Effect of different aqueous electrolytes on electrochemical performance of activated carbon anchored by multiwalled carbon nanotubes for supercapacitor applications

2020 ◽  
Author(s):  
Manoranjan Mandal ◽  
Subhasri Subudhi ◽  
Injamul Alam ◽  
B. V. R. S. Subramanyam ◽  
Sonali Das ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Activated Carbon ◽  
Electrochemical Performance ◽  
Multiwalled Carbon Nanotubes ◽  
Aqueous Electrolytes ◽  
Multiwalled Carbon ◽  
Supercapacitor Applications

Asymmetric supercapacitor containing poly(3-methyl thiophene)-multiwalled carbon nanotubes nanocomposites and activated carbon

2013 ◽  
Vol 94 ◽  
pp. 182-191 ◽  
Author(s):  
P. Sivaraman ◽  
Arup R. Bhattacharrya ◽  
Sarada P. Mishra ◽  
Avinash P. Thakur ◽  
K. Shashidhara ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Activated Carbon ◽  
Multiwalled Carbon Nanotubes ◽  
Asymmetric Supercapacitor ◽  
Multiwalled Carbon

Preparation and Characterization of Activated Carbon Nanofiber Webs Containing Multiwalled Carbon Nanotubes by Electrospinning

2007 ◽  
Vol 119 ◽  
pp. 55-58 ◽  
Author(s):  
Soo Jin Park ◽  
Se Hyuk Im ◽  
John M. Rhee ◽  
Young Seak Lee
Keyword(s):  
Carbon Nanotubes ◽  
Activated Carbon ◽  
Multiwalled Carbon Nanotubes ◽  
High Power ◽  
Carbon Nanofiber ◽  
Rechargeable Batteries ◽  
High Specific Surface Area ◽  
Electrospinning Process ◽  
Multiwalled Carbon ◽  
Long Cycle Life

Electrochemical double layer capacitors (EDLCs) are promising high power energy sources for many different applications where high power density, high cycle efficiency and long cycle life are needed. However, because the energy density of EDLCs is small compared to that of rechargeable batteries one needs to increase the capacitance of EDLCs. The nanofiber diameters range from 50 nm to 400 nm, depending on the concentration of polymer solution types, tip-to-collector distance, applied voltage, and viscosity of the solution. The main advantage of the electrospinning process is that it is a simple means to prepare continuous fibers with unusually large surface to volume ratios and pore structure surfaces. So, feature of nanofiber webs are the high specific surface area developed by creating pores on the nanofiber surface. In this work, the multiwalled carbon nanotubes embedded polyacrylonitrile solutions in N,N-dimethylformamide (DMF) were electrospun to be webs consisting of 350 nm ultrafine nanofibers, which were used to produce a series of activated carbon nanofibers with developed mesoporosity and high electrical conductivity through stabilization, carbonization-activation processes.

scholarly journals Electrochemical Performance of Lithium-Ion Capacitors Using Pre-Lithiated Multiwalled Carbon Nanotubes as Anode

NANO ◽  
2017 ◽  
Vol 12 (04) ◽  
pp. 1750051 ◽  
Author(s):  
Manyuan Cai ◽  
Xiaogang Sun ◽  
Yanyan Nie ◽  
Wei Chen ◽  
Zhiwen Qiu ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Energy Density ◽  
Electrochemical Performance ◽  
Multiwalled Carbon Nanotubes ◽  
Current Density ◽  
Lithium Ion ◽  
Multiwalled Carbon ◽  
Charge Discharge

Pre-lithiated multiwalled carbon nanotube anode was prepared by internal short circuit approach(ISC) for 5[Formula: see text]min, 30[Formula: see text]min, 60[Formula: see text]min and 120[Formula: see text]min respectively. Lithium ion capacitors (LICs) were assembled by using pre-lithiated multiwalled carbon nanotubes as anodes and activated carbon (AC) as cathodes. The structure of multiwalled carbon nanotubes and electrodes were investigated by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The electrochemical performance of pre-lithiated multiwalled carbon nanotube electrodes and pristine carbon nanotube electrodes were tested by galvanostatic charge/discharge and electrochemical impedance. The results indicated that pre-lithiation carbon nanotubes greatly improved the charge/discharge performance of LICs. The energy density was four times than conventional electric double-layer capacitors (EDLCs) at the current density of 100[Formula: see text]mA/g. The LICs achieved a specific capacitance of 59.3[Formula: see text]F/g at the current density of 100[Formula: see text]mA/g with 60[Formula: see text]min pre-lithiatiation process. The maximum energy density and power density was 96[Formula: see text]Wh/kg and 4035[Formula: see text]W/kg, respectively. The energy density still remained about 89.0% after 1000 cycles. The LIC showed excellent supercapacitor performance.

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