Properties and Structure of Spinel Li‐Mn‐O‐F Compounds for Cathode Materials of Secondary Lithium‐ion Battery
作者： Zhao-Yang Chen , Li-Zhen Gao , Xin-Quan Liu , Zuo-Long Yu
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摘要: The spinel Li-Mn-O-F compound cathode materials were synthesized by solid-state reaction from calculated amounts LiOH-H2O, MnO2(EMD) and LiF. results of the electrochemical test demonstrated that these exhibited excellent properties. It's initial capacity is - 115 mAh.g1 reversible efficiency about 100%. After 60 cycles, its still around 110 with nearly 100% efficiency. possibly has two structure models: interstitial model [Li]-[Mn3+xMn4+2-x]O4Fδ, in which fluorine located on interstice crystal lattice, substituted [Li]-[Mn3+xMn4+2-x]O4-δFδ, atom oxygen atom. result supports [Li][Mn3+xMn4+2-x]O4Fδ.
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