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[1]王国静,陈云超,梁凯,等.微反应器辅助合成磷酸锰铁锂正极材料[J].南京工业大学学报(自然科学版),2018,40(03):1-5.[doi:10.3969/j.issn.1671-7627.2018.03.001]
 WANG Guojing,CHEN Yunchao,LIANG Kai,et al.Lithium iron manganese phosphate cathode from the precursors precipitated via a micro-reactor method[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2018,40(03):1-5.[doi:10.3969/j.issn.1671-7627.2018.03.001]
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微反应器辅助合成磷酸锰铁锂正极材料()
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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:
40
期数:
2018年03期
页码:
1-5
栏目:
出版日期:
2018-05-20

文章信息/Info

Title:
Lithium iron manganese phosphate cathode from the precursors precipitated via a micro-reactor method
文章编号:
1671-7627(2018)03-0001-05
作者:
王国静陈云超梁凯马帅张小溪杨晖
南京工业大学 材料科学与工程学院,江苏 南京 210009
Author(s):
WANG GuojingCHEN YunchaoLIANG KaiMA ShuaiZHANG XiaoxiYANG Hui
College of Materials Science and Engineering,Nanjing Tech University,Nanjing 210009,China
关键词:
锂离子电池 微反应器 橄榄石正极材料 磷酸锰铁锂 磷酸盐
Keywords:
lithiumionbattery micro-reactor olivinecathodes LiFex0.5Mn0.5PO4 phosphate
分类号:
TM912.9
DOI:
10.3969/j.issn.1671-7627.2018.03.001
文献标志码:
A
摘要:
采用微反应器法制备前驱体Fe3(PO4)2·8H2O和Mn3(PO4)2·3H2O磷酸盐材料,并通过固相法制备含C的磷酸铁锂LiFePO4/C(LFP/C)、磷酸锰锂LiMnPO4/C(LMP/C)和磷酸锰铁锂LiFe0.5Mn0.5PO4/C(LFMP/C)以及不含C的磷酸锰铁锂LiFe0.5Mn0.5PO4(LFMP)4种正极材料。分别采用X线衍射仪(XRD)、拉曼光谱仪(Raman)、扫描电子显微镜(SEM)和电化学测试系统进行样品结构、形貌和电化学性能的表征。结果表明:通过微反应器法控制pH可获得颗粒细小、均匀的纳米磷酸盐前驱体,LFMP/C拥有最高的首次放电比能量526.12 W·h/kg,且放电比容量达146.82 mA·h/g,50次循环后容量保持率达94%,电化学性能优异。
Abstract:
The precursor Fe3(PO4)2·8H2O and Mn3(PO4)2·3H2O particles were synthesized via a micro-reactor.The cathode materials LiFe0.5Mn0.5PO4(LFMP)and carbon-coated LiFePO4/C(LFP/C),LiMnPO4/C(LMP/C)and LiFe0.5Mn0.5PO4/C(LFMP/C)were prepared via a solid-state process.Samples were analyzed by X-ray diffraction(XRD),Raman spectra,scanning electron microscope(SEM)and electrochemical tests.Results showed that micro-reactor method with the control of pH value could obtain nano-sized phosphate precursor with uniform size.Among all the four obtained olivine cathode materials,LiFe0.5Mn0.5PO4/C delivered the highest energy density of 526.12 W·h/kg and the capacities of 146.82 mA·h/g in the first cycle,and remained 94% capacity retention after 50 cycles.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2016-09-12
基金项目:国家自然科学基金(21573109)
作者简介:王国静(1991—),女,甘肃白银人,硕士,主要研究方向为锂离子电池; 杨晖(联系人),教授,E-mail:yanghui@njtech.edu.cn.
引用本文:王国静,陈云超,梁凯,等.微反应器辅助合成磷酸锰铁锂正极材料[J].南京工业大学学报(自然科学版),2018,40(3):1-5..
更新日期/Last Update: 2018-05-31