期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 23, 期 57, 页码 14261-14266出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201702182
关键词
anodes; doping; electrochemistry; mesoporous materials; sodium-ion batteries
资金
- National Natural Science Foundation of China [51574288, 51404304]
- China Postdoctoral Science Foundation [2015M572266, 2015M570686]
- Engineering Research Center of Advanced Battery Materials, the Ministry of Education, China
A facile and scalable method is realized for the insitu synthesis of N/S co-doped 3D 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 3D 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 336.2mAhg(-1) at 0.05Ag(-1), remaining as large as 214.9mAhg(-1) after 2000 charge/discharge cycles at 0.5Ag(-1). This material has great prospects for future applications of scalable, low-cost, and environmentally friendly sodium-ion batteries.
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