期刊
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
卷 29, 期 21, 页码 18179-18186出版社
SPRINGER
DOI: 10.1007/s10854-018-9930-2
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资金
- National Natural Science Foundation of China (NFSC) [51364024, 51404124]
- Natural Science Foundation of Gansu Province [1506RJZA100]
- Foundation for Innovation Groups of Basic Research in Gansu Province [1606RJIA322]
Nitrogen-sulfur co-doped porous carbon (NSPC) were prepared by using ionic liquids as both nitrogen and sulfur source. The as-obtained NSPC exhibits open pore structure with thin carbon walls and nitrogen (2.32wt%) and sulfur (0.91wt%) doping. When used as lithium-ion batteries (LIBs), NSPC shows a high reversible capacity of 821mAhg(-1) at 0.1Ag(-1) after 50 cycles. Even after 1000 cycles, the NSPC exhibits a stable reversible capacity of 533mAhg(-1) at current density of 1.5Ag(-1). The excellent electrochemical performance of NSPC is attributed to two points: (1) interconnected three-dimensional pore structure; (2) Nitrogen and sulfur doping and the synergic effect of dual-doping heteroatoms. This work provides new ideas for the development of new anode materials for LIBs.
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