucleus phase were identified as either β-Co or Co3O4. Polycrystalline particles were deposited at 70 mJ/cm2, these particles contained α-Co, β-Co, CoO and Co3O4. The particles deposited at 300 mJ/cm2 were log-normally distributed and the total diameter had a mean geometric size of 25 nm while the nuclei had a mean diameter of 10 nm. X-ray photoelectron spectroscopy (XPS) measurements showed that the particles had a carbon content roughly ten times the amount of cobalt. Sputtering showed that both cobalt oxide and metallic cobalt was present. HRTEM micrographs of the particles revealed that only one phase was present in the whole nucleus, proving the nuclei were either oxide or metallic. Raman spectroscopy showed that that the carbon shell contained mostly amorphous carbon. Small domains of carbon of more graphitic character was embedded in the amorphous carbon shell in the 300 mJ/cm2 sample.

NITROGEN INCORPORATED HYDROGENATED AMORPHOUS CARBON THIN FILMS DEPOSITED BY MICROWAVE SURFACE-WAVE PLASMA CHEMICAL VAPOR DEPOSITION

2009 ◽  
Vol 23 (09) ◽  
pp. 2159-2165 ◽  
Author(s):  
SUDIP ADHIKARI ◽  
MASAYOSHI UMENO
Keyword(s):  
Thin Films ◽  
Chemical Vapor Deposition ◽  
Surface Wave ◽  
Amorphous Carbon ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Plasma Chemical ◽  
Hydrogenated Amorphous Carbon ◽  
Plasma Chemical Vapor Deposition ◽  
Hydrogenated Amorphous

Nitrogen incorporated hydrogenated amorphous carbon (a-C:N:H) thin films have been deposited by microwave surface-wave plasma chemical vapor deposition on silicon and quartz substrates, using helium, methane and nitrogen ( N 2) as plasma source. The deposited a-C:N:H films were characterized by their optical, structural and electrical properties through UV/VIS/NIR spectroscopy, Raman spectroscopy, atomic force microscope and current-voltage characteristics. The optical band gap decreased gently from 3.0 eV to 2.5 eV with increasing N 2 concentration in the films. The a-C:N:H film shows significantly higher electrical conductivity compared to that of N 2-free a-C:H film.

scholarly journals A reactive molecular dynamics study on the mechanical properties of a recently synthesized amorphous carbon monolayer converted into a nanotube/nanoscroll

2021 ◽  
Author(s):  
Marcelo Lopes Pereira Junior ◽  
Wiliam Ferreira da Cunha ◽  
Douglas Soares Galvão ◽  
Luiz Antonio Ribeiro Junior
Keyword(s):  
Mechanical Properties ◽  
Molecular Dynamics ◽  
Chemical Vapor Deposition ◽  
Amorphous Carbon ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Free Standing ◽  
Reactive Molecular Dynamics

Recently, laser-assisted chemical vapor deposition has been used to synthesize a free-standing, continuous, and stable monolayer amorphous carbon (MAC).

scholarly journals Facile fabrication of hierarchical porous carbon for a high-performance electrochemical capacitor

RSC Advances ◽  
2017 ◽  
Vol 7 (73) ◽  
pp. 46329-46335 ◽  
Author(s):  
Guixiang Du ◽  
Qiuxiao Bian ◽  
Jingbo Zhang ◽  
Xinhui Yang
Keyword(s):  
Porous Carbon ◽  
High Performance ◽  
Rate Capability ◽  
Electrochemical Capacitor ◽  
High Specific Capacitance ◽  
Cycling Performance ◽  
Hierarchical Porous Carbon ◽  
Hierarchical Porous ◽  
Facile Fabrication ◽  
Rapid Pyrolysis

A facile and rapid pyrolysis method is developed for the synthesis of 3D hierarchical porous carbon, which exhibits a high specific capacitance, good rate capability and good cycling performance.

One-pot synthesis of carbon coated Fe3O4 nanosheets with superior lithium storage capability

2015 ◽  
Vol 3 (8) ◽  
pp. 4716-4721 ◽  
Author(s):  
Guoxin Gao ◽  
Shiyao Lu ◽  
Bitao Dong ◽  
Zhicheng Zhang ◽  
Yuansuo Zheng ◽  
...  
Keyword(s):  
Amorphous Carbon ◽  
Large Scale ◽  
Solution Method ◽  
Lithium Storage ◽  
One Pot ◽  
One Pot Synthesis ◽  
Carbon Coated ◽  
Storage Properties

Large-scale flat Fe3O4 nanosheets coated by an amorphous carbon overlayer (denoted as Fe3O4@C NSs) was prepared via a simple one-pot solution method. When evaluated as an electrode for LIBs, the as-prepared Fe3O4@C NSs hybrids exhibit highly enhanced lithium storage properties.

Facile Fabrication of Nickel Oxide Hollow Spheres and Amorphous Carbon/Nickel Nanoparticles Composites Using Colloidal Carbonaceous Microspheres as Template

2005 ◽  
Vol 34 (8) ◽  
pp. 1174-1175 ◽  
Author(s):  
Mingbo Zheng ◽  
Jieming Cao ◽  
Yongping Chen ◽  
Xianjia Ma ◽  
Shaogao Deng ◽  
...  
Keyword(s):  
Nickel Oxide ◽  
Amorphous Carbon ◽  
Nickel Nanoparticles ◽  
Hollow Spheres ◽  
Facile Fabrication

Bimolecular-induced hierarchical nanoporous LiTi2(PO4)3/C with superior high-rate and cycling performance

2017 ◽  
Vol 53 (62) ◽  
pp. 8703-8706 ◽  
Author(s):  
Wenwei Sun ◽  
Jiehua Liu ◽  
Xiaoqian Liu ◽  
Xiaojing Fan ◽  
Kuan Zhou ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Hydrothermal Reaction ◽  
Cycling Performance ◽  
High Rate ◽  
Carbon Coated

Carbon-coated hierarchical LiTi2(PO4)3 was synthesized by a facile bimolecular (glucose and DMEA) assisted hydrothermal reaction and a solid-state reaction, and exhibits excellent high-rate and cycling performance.

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