Nitrogen-Doped Mesoporous Carbon-Encapsulated MoO₂ Nanobelts as a High-Capacity and Stable Host for Lithium-Ion Storage

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• 作者：Dr. Xianjun Tan ; Chuanfeng Cui ; Shiqun Wu ; Dr. Bocheng Qiu ; Prof. Lingzhi Wang and Prof. Jinlong Zhang
• 刊名：Chemistry – An Asian Journal
• 出版年：2017
• 出版时间：January 3, 2017
• 年：2017
• 卷：12
• 期：1
• 页码：36-40
• 全文大小：1101K
• ISSN：1861-471X

文摘

N-doped mesoporous carbon-capped MoO₂ nanobelts (designated as MoO₂@NC) were synthesized and applied to lithium-ion storage. Owing to the stable core–shell structural framework and conductive mesoporous carbon matrix, the as-prepared MoO₂@NC shows a high specific capacity of around 700 mA h g⁻¹ at a current of 0.5 A g⁻¹, excellent cycling stability up to 100 cycles, and superior rate performance. The N-doped mesoporous carbon can greatly improve the conductivity and provide uninhibited conducting pathways for fast charge transfer and transport. Moreover, the core–shell structure improved the structural integrity, leading to a high stability during the cycling process. All of these merits make the MoO₂@NC to be a suitable and promising material for lithium ion battery.