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
收藏
页码：323 / 328
页数：6
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