S-Doped N-Rich Carbon Nanosheets with Expanded Interlayer Distance as Anode Materials for Sodium-Ion Batteries

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• 作者：Jiqian Yang ; Xianlong Zhou ; Dihua Wu ; Xudong Zhao and Zhen Zhou
• 刊名：Advanced Materials
• 出版年：2017
• 出版时间：February 10, 2017
• 年：2017
• 卷：29
• 期：6
• 全文大小：1532K
• ISSN：1521-4095

文摘

2D composites with S doping into N-rich carbon nanosheets are fabricated, whose interlayer distance becomes large enough for Na⁺ insertion and diffusion. The large surface area and stable structure also provide more sites for Na⁺ adsorption, leading to high Na-storage capacity and excellent rate performance. Moreover, Faradaic reactions between Na⁺ and tightly bound S is beneficial for further improvement of Na-storage capacity.