Synthesis and electrochemical properties of Li₂ZnTi₃O₈ fibers as an anode material for lithium-ion batteries

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• 作者：Li Wang^a ; Lijuan Wu^a ; Zhaohui Li^a ; Gangtie Lei^a ; Qizhen xiao^a ; ^b ; ^{qizhenxiao2004@yahoo.com.cn"" rel=""nofollow} ; Ping Zhang^b ;
• 关键词：Electrospinning ; Fibers ; Anode ; Lithium-ion batteries
• 刊名：Electrochimica Acta
• 出版年：2011
• 出版时间：1 June 2011
• 年：2011
• 卷：56
• 期：15
• 页码：5343-5346
• 全文大小：686 K

文摘

Li₂ZnTi₃O₈ fibers are synthesized by thermally treating electrospun Zn(CH₃COO)₂/LiOAc/TBT/PVP fibers and utilized as an energy storage material for rechargeable lithium-ion batteries. The material is characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and thermal analysis. Scanning electron microscopy results show that the Li₂ZnTi₃O₈ fibers have an average diameter of 200 nm. Electrochemical properties of the material are evaluated using cyclic voltammetry, galvanostatic cycling and electrochemical impedance spectroscopy. The results show that as-prepared Li₂ZnTi₃O₈ has a high specific discharge capacity of 227.6 mAh g⁻¹ at the 2nd cycle. Its electrochemical performance at subsequent cycles shows good cycling capacity and rate capability. The obtained results thus strongly support that the electrospinning method is an effective method to prepare Li₂ZnTi₃O₈ anode material with higher capacity and rate capability.