Improving the electrochemical performance of LiMn2O4/graphite batteries using LiF additive during fabrication
来源期刊：Rare Metals2011年第2期
论文作者：LIU Yunjian a,b,GUO Huajun b,LI Xinhai b,and WANG Zhixing b a School of Material Science and Engineering,Jiangsu University,Zhenjiang ,China b School of Metallurgical Science and Engineering,Central South University,Changsha ,China
文章页码：120 - 125
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 LiMn2O4/graphite batteries.The LiMn2O4/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 LiMn2O4/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 polarization.
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 LiMn2O4/graphite batteries.The LiMn2O4/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 LiMn2O4/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 polarization.
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