TLM-PSD model for optimization of energy and power density of vertically aligned carbon nanotube supercapacitor

TLM-PSD model for optimization of energy and power density of vertically aligned carbon nanotube supercapacitor

Electrochemical capacitors with fast charging-discharging rates are very promising for hybrid electric vehicle industries including portable electronics. Complicated pore structures have been implemented in active materials to increase energy storage capacity, which often leads to degrade dynamic response of ions. In order to understand this trade-off phenomenon, we report a theoretical model b...

High density, vertically-aligned carbon nanotube membranes.

A method is presented to prepare high-density, vertically aligned carbon nanotube (VA-CNT) membranes. The CNT arrays were prepared by chemical vapor deposition (CVD), and the arrays were collapsed into dense membranes by capillary-forces due to solvent evaporation. The average space between the CNTs after shrinkage was approximately 3 nm, which is comparable to the pore size of the CNTs. Thus, ...

OPTIMIZATION OF CARBON NANOTUBE SUPERCAPACITOR ELECTRODE By

Vertically aligned pearl-like carbon nanotube arrays for fiber spinning.

Due to their unique structure and physical properties and numerous potential applications, carbon nanotubes have been extensively studied recently and are expected to attract more attention in the future.1 Morphology control of carbon nanotubes represents one of the most explored directions. Except for the normal linear structure, nanotubes with morphologies of ring,2 rocket,2 branch,3 cone,4 b...

Large-Displacement Indentation Testing of Vertically Aligned Carbon Nanotube Arrays

Mechanical properties and deformation of the vertically aligned carbon nanotube arrays (VA-CNTs) has been examined with large-displacement indentation tests inside a scanning electronic microscope (SEM). The in-situ indentation allows for establishment of the load-depth responses and real-time observations of the deformation processes. Under a cylindrical, flat indenter, the VA-CNTs exhibit ela...