Enhancing 5 V capacitor performance by adding single walled carbon nanotubes into an ionic liquid electrolyte

2015 ◽  
Vol 3 (31) ◽  
pp. 15858-15862 ◽  
Author(s):  
Chuiyan Kong ◽  
Weizhong Qian ◽  
Chao Zheng ◽  
Wei Fei
Keyword(s):  
Carbon Nanotubes ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Energy Density ◽  
Power Density ◽  
Single Walled Carbon Nanotubes ◽  
Liquid Electrolyte ◽  
Ionic Liquid Electrolyte ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

A nanofluid electrolyte of single walled carbon nanotubes and ionic liquids enhances the energy density, power density and cycling stability of nanotube electrodes at 5 V.

Strain–capacitance relationship in polymer actuators based on single-walled carbon nanotubes and ionic liquid gels

2017 ◽  
Vol 199 ◽  
pp. 405-422 ◽  
Author(s):  
Hyacinthe Randriamahazaka ◽  
Kinji Asaka
Keyword(s):  
Carbon Nanotubes ◽  
Ionic Liquid ◽  
Electrochemical Impedance ◽  
Mechanical Energy ◽  
Single Walled Carbon Nanotubes ◽  
Electromechanical Properties ◽  
Ionic Liquid Electrolyte ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes ◽  
Capacitance Coefficient

We investigate the electromechanical properties of bucky-gel electrochemical actuators incorporating various amounts of single-walled carbon nanotubes and an ionic liquid electrolyte, 1-butyl-3-methylimidazolium tetrafluoroborate, that are able to convert electrochemical energy into mechanical energy. The interplay between mechanical and electrochemical effects is studied. The electromechanical responses are investigated by means of electrochemical impedance spectroscopy and bending displacement measurements. We develop a theoretical model that allows us to rationalize the electromechanical properties of the bucky-gel actuators. This model takes into account electrochemical stress due to the intercalation (de-intercalation) process, which generates the strain and bending of the actuators. We then analyze the relationship between the strain and the real part of the complex capacitance by introducing a strain–capacitance coefficient. This coefficient is related to the electrochemical stress and the amount of the ionic adsorption (desorption) at the double-layer. From a practical point of view, the determination of the strain–capacitance coefficient is helpful for characterizing and optimizing the performance of electrochemical actuators.

Ionic liquids plus microwave irradiation: a general methodology for the retro-functionalization of single-walled carbon nanotubes

Nanoscale ◽  
2018 ◽  
Vol 10 (33) ◽  
pp. 15782-15787 ◽  
Author(s):  
Myriam Barrejón ◽  
Zois Syrgiannis ◽  
Maurizio Prato
Keyword(s):  
Carbon Nanotubes ◽  
Ionic Liquids ◽  
Microwave Irradiation ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
General Methodology ◽  
Walled Carbon Nanotubes

Tunable functionalization of SWCNTs through the use of ionic liquids under microwave irradiation.

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