个人信息Personal Information
教授
博士生导师
硕士生导师
性别:男
毕业院校:大连理工大学
学位:博士
所在单位:化工学院
学科:化学工程. 水科学与技术
办公地点:西部校区化工综合楼A503
联系方式:gchliu@dlut.edu.cn
电子邮箱:gchliu@dlut.edu.cn
Hollow Fe3O4/C spheres as superior lithium storage materials
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论文类型:期刊论文
发表时间:2012-01-01
发表刊物:JOURNAL OF POWER SOURCES
收录刊物:SCIE、EI
卷号:197
页面范围:305-309
ISSN号:0378-7753
关键字:Lithium ion battery; Anode material; Spinel iron oxide; Hollow sphere; High capacity
摘要:Unique hollow Fe3O4/C spheres are prepared by a simple one-pot solvothermal method, with spinel structure and 750 nm in diameter identified by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) techniques. The hollow Fe3O4/C spheres exhibit excellent cycling and rate performance as anode material for lithium ion batteries, delivering reversible specific capacities of 984 mAh g(-1) even after 70 cycles at 0.2C, 620 mAh g(-1) at 2 C, and 460 mAh g(-1) at 5 C. respectively. Lithium insertion mechanisms are also proposed in terms of the ex situ XRD analysis of the electrodes after discharged and charged to certain voltages together with cyclic voltammetry (CV) and voltage profile. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.