| Mn_3O_4合成锂离子电池正极材料LiNi_(0.5)Mn_(1.5)O_4 |
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| 引用本文： | 李士霞,韦华,吕小艳,文衍宣,粟海锋,王凡. Mn_3O_4合成锂离子电池正极材料LiNi_(0.5)Mn_(1.5)O_4[J]. 电源技术, 2010, 34(2) |
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| 作者姓名： | 李士霞 韦华 吕小艳 文衍宣 粟海锋 王凡 |
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| 作者单位： | 广西大学化学化工学院,广西,南宁,530004;广西大学教务处,广西,南宁,530004 |
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| 摘 要： | 以Mn3O4为原料,在氧气气氛中用固相反应法制备尖晶石结构正极材料LiNi0.5Mn1.5O4,并用X射线衍射(XRD)、扫描电镜(SEM)和恒流充放电测试考察了反应温度、反应时间和锂用量等工艺条件对合成产物的结构、微观形貌和电化学性能的影响。结果表明通过控制工艺条件可以优化材料的电化学性能,其中锂用量为1.02,在900℃反应2h所合成LiNi0.5Mn1.5O4具有Fd3m尖晶石结构,放电比容量为140mAh/g、40次循环后容量保持率为94.8%。
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| 关 键 词： | 锂离子电池 正极材料 LiNi_(0.5)Mn_(0.5)O_4 四氧化三锰 |
LiNi_(0.5)Mn_(1.5)O_4 cathode material synthesized by Mn_3O_4 |
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| LI Shi-xia,WEI Hua,LV Xiao-yan,WEN Yan-xuan,SU Hai-feng,WANG Fan. LiNi_(0.5)Mn_(1.5)O_4 cathode material synthesized by Mn_3O_4[J]. Chinese Journal of Power Sources, 2010, 34(2) |
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| Authors: | LI Shi-xia WEI Hua LV Xiao-yan WEN Yan-xuan SU Hai-feng WANG Fan |
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| Affiliation: | 1. School of Chemistry and Chemical Engineering;Guangxi University;Nanning Guangxi 530004;China;2. Educational Administration Department;China |
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| Abstract: | LiNi0.5Mn1.5O4 powder was synthesized by solid state reaction method using Mn3O4 as raw material in O2. The effects of reaction temperature, reaction time and lithium amount on the physical properties and electrochemical performance of the samples were investigated by powder X-ray diffraction (XRD), scanning electron microscopy (SEM) and galvanostatic charge-discharge test in detail. The electrochemical property of LiNi0.5Mn1.5O4 was optimized by controlling the synthesis conditions. It is found that after ... |
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| Keywords: | lithium ion batteries cathode materials LiNi0.5Mn0.5O4 Mn3O4 |
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