The electrochemical behavior of low-temperature synthesized FeSn2 nanoparticles as anode materials for Li-ion batteries

被引：22

作者：

Nwokeke, U. G. ^{[1
]}

Alcantara, R. ^{[1
]}

Tirado, J. L. ^{[1
,2
]}

Stoyanova, R. ^{[2
]}

Zhecheva, E. ^{[2
]}

机构：

[1] Univ Cordoba, Lab Quim Inorgan, E-14071 Cordoba, Spain

[2] Bulgarian Acad Sci, Inst Gen & Inorgan Chem, BU-1113 Sofia, Bulgaria

来源：

JOURNAL OF POWER SOURCES | 2011年 / 196卷 / 16期

关键词：

Lithium-ion batteries; Iron/tin intermetallics; Mossbauer spectroscopy; Electron paramagnetic resonance; MOSSBAUER-SPECTROSCOPY; LITHIUM; ELECTRODES; POWDERS;

D O I：

10.1016/j.jpowsour.2010.10.071

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Tin-containing nanometric and amorphous intermetallics and alloys are envisaged as negative electrodes for high-capacity lithium ion batteries. Nanocrystalline FeSn2 has been prepared by reduction of Sn2+ and Fe3+ in tetraethylene glycol at 185 degrees C. Microcrystalline FeSn2 has been prepared at 490 degrees C. The properties of nano-FeSn2 and micro-FeSn2 have been observed to be very different. The small particles size hinders the long-range magnetism and consequently the Mossbauer spectra are modified. The nanocrystalline particles of FeSn2 show exothermal effects in the DTA experiment that are not observed in the micrometric particles. Nanocrystalline FeSn2 exhibits a much better electrochemical behavior and electrode stability than microcrystalline FeSn2. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：6768 / 6771

页数：4

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