Mn₃O₄ nanocrystals anchored on multi-walled carbon nanotubes as high-performance anode materials for lithium-ion batteries

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• 作者：Zhao-Hui Wang ; Li-Xia Yuan ; Qing-Guo Shao ; Fei Huang ; Yun-Hui Huang ; ^{huangyh@mail.hust.edu.cn}
• 关键词：Nanocomposites ; Carbon nanotubes ; Energy storage and conversion ; Mn3O4 ; Anode ; Lithium-ion battery
• 刊名：Materials Letters
• 出版年：2012
• 期刊代码：59_0167577x
• 类别：ms
• 出版时间：1 August, 2012
• 卷：80
• 期：Complete
• 页码：110-113
• 文件大小：690 K

摘要

Mn₃O₄ nanocomposite with multi-walled carbon nanotubes (MWCNTs) has been successfully fabricated via a simple solvothermal route assisted by sodium acetate. Mn₃O₄ nanocrystals are uniformly anchored on MWCNTs. As anode material for lithium-ion batteries, the nanocomposite exhibits excellent cycling stability and rate capability. It delivers an initial reversible capacity of 1380 mAh g^鈭?#xA0;1 at a current density of 100 mA g^鈭?#xA0;1, and retains the capacity to 592 mAh g^鈭?#xA0;1 after 50 cycles. Even at 1000 mA g^鈭?#xA0;1, the capacity is still 387 mAh g^鈭?#xA0;1 after 35 cycles. The superior performance is ascribed to the unique architecture with short diffusion length for lithium ions and effective conductive network for electron transport.