锂(药物)
化学工程
纳米纤维
阴极
锰
电解质
锂离子电池
电极
法拉第效率
聚丙烯腈
电池(电)
阳极
作者
Li Liu,Taeseup Song,Hyungkyu Han,Hyunjung Park,Juan Xiang,Zhiming Liu,Yi Feng,Ungyu Paik
摘要
Porous LiMnPO4/C composite nanofibers between 150 and 250 nm have been synthesized as a cathode material for lithium ion batteries via electrospinning. The porous LiMnPO4/C composite nanofibers show excellent electrochemical performance including a high reversible capacity of 112.7 mA h g−1 at 0.2C, a stable cycle retention of 95% after 100 cycles at 1C, and excellent rate capability (73.1 mA h g−1 at 5C) in constant current mode between 2.0 and 4.5 V. These improved electrochemical properties are attributed to the one-dimensional geometry and porous structure, which significantly enhanced kinetics associated with electrons and Li ions.
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