刘伟
108

个人信息Personal Information

副教授

硕士生导师

性别:男

毕业院校:広岛大学

学位:博士

所在单位:化工学院

学科:化学工程

办公地点:综合楼A509

联系方式:liuwei08@dlut.edu.cn

电子邮箱:liuwei08@dlut.edu.cn

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高电压锂离子电池正极材料LiNi0.5Mn1.5O4制备及改性

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发表时间:2013-01-01

发表刊物:大连理工大学学报

所属单位:化工学院

期号:1

页面范围:18-23

ISSN号:1000-8608

摘要:LiNi0.5Mn1.5O4 and LiNi0.4Mg0.1Mn1.5O4 are prepared via co-precipitation and high temperature calcination method using ammonium oxalate as the precipitator. XRD, SEM and constant-current charge and discharge tests are conducted to characterize the products. XRD patterns indicate that all samples show cubic spinel structure with Fd3m space group. Electrochemical measurement demonstrates that the samples have two main discharging plateaus, 4.7 and 4.1 V, respectively. The product sintered at 800��C presents the best rate performance, while the product sintered at 900��C presents the best cycle performance with an initial specific capacity of 124.2 mAh��g-1 and 92.7% of them can be retained after 30 cycles at 0.1 C. The capacity retention can be improved to 95.7% after 30 cycles when Mg doping is applied on the LiNi0.5Mn1.5O4.

备注:新增回溯数据