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Improving the electrochemical performance of LiMn_2O_4/graphite batteries using LiF additive during fabrication 被引量：6

Improving the electrochemical performance of LiMn_2O_4/graphite batteries using LiF additive during fabrication
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摘要 LiMn2O4/graphite batteries using LiF additive were fabricated and their electrochemical performance including discharge, cycling and storage performances were tested and compared with LiF-free LiMnEO4/graphite batteries. The LiMnEO4/graphite battery with LiF added shows better capacity （107.5 mAh/g）, cycling performance （capacity retention ratio of 93% after 100 cycles）, and capacity recovery ratio （98.1%） than the LiF-free battery. The improvement in electrochemical performance of the LiF-added LiMnEO4/graphite battery was due to the fact that LiF can restrain the dissolution of Mn from the spinel LiMn2O4 cathode into the electrolyte, leading to a smaller resistance and polariza- tion. LiMn2O4/graphite batteries using LiF additive were fabricated and their electrochemical performance including discharge, cycling and storage performances were tested and compared with LiF-free LiMnEO4/graphite batteries. The LiMnEO4/graphite battery with LiF added shows better capacity （107.5 mAh/g）, cycling performance （capacity retention ratio of 93% after 100 cycles）, and capacity recovery ratio （98.1%） than the LiF-free battery. The improvement in electrochemical performance of the LiF-added LiMnEO4/graphite battery was due to the fact that LiF can restrain the dissolution of Mn from the spinel LiMn2O4 cathode into the electrolyte, leading to a smaller resistance and polariza- tion.
作者 LIU Yunjian GUO Huajun LI Xinhai WANG Zhixing
机构地区 School of Material Science and Engineering School of Metallurgical Science and Engineering
出处 《Rare Metals》 SCIE EI CAS CSCD 2011年第2期120-125,共6页 稀有金属（英文版）
基金 supported by the Advanced Person Fund of Jiangsu University (No. 10JDG041) the Major State Basic Research Development Program of China(No. 2007CB613607)
关键词 lithium batteries lithium fluoride ADDITIVES electrochemical properties lithium batteries lithium fluoride additives electrochemical properties
分类号 TM911.14 [电气工程—电力电子与电力传动] TG139.7 [一般工业技术—材料科学与工程]
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参考文献5

二级参考文献29

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共引文献16

同被引文献74

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引证文献6

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Rare Metals
2011年 第2期

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