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Updated: Apr 30, 2026
Writing and Low-Temperature Characterization of Oxide Nanostructures
Published on: July 18, 2014
Thermal stability and reduction of iron oxide nanowires at moderate temperatures
Annalisa Paolone1, Marco Angelucci2, Stefania Panero3
1CNR-ISC, U.O.S. La Sapienza, Piazzale Aldo Moro 2, I - 00185 Roma, Italy.
Background:
The thermal stability of iron oxide nanowires, which were obtained with a hard template method and are promising elements of Li-ion based batteries, has been investigated by means of thermogravimetry, infrared and photoemission spectroscopy measurements.
Results:
The chemical state of the nanowires is typical of the Fe2O3 phase and the stoichiometry changes towards a Fe3O4 phase by annealing above 440 K. The shape and morphology of the nanowires is not modified by moderate thermal treatment, as imaged by scanning electron microscopy.
Conclusion:
This complementary spectroscopy-microscopy study allows to assess the temperature limits of these Fe2O3 nanowires during operation, malfunctioning or abuse in advanced Li-ion based batteries.
