Nitrogen-sulfur co-doped porous carbon prepared using ionic liquids as a dual heteroatom source and their application for Li-ion batteries

作者：Du, Mengqi; Meng, Yanshuang; Duan, Chaoyu; Wang, Chen; Zhu, Fuliang^*; Zhang, Yue^*

来源：Journal of Materials Science: Materials in Electronics , 2018, 29(21): 18179-18186.

DOI：10.1007/s10854-018-9930-2

• OXYGEN REDUCTION REACTION
• PERFORMANCE ANODE MATERIALS
• HIGH-CAPACITY
• ORIENTED GRAPHENE
• RATE CAPABILITY
• LITHIUM
• STORAGE
• SUPERCAPACITORS
• MICROSPHERES
• NANOFIBERS

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.

• 出版日期2018-11
• 单位兰州理工大学