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[1]朱华君,杨晖,沈晓冬.固相法制备Li+电池正极材料LiMnPO4[J].南京工业大学学报(自然科学版),2014,36(04):39-44.[doi:10.3969/j.issn.1671-7627.2014.04.008]
 ZHU Huajun,YANG Hui,SHEN Xiaodong.Synthesis and performance of LiMnPO4 cathode material for lithium ion batteries by solid state method[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2014,36(04):39-44.[doi:10.3969/j.issn.1671-7627.2014.04.008]
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固相法制备Li+电池正极材料LiMnPO4()
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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:
36
期数:
2014年04期
页码:
39-44
栏目:
出版日期:
2014-07-01

文章信息/Info

Title:
Synthesis and performance of LiMnPO4 cathode material for lithium ion batteries by solid state method
文章编号:
1671-7627(2014)04-0039-06
作者:
朱华君杨晖沈晓冬
南京工业大学 材料科学与工程学院,江苏 南京 210009
Author(s):
ZHU HuajunYANG HuiSHEN Xiaodong
College of Materials Science and Engineering,Nanjing Tech University,Nanjing 210009,China
关键词:
Li+电池 LiMnPO4 固相法
Keywords:
lithium ion batteries LiMnPO4 solid state method
分类号:
TM911
DOI:
10.3969/j.issn.1671-7627.2014.04.008
文献标志码:
A
摘要:
采用固相法制备橄榄石型磷酸锰锂(LiMnPO4)正极材料。通过热分析仪(TG-DSC)及X线衍射仪(XRD)对球磨产物前驱体进行分析,通过XRD、场发射扫描电子显微镜(FESEM)及恒电流充放电等测试手段,考察不同煅烧温度及保温时间对LiMnPO4的物相结构、形貌及电化学性能的影响。结果表明:前驱体合理的煅烧温度范围为475~625 ℃。在475 ℃下保温10 h得到纯相LiMnPO4颗粒,其在0.05 C下的放电容量为95.7 mA·h/g。
Abstract:
Olivine structure of LiMnPO4was synthesized by a solid state method.The precursor obtained after ball milling was characterized by thermogravimetric analysis-differential scanning calorimetry(TG-DSC)and X-ray diffraction(XRD).The effects of calcining temperature and time on the structure,morphology and electrochemical performance of LiMnPO4were characterized by XRD,field-emission scanning electron microscope(FESEM)and galvanostatic charge-discharge analyses.Results showed that the appropriate calcining temperatures of the precursor were between 475 ℃ and 625 ℃.The sample calcined at 475 ℃ for 10 h presented a single phase of LiMnPO4 and possessed good electrochemical performance.And the discharge capacity of the sample reached 95.7 mA·h/g at the rate of 0.05 C.

参考文献/References:

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[9] Kim J,Park Y U,Seo D H,et al.Mg and Fe Co-doped Mn based olivine cathode material for high power capability [J].Journal of Electrochemical Society,2011,158:A250-A254.
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备注/Memo

备注/Memo:
收稿日期:2013-12-04
基金项目:江苏省基础研究计划重点研究专项(BK2011030); 江苏省普通高校研究生科研创新计划(CXLX13_406)
作者简介:朱华君(1986—),女,江苏苏州人,博士生,主要研究方向为Li+电池正极材料; 杨晖(联系人),教授,E-mail: yanghui@njtech.edu.cn..
更新日期/Last Update: 2014-07-31