High capacity ZnFe2O4 anode material for lithium ion batteries

被引：239

作者：

Ding, Yu ^{[1
]}

Yang, Yifu ^{[1
]}

Shao, Huixia ^{[1
]}

机构：

[1] Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2011年 / 56卷 / 25期

关键词：

Zinc ferrite; Anode; Li-ion battery; Polymer pyrolysis method; EXPANDED MESOCARBON MICROBEADS; COBALT FERRITE NANOPARTICLES; ELECTROCHEMICAL CHARACTERIZATION; THIN-FILMS; REVERSIBLE CAPACITY; HOLLOW NANOSPHERES; RATE CAPABILITY; PERFORMANCE; NANOCRYSTALLINE; FABRICATION;

D O I：

10.1016/j.electacta.2011.08.031

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

070208 [无线电物理];

摘要：

A nanostructured ternary transition metal oxide, ZnFe2O4, is synthesized via the simple polymer pyrolysis method. The characteristics of the material are examined by thermogravimetry. Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. The electrochemical test results show that this method of ZnFe2O4 synthesis produces high specific capacities and good cycling performance, with an initial specific capacity as high as 1419.6 mAh g(-1) at first discharge that is maintained at over 800 mAh g(-1) even after 50 charge-discharge cycles. The electrode also presents a good rate capability, with a high rate of 4C (1C= 928 mA g(-1)), a reversible specific capacity that can be as high as 400 mAh g(-1). ZnFe2O4 is a potential alternative to high-performance nanostructured anode material in lithium ion batteries. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：9433 / 9438

页数：6

共 34 条

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