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.

Thermal stability and reduction of iron oxide nanowires at moderate temperatures / Annalisa, Paolone; Angelucci, Marco; Panero, Stefania; Betti, Maria Grazia; Mariani, Carlo. - In: BEILSTEIN JOURNAL OF NANOTECHNOLOGY. - ISSN 2190-4286. - STAMPA. - 5:1(2014), pp. 323-328. [10.3762/bjnano.5.36]

Thermal stability and reduction of iron oxide nanowires at moderate temperatures

ANGELUCCI, MARCO;PANERO, Stefania;BETTI, Maria Grazia;MARIANI, CARLO
2014

Abstract

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.
2014
xps; scanning electron microscopy (sem); ir spectroscopy; iron oxide; nanowires; thermogravimetry
01 Pubblicazione su rivista::01a Articolo in rivista
Thermal stability and reduction of iron oxide nanowires at moderate temperatures / Annalisa, Paolone; Angelucci, Marco; Panero, Stefania; Betti, Maria Grazia; Mariani, Carlo. - In: BEILSTEIN JOURNAL OF NANOTECHNOLOGY. - ISSN 2190-4286. - STAMPA. - 5:1(2014), pp. 323-328. [10.3762/bjnano.5.36]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/548881
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