Microporous Carbon Materials Derived From Sucrose as Sulfur Host for Lithium Sulfur Batteries

2018 5th International Conference on Advanced Composite Materials and Manufacturing Engineering

Wang, Yiqi^1 ; Liu, Shuangke^1 ; Hong, Xiaobin^1 ; Wang, Danqin^1 ; Luo, Shiqiang^1

College of Aerospace Science and Engineering, National University of Defense Technology, Changsha

410000, China^1

关键词: Capacity decay;    Carbonization methods;    Commercial applications;    Electrochemical performance;    High energy densities;    Initial discharge capacities;    Micro-porous carbons;    Specific capacities;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/394/4/042031/pdf
DOI  :  10.1088/1757-899X/394/4/042031

来源: IOP

【 摘 要 】

Lithium sulfur batteries have attracted increasing attention due to its high theoretical specific capacity (1675 mAh g-1) and high energy density (2600Wh kg-1)). However, to achieve the commercial application of lithium sulfur batteries, a cathode with excellent electrochemical performance is needed. Herein, we synthesized microporous carbon materials as sulfur host via a simple activation carbonization method. The MC/S delivered an excellent electrochemical performance. At 1 C rate, MC/S showed an initial discharge capacity of 899.5 mAh g-1, and maintained a capacity of 617.6 mAh g-1 after 150 cycles corresponding to a capacity decay rate of 0.208% per-cycle.