Microstructure and Electrical Conductivity of Electrospun Titanium Oxynitride Carbon Composite Nanofibers

Published in Nanomaterials, vol. 12(13), 2177 (2022) · MDPI · Open access, CC BY
DOI: 10.3390/nano12132177

Summary

Titanium oxynitride carbon composite nanofibres were made by electrospinning followed by heat treatment in ammonia gas, converting a spun polymer precursor into a conductive ceramic-carbon composite. The distinctive part is the measurement: electrical conductivity was determined in situ on individual nanofibres using a four-probe technique, rather than inferred from a whole mat. Combined with X-ray and electron diffraction, electron microscopy and spectroscopy, this links the microstructure of a single fibre directly to how well it conducts.

Authors & Affiliations

  • Gorazd Koderman Podboršek
    Department of Materials Chemistry, National Institute of Chemistry, Ljubljana, Slovenia
  • Špela Zupančič
    Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Ljubljana, Slovenia
  • Rok Kaufman
    Faculty of Mathematics and Physics, University of Ljubljana, Slovenia
  • Angela Šurca Kaufman
    Department of Materials Chemistry, National Institute of Chemistry, Ljubljana, Slovenia
  • Ana Marsel
    Department of Materials Chemistry, National Institute of Chemistry, Ljubljana, Slovenia
  • Andraž Pavlišič
    Department of Catalysis and Chemical Reaction Engineering, National Institute of Chemistry, Ljubljana, Slovenia

Linari Electrospinning Systems

Linari system with precision syringe pump
A Linari Engineering system (Pisa, Italy) fed the polymer solution to the needle at a constant rate of 763 µl/h - the sub-millilitre precision our pumps are specified for, and a prerequisite when a precursor fibre must later survive calcination. See our range of systems.

Topics

Conductive Ceramic Nanofibers Single-Fiber Conductivity Heat Treatment Microstructure Analysis

Materials

Titanium oxynitride Carbon nanofibers
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