High-performance method of carbon nanotubes modification by microwave plasma for thin composite films preparation

Abstract

In this work we present a simple and efficient method of nitrogen plasma modification of carbon nanotubes (CNTs). The process allows for treatment of the nanotubes in the form of powder with quite a high yield (65 mg of CNTs per hour). The modified carbon nanotubes contain approx. 3.8% nitrogen, mostly in the pyridinic form. Plasma treated CNTs exhibit better dispersibility in water and higher electric capacitance than pristine CNTs. Modified CNTs are a proper component of novel nanocomposites based on the conducting polymer poly(3,4-ethyleneidoxythiophene). Electrodeposited thin layers of the nanocomposite exhibit improved electrochemical properties (higher capacitance, better stability, lower resistance, faster diffusion) compared to the pure polymer layers.

Graphitic Carbon Nitride (g‐C3N4)‐Derived N‐Rich Graphene with Tuneable Interlayer Distance as a High‐Rate Anode for Sodium‐Ion Batteries

“…Evidently, the N 1s region of all N‐FLG‐T samples can be deconvoluted into three peaks at around 398.4, 399.5, and 400.2 eV, assigning to pyridinic, pyrrolic, and graphitic N, respectively . It is well known that the nitrogen configuration has a substantial influence on the structure and activity of resulting materials . With respect to the electron configuration of N in the carbon matrix (Figure d), pyridinic N with a lone pair occupying an sp 2 orbital and pyrrolic N with a p orbital lone pair are very active for absorbing Na + and contribute to increasing surface capacitive capacity.…”

Investigation on cure kinetics of epoxy resin containing carbon nanotubes modified with hyper-branched polyester

“…[8][9][10][11][12][13] The multi-walled carbon nanotubes (CNTs) are ideal llers for polymer composites due to their high Young's modulus as well as good electrical and thermal conductivity. 9,[14][15][16][17] The addition of a small amount of CNTs can strongly improve the electrical, thermal and mechanical properties of the polymer matrix, resulting in the composites with good processability, balanced stiffness and toughness as well as other functional properties. [18][19][20][21] However, the main problem is that, the CNTs are insoluble and difficult to be evenly dispersed in the matrix due to its inorganic nature and lack of functional groups on the surface.…”

Superresilient Hard Carbon Nanofabrics for Sodium‐Ion Batteries

“…[36] considerable electrostatic repulsion leads to expanding the interlayer distance to a larger extent. [37] According to the result of high-resolution X-ray photoelectron spectra, the detailed contents of pyrrolic and pyridinic nitrogen atoms in the carbonaceous are investigated. [10,25,38] Specifically, the N 1s region of n-CNF and s-HCNF samples can be deconvoluted into three peaks around 398.4, 399.5, and 400.2 eV, which are assigned to pyridinic, pyrrolic, and quaternary nitrogen, respectively.…”