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高容量富锂层状材料Li2MnO3·2 LiNi0.5Mn0.5O2的制备与表征

姜冬冬 赵方辉 杨其铭 韦达鸿 殷进超

电源技术Issue(4):668-670,3.
电源技术Issue(4):668-670,3.

高容量富锂层状材料Li2MnO3·2 LiNi0.5Mn0.5O2的制备与表征

Fabrication and characterization of lithium-rich layered cathode material Li2MnO3·2 LiNi0.5Mn0.5O2 with high capacity

姜冬冬 1赵方辉 1杨其铭 1韦达鸿 1殷进超1

作者信息

  • 1. 深圳清华大学研究院先进储能材料及器件实验室,广东深圳518057
  • 折叠

摘要

Abstract

The lithium-rich layered cathode material Li2MnO3·2 LiNi0.5Mn0.5O2 was fabricated by co-precipitation method. The structure and electrochemical properties of the material were examined using scanning electron microscopy (SEM), X-ray diffraction (XRD), cyclic voltammetry and galvanostatic charging and discharging test. The results show that the material has high capacity and good cycle performance. The first discharge special capacity is 187.2 mAh/g;the first and second cycle coulombic efficiency are respectively 74.3%and 97.6%. After 30 cycles, the discharge special capacity stil remains 156.8 mAh/g, which is 83.7%of that of the first cycle.

关键词

富锂材料/锂离子电池/共沉淀法

Key words

lithium-rich material/lithium ion battery/co-precipitation

分类

信息技术与安全科学

引用本文复制引用

姜冬冬,赵方辉,杨其铭,韦达鸿,殷进超..高容量富锂层状材料Li2MnO3·2 LiNi0.5Mn0.5O2的制备与表征[J].电源技术,2015,(4):668-670,3.

基金项目

深圳市战略性新兴产业发展专项资金(JCYJ2012-0619140959431, ZDSY20120619141659791) (JCYJ2012-0619140959431, ZDSY20120619141659791)

电源技术

OA北大核心CSCDCSTPCD

1002-087X

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