纳米片
阳极
材料科学
多孔性
碳纤维
兴奋剂
化学工程
离子
纳米技术
钠
扩散
电极
光电子学
化学
复合材料
复合数
冶金
有机化学
工程类
物理
物理化学
热力学
作者
Lei Zou,Yanqing Lai,Hongxing Hu,Mengran Wang,Kai Zhang,Peng Zhang,Jing Fang,Jie Li
标识
DOI:10.1002/chem.201702182
摘要
Abstract A facile and scalable method is realized for the in situ synthesis of N/S co‐doped 3 D porous carbon nanosheet networks (NSPCNNs) as anode materials for sodium‐ion batteries. During the synthesis, NaCl is used as a template to prepare porous carbon nanosheet networks. In the resultant architecture, the unique 3 D porous architecture ensures a large specific surface area and fast diffusion paths of both electrons and ions. In addition, the import of N/S produces abundant defects, increased interlayer spacings, more active sites, and high electronic conductivity. The obtained products deliver a high specific capacity and excellent long‐term cycling performance, specifically, a capacity of 336.2 mA h g −1 at 0.05 A g −1 , remaining as large as 214.9 mA h g −1 after 2000 charge/discharge cycles at 0.5 A g −1 . This material has great prospects for future applications of scalable, low‐cost, and environmentally friendly sodium‐ion batteries.
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