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[1]陈云超,余勇,王国静,等.微通道反应器-固相法制备锂离子电池正极材料LiMnPO4/C[J].南京工业大学学报(自然科学版),2017,39(03):16-20.[doi:10.3969/j.issn.1671-7627.2017.03.004]
 CHEN Yunchao,YU Yong,WANG Guojing,et al.Preparation of LiMnPO4/C cathode material for lithium ion batteries by a microreactor-solid state process[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2017,39(03):16-20.[doi:10.3969/j.issn.1671-7627.2017.03.004]
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微通道反应器-固相法制备锂离子电池正极材料LiMnPO4/C()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
39
期数:
2017年03期
页码:
16-20
栏目:
出版日期:
2017-05-20

文章信息/Info

Title:
Preparation of LiMnPO4/C cathode material for lithium ion batteries by a microreactor-solid state process
文章编号:
1671-7627(2017)03-0016-05
作者:
陈云超余勇王国静刘晓敏杨晖
南京工业大学 材料科学与工程学院,江苏 南京 210009
Author(s):
CHEN YunchaoYU YongWANG GuojingLIU XiaominYANG Hui
College of Materials Science and Engineering,Nanjing Tech University,Nanjing 210009,China
关键词:
微通道反应器 固相法 Mn3(PO4)2·3H2O LiMnPO4 碳包覆
Keywords:
microreactor solid state process Mn3(PO4)2·3H2O LiMnPO4 carbon coating
分类号:
TM911
DOI:
10.3969/j.issn.1671-7627.2017.03.004
文献标志码:
A
摘要:
采用微通道反应器-固相烧结法制备纳米级磷酸锰锂(LiMnPO4)正极材料。通过微反应器将反应溶液快速混合,得到了颗粒较小的前驱体产物Mn3(PO4)2·3H2O,通过与锂源、碳源球磨混合,固相烧结得到最终产物LiMnPO4/C。通过X线衍射仪(XRD)、场发射扫描电子显微镜(FESEM)、透射电子显微镜(TEM)以及恒电流充放电对样品进行表征和电化学性能测试,考察不同煅烧温度对LiMnPO4/C的颗粒尺寸及电化学性能的影响。结果表明:在650 ℃条件下制备出的样品具有最小的颗粒尺寸以及最佳的电化学性能,在0.05C(1C=171 mA·h/g)倍率下的首次放电比容量为121 mA·h/g,经20次循环后容量保持率为86.8%。
Abstract:
Nano-sized LiMnPO4 cathode material was prepared by a microreactor-solid state method.The Mn3(PO4)2·3H2O particles,obtained by mixing two reactant solutions rapidly in a microreactor,were ball-milled with lithium and carbon sources to prepare the precursors,and the mixture was sintered under high temperatures to obtain the product LiMnPO4/C.The effects of various calcination temperatures on the particle size and electrochemical performance of LiMnPO4/C were characterized by X-ray diffraction(XRD),field emission scanning electron microscope(FESEM),transmission electron microscopy(TEM)and galvanostatic charge-discharge test.Results showed that the LiMnPO4/C calcined at 650 ℃ exhibited the smallest particle size and the best electrochemical performance.The initial discharge capacity of this sample was 121 mA·h/g at 0.05C rate(1C=171 mA·h/g),which kept the capacity retention ratio of 86.8% after 20 cycles.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2016-01-07
基金项目:国家自然科学基金(21573109,21206069); 江苏省自然科学基金重点项目(BK2011030); 江苏高校优势学科建设工程
作者简介:陈云超(1991—),男,江苏张家港人,硕士,主要研究方向为锂离子电池正极材料; 杨晖(联系人),教授,E-mail:yanghui@njtech.edu.cn.
引用本文:陈云超,余勇,王国静,等.微通道反应器-固相法制备锂离子电池正极材料LiMnPO4/C[J].南京工业大学学报(自然科学版),2017,39(3):16-20..
更新日期/Last Update: 2017-05-31