文献类型：期刊文献

中文题名：超声辅助共沉淀法制备LiNi_(0.5)Mn_(1.5)O_4及其电化学性能研究

英文题名：Synthesis and electrochemical properties of LiNi_(0.5)Mn_(1.5)O_4 by ultrasonic-assisted co-precipitation method

作者：陈万超[1];吴瑞峰[2];王前进[1];张丽伟[3];王新昌[1]

第一作者：陈万超

机构：[1]郑州大学物理工程学院教育部材料物理重点实验室;[2]郑州旅游职业学院机电系;[3]新乡学院

第一机构：郑州大学物理工程学院教育部材料物理重点实验室,河南郑州450052

年份：2012

卷号：31

期号：4

起止页码：52-55

中文期刊名：电子元件与材料

外文期刊名：Electronic Components and Materials

收录：CSTPCD;;北大核心:【北大核心2011】；CSCD:【CSCD_E2011_2012】；

基金：河南省重点科技攻关资助项目(No.112102210282)

语种：中文

中文关键词：锂离子电池:LiNi0.5Mn1.5O4;正极材料;超声辅助共沉淀法

外文关键词：lithium ion batteries; LiNi0.5Mn1.5O4; cathode material; ultrasonic-assisted co-precipitation method

摘要：采用超声辅助共沉淀法合成了锂离子电池用LiNi0.5Mn1.5O4正极材料,借用XRD、SEM及电化学性能测试对其进行表征,研究了超声辅助对LiNi0.5Mn1.5O4的微观结构、形貌及电化学性能的影响。研究结果表明,采用超声辅助能够消除LixNi1–xO杂相,获得粒径更为均匀的纯相尖晶石结构的LiNi0.5Mn1.5O4。超声辅助能够提高LiNi0.5Mn1.5O4的电化学性能,在2C倍率下放电20次循环后未超声和超声辅助样品的容量保持率分别为95.05%和97.42%。
Cathode material LiNi0.5Mn1.5O4 for lithium-ion batteries was synthesized via ultrasonic-assisted co-precipitation method. The effects of the ultrasound on the microstructure, surface morphology and electrochemical performance of LiNi0.sMnl,sO4 were studied using XRD, SEM and electrochemical property measurements. The results show that the ultrasonic-assisted is benefit to eliminate LixNi1-xO impurity, and the synthesized LiNi0.5Mn1.5O4 using ultrasound-assisted co-precipitation method with a pure spinel structure possesses better particle uniformity and higher electrochemical performance. After cycling 20 times at 2C, the capacity retention rates of LiNi0.5Mn1.5O4 synthesized by co-precipitation method and ultrasonic-assisted co-precipitation method are 95.05% and 97.42%, respectively.