Core–shell-structured hollow carbon nanofiber@nitrogen-doped porous carbon composite materials as anodes for advanced sodium-ion batteries

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• 作者：Yaohui Qu ; Yimin Deng ; Qiang Li ; Zhian Zhang ; Fanyan Zeng…
• 刊名：Journal of Materials Science
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：52
• 期：4
• 页码：2356-2365
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Materials Science, general; Characterization and Evaluation of Materials; Polymer Sciences; Continuum Mechanics and Mechanics of Materials; Crystallography and Scattering Methods; Classical Mechanics;
• 出版者：Springer US
• ISSN：1573-4803
• 卷排序：52

文摘

Core–shell-structured hollow carbon nanofiber@nitrogen-doped porous carbon (HCNF@NPC) composite materials were prepared by carbonization of HCNF@polyaniline. The HCNF@NPC composite materials are applied to the anode for sodium-ion batteries, showing a superior reversible discharge capacity of 182 mAh g−1 after 200 cycles at 50 mA g−1. Moreover, excellent long-term cycling stability (>2500 cycles) is also obtained even at 500 mA g−1. The results indicate that the HCNF@NPC composite electrode shows outstanding electrochemical performance. The excellent performance of HCNF@NPC composite electrode may attribute to the synergetic effect between HCNF core and NPC shell layer, and the HCNF core can provide a firm hollow carbon matrix to stabilize the electrode structure, and the NPC shell layer can improve the capacity effectively.