Conductivity enhancement of carbon nanotube composites by electrolyte addition

Abstract

Articles you may be interested inNovel spectro-electrochemical cell for in situ/operando observation of common composite electrode with liquid electrolyte by X-ray absorption spectroscopy in the tender X-ray region Rev. Sci. Instrum. 85, 084103 (2014); 10.1063/1.4891036 Composite electrodes of activated carbon derived from cassava peel and carbon nanotubes for supercapacitor applications AIP Conf. Proc. 1554, 70 (2013); 10.1063/1.4820286 Fabrication of self-organized conical microstructures by excimer laser irradiation of cyanoacrylate-carbon nanotube composites Appl. Phys. Lett. 86, 063105 (2005); 10.1063/1.1862775 Electromechanical actuation of composite material from carbon nanotubes and ionomeric polymer Synthesis and characterization of a new polyaniline/multi-walled carbon nanotubes composite AIP Conf.

Use of Aligned Carbon Nanotubes as Electric Field Sensors

“…significantly with E. Accordingly, R/R o decrease in Figure 5(b) must originate from reduced R con and R con -governed D 2 is further supported by calculations based on Arrhenius plot R = R o exp (−Ea/kBT ) where E a is extracted from R/R o profile slopes at different T ( Figure 5(c)) [5]. We find that E a decreases by 46.98 × 10 −5 eV at E = 0.04 mV/Å, by 50.14 × 10 −5 eV at 0.06 mV/Å and by 52.78 × 10 −5 eV at 0.08 mV/Å (Table 2), supporting E a -E (or R-E) scaling relation.…”

“…Study also reveals that transport through individual tubes is governed by band structure near to the Fermi level (E F ) and conductance can be modulated with a gate electrode at both negative and positive fields [4]. Conduction however changes from diffusive to hopping mode as nanotubes aggregate and hopping range is controlled by Boltzmann energy (k B T ) [5]. At high temperature, carriers hop simultaneously along transverse and longitudinal directions and tube resistance (R) is determined by structure factors, including aspect ratio and degree of graphitization [6].…”

“…Transfer is restricted as temperature decreases and R arises mainly from intertube barrier (E a ). Previous workers have discovered that E a can be reduced by electrolyte addition and chemical treatments; the former results in intercalation of coordinated cations and provides low energy passages between tubes [5]. Chemical treatments produce dipolar defects and reduced E a is owing to preferential hopping through oxygenated lattices and dangling edges [7].…”

Current Advances in the Carbon Nanotube/Thermotropic Main-Chain Liquid Crystalline Polymer Nanocomposites and Their Blends

“…However, for the composites with the functionalized MWCNTs, the flawless electronic structure of MWCNT was destroyed during the functionalization. Due to the severe environment during the functionalization, the sp 2 carbon structure of MWCNTs was changed to sp 3 carbon structure during the covalent functionalization and thus, their excellent electronic structure was demolished [65,66]. Therefore, to improve the electrical properties of MWCNT/polymer composites, a balance is required between the improved dispersion of MWCNTs in the matrix and the damage to their carbon-carbon bonds due to the covalent functionalization.…”

“…The percolation threshold of CNT/polymer composites has been reported to range from 0.0025 vol.% [64] to several vol.%. [65]. The key factors determining a percolation threshold for electrical conductivity in CNT/polymer nanocomposites include dispersion [66], alignment [67], and aspect ratio [66][67][68] of carbon nanotubes [66].…”