一步固相法制备高性能Li<sub>2</sub>MnSiO<sub>4</sub>/C锂离子电池正极材料

赖春艳; 吴婷婷; 张春瑶; 杨波; 李世成

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DOI:10.3969/j.issn.1006-4729.2016.04.003

Journal of ShangHai University of Electric Power :2016,32(4):319-321,338

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一步固相法制备高性能Li₂MnSiO₄/C锂离子电池正极材料

赖春艳, 吴婷婷, 张春瑶, 杨波, 李世成

(上海电力学院环境与化学工程学院)

Enhanced Electrochemical Performance Li₂MnSiO₄/C Cathode Material Synthesized by One Step Solid State Method

LAI Chunyan, WU Tingting, ZHANG Chunyao, YANG Bo, LI Shicheng

(School of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China)

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Received:September 30, 2015

中文摘要: 采用一步固相法合成了Li₂MnSiO₄/C正极材料，利用XRD，EIS和循环伏安测试对该材料进行了结构和电化学性能表征.研究了一步固相法中添加不同比例的葡萄糖对Li₂MnSiO₄材料性能的影响.结果表明：葡萄糖作碳源复合可以提高Li₂MnSiO₄正极材料的充放电比容量和循环性能，同时在一步固相合成法中还能细化Li₂MnSiO₄正极材料颗粒.葡萄糖添加量为6%时，制备得到的Li₂MnSiO₄/C正极材料首次可逆放电比容量为213.1 mAh/g.

中文关键词: 锂离子电池 Li₂MnSiO₄正极材料葡萄糖碳复合

Abstract:Li₂MnSiO₄/C cathode material is synthesized through one step solid state method.XRD,EIS and cyclic voltammetry measurment are used to analyze the structure and electrochemical performance of Li₂MnSiO₄/C cathode material.The effect of different glucose adding ratio on the electrochemical properties of Li₂MnSiO₄ is researched.The results show that the glucose adding improves the electrochemical performance as well as reduces the particle of Li₂MnSiO₄ cathode material.The Li₂MnSiO₄/C with 6% glucose adding shows a discharge capacity of 213.1 mAh/g at 0.05C,much higher than the pure Li₂MnSiO₄ cathode materials.

keywords: lithiumion battery Li₂MnSiO₄ cathode material glucose carbon composite

文章编号：20160403 中图分类号： 文献标志码：

基金项目:国家自然科学基金（51402187）；上海市科学技术委员会课题（14DZ2261000）.

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Author Name	Affiliation	E-mail
LAI Chunyan	School of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China	laichunyan@shiep.edu.cn
WU Tingting	School of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
ZHANG Chunyao	School of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
YANG Bo	School of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
LI Shicheng	School of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China