Stoichiometric synthesis of pure NiFe2O4 spinel from layered double hydroxide precursors for use as the anode material in lithium-ion batteries rtyree

被引：88

作者：

Li, X. D. ^{[1
]}

Yang, W. S. ^{[1
]}

Li, F. ^{[1
]}

Evans, D. G. ^{[1
]}

Duan, X. ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, Minist Educ, Key Lab Sci & Technol Controllable Chem React, Beijing 100029, Peoples R China

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2006年 / 67卷 / 5-6期

基金：

中国国家自然科学基金;

关键词：

oxides; chemical synthesis; thermogravimetric analysis (TGA); electrochemical properties;

D O I：

10.1016/j.jpcs.2006.01.096

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A pure NiFe2O4 spinel has been prepared from an Ni-Fe2+-Fe3+-LDHs precursor under mild conditions for use as the anode material in Li-ion batteries. XRD, elemental analysis and a combination of TG-DTG-DTA and evolved gas mass spectrometry (EGMS) were carried out to characterize the calcined products. The main factors, affecting the electrochemical performance of the materials, were investigated. The material calcined at 700 degrees C for 3 h performs best with an initial discharge capacity of 1239 mAh g(-1) and a reversible capacity of 701 mAh g(-1). The major advantage of the LDHs precursor method for the synthesis of NiFe2O4 is that it uses a readily available precursor and affords a spinel with a small particle size and uniform distribution of metal cations, hence, resulting in a good electrochemical performance. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：1286 / 1290

页数：5

共 20 条

[1] Changes in oxidation state and magnetic order of iron atoms during the electrochemical reaction of lithium with NiFe2O4 [J].