Thermal stability and reduction of iron oxide nanowires at moderate temperatures

被引：8

作者：

Paolone, Annalisa ^{[1
]}

Angelucci, Marco ^{[2
]}

Panero, Stefania ^{[3
]}

Betti, Maria Grazia ^{[2
]}

Mariani, Carlo ^{[2
]}

机构：

[1] UOS La Sapienza, CNR ISC, I-00185 Rome, Italy

[2] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[3] Univ Roma La Sapienza, Dipartimento Chim, I-00185 Rome, Italy

来源：

BEILSTEIN JOURNAL OF NANOTECHNOLOGY | 2014年 / 5卷

关键词：

IR spectroscopy; iron oxide; nanowires; scanning electron microscopy (SEM); thermogravimetry; XPS; ANODE MATERIAL; LITHIUM; GRAPHENE; NANOPARTICLES; PERFORMANCE; NANOSTRUCTURES; COMPOSITE; GRAPHITE;

D O I：

10.3762/bjnano.5.36

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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.

引用

页码：323 / 328

页数：6

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