Fabrication and electrochemical characteristics of electrospun LiMn₂O₄ nanofiber cathode for Li-ion batteries

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• 作者：Hongwei Zhou ; Xianan Ding ; Zhuang Yin ; Guofeng Xu ; Qingrui Xue ; Jianling Li ; Shuqiang Jiao ; Xindong Wang
• 关键词：Lithium-ion batteries ; Cathode ; Electrospinning ; Nanofibers ; Sol&ndash ; gel preparation ; Energy storage and conversion
• 刊名：Materials Letters
• 出版年：15 February, 2014
• 年：2014
• 卷：117
• 期：Complete
• 页码：175-178
• 全文大小：1114 K

文摘

The LiMn₂O₄ nanofiber cathode was synthesized by electrospinning. It forms porous 鈥渘etwork-like鈥?morphology with 150 nm in diameter and ~20 碌m in length. For comparison, LiMn₂O₄ nanoparticle cathode was synthesized by the sol-gel thermolysis process. The nanofiber cathode processes superior cycling stability and rate capacity. The AC impedance results show that the nanofiber cathode has much lower degradation, probably due to the suppressed Mn³⁺ disproportionation process.