Preparation of Nitrogen-Doped Carbon Spheres by Injecting Pyrolysis of Pyridine

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• 作者：Bin Cao ; Huan Liu ; Zhou Xing ; Yaofei Lei ; Huaihe Song ; Xiaohong Chen ; Jisheng Zhou ; Zhaokun Ma
• 刊名：ACS Sustainable Chemistry & Engineering
• 出版年：2015
• 出版时间：August 3, 2015
• 年：2015
• 卷：3
• 期：8
• 页码：1786-1793
• 全文大小：614K
• ISSN：2168-0485

文摘

Nitrogen-doped carbon spheres (NDCS) with average diameter of 1.05 to 2.68 渭m were synthesized by a simple and eco-friendly injecting pyrolysis using pyridine as the carbon precursor. The results indicated that both the pyrolysis temperature and injecting rate play important roles in controlling the morphology of NDCS. Because of the microstructure of concentric incompletely closed graphitic shells improving the thermal stability of nitrogen functionalities, the evolution of nitrogen functionalities in NDCS was much different from other nitrogen-doped carbon materials. The formation mechanism of NDCS was discussed and deduced. When NDCS were utilized as the anode material for lithium-ion batteries, they show high-rate performance and good cyclability, suggesting the advantages of injecting pyrolysis for large-scale generating anode material in power Li-ion batteries.