期刊
ACS APPLIED MATERIALS & INTERFACES
卷 11, 期 3, 页码 2608-2617出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b01823
关键词
controllable nitrogen doping; pyridine graphdiyne; pyrimidine graphdiyne; theoretical prediction; excellent electrochemical performance
资金
- Hundred Talents Program of the Chinese Academy of Sciences
- Frontier Science Research Project of the Chinese Academy of Sciences [QYZDB-SSW-JSC052]
- Natural Science Foundation of Shandong Province (China) for Distinguished Young Scholars [JQ201610]
- National Natural Science Foundation of China [21790051, 21790050, 21771187, 21701182]
The qualitative and quantitative nitrogen doping strategy for carbon materials is reported here. Novel porous nanocarbon networks pyrimidine-graphdiyne (PM-GDY) and pyridine-graphdiyne (PY-GDY) films with large areas were successfully prepared. These films are self supported, uniform, continuous, flexible, transparent, and quantitively doped with merely pyridine-like nitrogen (N) atoms through the facile chemical synthesis route. Theoretical predictions imply these N doped carbonaceous materials are much favorable for storing lithium (Li)-ions since the pyridinic N can enhance the interrelated binding energy. As predicted, PY-GDY and PM-GDY display excellent electrochemical performance as anode materials of LIBs, such as the superior rate capability, the high capacity of 1168 (1165) mA h g(-1) at current density of 100 mA g(-1) for PY-GDY (PM-GDY), and the excellent stability of cycling for 1500 (4000) cycles at 5000 mA g(-1) PY-GDY (PM-GDY).
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