Porous Fe₂O₃ nanotubes as advanced anode for high performance lithium ion batteries

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• 作者：Mingchen Sun ; Mengfei Sun ; Hongxun Yang ; ^{yhongxun@126.com" class="auth_mail" title="E-mail the corresponding author} ; Wanghua Song ; Yu Nie ; Shengnan Sun
• 关键词：Fe2O3 ; Nanotube ; Anode ; High performance ; Lithium ion batteries
• 刊名：Ceramics International
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：43
• 期：1
• 页码：363-367
• 全文大小：755 K

文摘

One-dimensional porous Fe₂O₃ nanotubes with 2 µm length, 220 nm outer diameter and 65 nm wall thickness were firstly synthesized via a low temperature hydrothermal method followed by thermal treatment. As advanced anode for lithium ion batteries, porous Fe₂O₃ nanotubes exhibit obviously enhanced electrochemical properties in terms of lithium storage capacity (1050.1 mA h g⁻¹ at 100 mA g⁻¹ rate), initial coulombic efficiency (78.4%), cycle performances (90.6% capacity retention at 50th cycle), and rate capability (613.7 mA h g⁻¹ at 1000 mA g⁻¹ rate). This enhancement could be attributed to the one-dimensional nanostructure of porous Fe₂O₃ nanotubes which could increase contact area between electrolyte and active materials, shorten migration path for Li⁺ ions and electrons, and accommodate the volume variations via additional void space during cycling.