A Simple Synthesis of Nitrogen-Sulfur Co-Doped Porous Carbon Using Ionic Liquids as Dopant for High Rate Performance Li-Ion Batteries
Journal of Electroanalytical Chemistry
A novel nitrogen‑sulfur co-doped porous carbon (NSPC) material was synthesized by using ionic liquids as the nitrogen and sulfur precursor. This material exhibited porous structure with high specific surface area (701 m2 g−1) and superior nitrogen and sulfur co-doping (4.66 and 1.83 wt%, respectively), The materials was used as anode materials for Lithium-ion batteries and showed a high reversible capacity of 987.7 mAh g−1 at a current density of 0.1 A g−1 and a good long cycle performance (337.5 mAh g−1 at 5 A g−1 after 5000 cycles). The NSPC's superior electrochemical performance can be attributed to three points: (1) Excellent pore structure (surface area is 701 m2 g−1). (2) Nitrogen and sulfur co-doping (4.66 and 1.83 wt%, respectively). (3) Higher rate of capacitance contribution during process of charge and discharge.
Duan, Mengqi, Yanshuang Meng, Chen Wang, Chaoyu Duan, Fuliang Zhu, Yue Zhang.
"A Simple Synthesis of Nitrogen-Sulfur Co-Doped Porous Carbon Using Ionic Liquids as Dopant for High Rate Performance Li-Ion Batteries."
Journal of Electroanalytical Chemistry, 834: 17-25.
doi: 10.1016/j.jelechem.2018.12.042 source: https://www.sciencedirect.com/science/article/pii/S1572665718308518?via%3Dihub