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[1]陈鹏a,b,钟盛文a,等.烧结气氛对无钴镍基正极材料LiNi0.7Mn0.3O2性能的影响[J].有色金属科学与工程,2015,(04):52-57.[doi:10.13264/j.cnki.ysjskx.2015.04.011]
 CHEN Penga,b,ZHONG Shengwena,et al.Effect of sintering atmosphere on electrochemical performance of cobalt free nickel rich LiNi0.7Mn0.3O2 cathode material[J].,2015,(04):52-57.[doi:10.13264/j.cnki.ysjskx.2015.04.011]
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烧结气氛对无钴镍基正极材料LiNi0.7Mn0.3O2性能的影响(/HTML)
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《有色金属科学与工程》[ISSN:1674-9669/CN:36-1311/TF]

卷:
期数:
2015年04期
页码:
52-57
栏目:
出版日期:
2015-08-20

文章信息/Info

Title:
Effect of sintering atmosphere on electrochemical performance of cobalt free nickel rich LiNi0.7Mn0.3O2 cathode material
作者:
陈鹏ab钟盛文ab梅文捷ab刘熙林ab金柱ab胡经纬ab
江西理工大学, a.材料科学与工程学院;b.江西省动力电池及其材料重点实验室,江西 赣州 341000
Author(s):
CHEN Pengab ZHONG Shengwenab MEI Wenjieaab LIU Xilinaab JIN Zhuab HU Jingweiab
a. School of Materials Science and Engineering; b. Jiangxi Key Laboratory of Power Battery and Materials,Jiangxi University of Science and Technology,Ganzhou 341000,China
关键词:
气氛LiNi0.7Mn0.3O2无钴共沉淀锂离子电池
分类号:
TF124.5;TG146.1
DOI:
10.13264/j.cnki.ysjskx.2015.04.011
文献标志码:
A
摘要:
采用共沉淀-高温固相法,控制烧结气氛制备出LiNi0.7Mn0.3O2.借助扫描电子显微镜(SEM)、X射线衍射分析(XRD)、氧气分析仪、电池测试系统及电化学工作站对不同气氛条件下制备的LiNi0.7Mn0.3O2进行结构、形貌、固相反应过程氧气浓度变化、电性能和内阻的表征.研究结果表明,烧结过程存在2次明显吸氧阶段且全程通高纯氧制备的材料有更好的球形度,层状结构更完整,充放电性能及循环稳定性都更好,内阻也较小;在2.75~4.35 V电压范围内,以0.2 C进行充放电,其首次放电比容量高达191.0 mAh/g, 70周循环后容量保持率为95.2 %.烧结过程中由一种气氛切换为另一种气氛比烧结全程不通气或通空气所制备材料的性能差,但其首次比容量都低于184.0 mAh/g,70周循环后的容量保持率也都不足85.0 %.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2015-03-13基金项目:国家自然科学基金资助项目(51372104)作者简介:陈鹏(1988- ),男,硕士研究生,主要从事锂离子电池及其材料方面的研究,E-mail:chenpeng05@126.com.通信作者:钟盛文(1963- ),男,教授,主要从事锂离子电池及其材料方面的研究,E-mail:zhongshw@126.com.
更新日期/Last Update: 2015-08-30