Electrodeposition of iron oxide nanorods on carbon nanofiber scaffolds as an anode material for lithium-ion batteries

被引：72

作者：

Wu, Mao-Sung ^{[1
]}

Ou, Yang-Hui ^{[1
]}

Lin, Ya-Ping ^{[1
]}

机构：

[1] Natl Kaohsiung Univ Appl Sci, Dept Chem & Mat Engn, Kaohsiung 807, Taiwan

来源：

ELECTROCHIMICA ACTA | 2010年 / 55卷 / 09期

关键词：

Vapor-grown carbon nanofiber; Electrophoretic deposition; Iron oxide anode; Anodic electrodeposition; Lithium-ion batteries; DEPENDENT ELECTROCHEMICAL PROPERTIES; ALPHA-FE2O3; NANOSTRUCTURES; MANGANESE OXIDE; THIN-FILMS; COMPOSITE; INTERCALATION; PERFORMANCE; SIZE; CAPACITORS; ADDITIVES;

D O I：

10.1016/j.electacta.2009.12.100

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Iron oxide film with spaced radial nanorods is formed on the VGCF (vapor-grown carbon nanofiber) scaffolds by means of anodic electrodeposition. X-ray diffraction, scanning electron microscopy, and transmission electron microscopy show that the iron oxide film deposited on the VGCF surface is alpha-Fe2O3 and consists of spaced radial nanorods having 16-21 nm in diameter after annealing at 400 degrees C. Galvanostatic charge/discharge results indicate that the alpha-Fe2O3/VGCF anode (970 mAh g(-1)) has higher capacity than bare alpha-Fe2O3 anode (680 mAh g(-1)) at 10C current discharge. VGCF scaffolds fabricated by electrophoretic deposition favor the electron conduction, and the spaced radial nanorods on VGCFs facilitate the migration of lithium ion from the electrolyte. Electrochemical reactions between alpha-Fe2O3 and lithium ion are therefore improved significantly by this tailored architecture. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：3240 / 3244

页数：5

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