Competitive effect of KOH activation on the electrochemical performances of carbon nanotubes for EDLC: Balance between porosity and conductivity

The potential use of multi-walled carbon nanotubes (MWCNTs) produced by chemical vapour deposition (CVD) as a conductive agent for electrodes in Li-ion batteries has been investigated. LiNi0.33Co0.33Mn0.33O2 (NCM) has been chosen as active material for positive electrodes, and a nano-sized TiO2-rutile for the negative electrodes. The electrochemical performances of the electrodes were studied by galvanostatic techniques and especially the influence of the nanotubes on the rate capability and cycling stability has been evaluated. The addition of MWCNTs significantly enhanced the rate performances of both positive and negative electrodes and improved the capacity retention upon cycling. The obtained results demonstrated that the addition of MWCNTs in low amounts to the electrode composition enables an increase in both energy and power density of a Li-ion battery.

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Electrochemical performances of cobalt oxide–carbon nanotubes electrodes via different methods as negative material for alkaline rechargeable batteries

RSC Advances ◽

10.1039/c5ra12721a ◽

2015 ◽

Vol 5 (90) ◽

pp. 73410-73415 ◽

Cited By ~ 1

Author(s):

Yanan Xu ◽

Yanyin Dong ◽

Xiaofeng Wang ◽

Yijing Wang ◽

Lifang Jiao ◽

...

Keyword(s):

Carbon Nanotubes ◽

Cobalt Oxide ◽

Rechargeable Batteries ◽

Electrochemical Performances ◽

Negative Materials ◽

Negative Material ◽

First Time

Co3O4/CNTs samples are synthesized via different methods and investigated as negative materials for alkaline rechargeable batteries for the first time.

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Preparation and Characterization of Pt-SnO2 Deposited on Multi-Walled Carbon Nano-Tubes for Methanol Electro-Oxidation

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.815.508 ◽

2013 ◽

Vol 815 ◽

pp. 508-511

Author(s):

Dan Zhang

Keyword(s):

Carbon Nanotubes ◽

Cyclic Voltammetry ◽

Pt Nanoparticles ◽

Electrochemical Performances ◽

Tin Oxides ◽

Carbon Nano Tubes ◽

Electro Oxidation

In this research, a sequential sol-thermal route has been used to prepare the SnO2 nanocolloid, Pt nanoparticles were then deposited on the nanosupport to obtain the Pt-SnO2/MWCNTs. The electrochemical performances of the catalysts were characterized by cyclic voltammetry and chronoamperometry. The Pt (fcc) crystalline was proved to be form on the surface of carbon nanotubes. The Pt based catalyst modified by tin oxides exhibit a electro-chemical performance for methanol electro-oxidation.

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Facile Synthesis of Cobalt Oxide Uniformly Coated on Multi-Wall Carbon Nanotubes for Supercapacitors

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.306-307.1148 ◽

2011 ◽

Vol 306-307 ◽

pp. 1148-1152 ◽

Cited By ~ 2

Author(s):

Liang Yu Gong ◽

Ling Hao Su

Keyword(s):

Carbon Nanotubes ◽

Cobalt Oxide ◽

Solid Phase ◽

Synthesis Method ◽

Electrochemical Performances ◽

Composite Electrodes ◽

Phase Synthesis ◽

Multi Wall Carbon Nanotubes ◽

Electrochemical Tests ◽

Transmission Electron

The composite electrodes of cobalt oxide and multi-wall carbon nanotubes (MWCNTs) are prepared by a simple low-temperature solid-phase synthesis method with the assistance of polyethylene glycol and their pseudocapacitive performances are investigated in alkaline solution by cyclic voltammetry and galvanostatic charge/discharge tests, respectively. Transmission electron microscope images show that cobalt oxide is uniformly coated on multi-wall carbon nanotubes and the homogeneous hybrid nanostructure are considered to be responsible for their preferable electrochemical performances. The electrochemical tests further reveal that the composite can deliver a maximum specific capacitance of 217 F/g with a biggest utilization of Co element when the content of MWCNTs increases to 50 wt.%.

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Biomass based porous carbon for supercapacitor by hydrothermal assisted activating method

E3S Web of Conferences ◽

10.1051/e3sconf/202123601016 ◽

2021 ◽

Vol 236 ◽

pp. 01016

Author(s):

Congcong Huang ◽

Yunhui Dong ◽

Xingjun Dong

Keyword(s):

Electrode Material ◽

High Performance ◽

Activated Carbons ◽

High Capacity ◽

Rate Capability ◽

High Energy ◽

High Energy Density ◽

Koh Activation ◽

Electrochemical Performances ◽

Adsorption Desorption

A facile route has been employed to synthesize a series of high performance activated carbons as the electrode material for supercapacitors. The structure of the carbons are characterized by N2 adsorption/desorption and FTIR spectroscopy. The electrochemical performances of the carbons as an electrode material were evaluated by cyclic voltammetry test and galvanostatic charge/discharge measurements. As a biomass derived carbon, KOH-1 exhibits high capacity, good rate capability and high energy density, indicating the promising application of hydrothermal combining with KOH activation method for biomass materials that used in supercapacitors

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Multi-Walled Carbon Nanotubes Modified Li3V2(PO4)3/Carbon Composites with Enhanced Electrochemical Performances as Cathode Materials for Li-Ion Batteries

International Journal of Electrochemical Science ◽

10.20964/2016.06.16 ◽

2016 ◽

pp. 5217-5225 ◽

Cited By ~ 4

Author(s):

Xiaoyu Cao ◽

Keyword(s):

Carbon Nanotubes ◽

Cathode Materials ◽

Carbon Composites ◽

Electrochemical Performances ◽

Li Ion Batteries ◽

Multi Walled Carbon Nanotubes ◽

Li Ion ◽

Walled Carbon Nanotubes

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FeSe2/carbon nanotube hybrid lithium-ion battery for harvesting energy from triboelectric nanogenerators

Chemical Communications ◽

10.1039/c9cc05069h ◽

2019 ◽

Vol 55 (73) ◽

pp. 10960-10963 ◽

Cited By ~ 6

Author(s):

Yang Tian ◽

Zhaoying Wang ◽

Jiangming Fu ◽

Kequan Xia ◽

Jianguo Lu ◽

...

Keyword(s):

Carbon Nanotubes ◽

Carbon Nanotube ◽

Lithium Ion Batteries ◽

High Voltage ◽

Voltage Pulse ◽

High Stability ◽

Lithium Ion ◽

High Voltage Pulse ◽

Electrochemical Performances ◽

Triboelectric Nanogenerators

FeSe2–carbon nanotubes hybrid lithium ion batteries, exhibiting excellent electrochemical performances, could withstand the high-voltage pulse to directly harvest electricity from triboelectric nanogenerators with high stability.

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