Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4762728 | Chemical Engineering Journal | 2018 | 6 Pages |
Abstract
The porous carbon nanofibers-sulfur (PCNFs-S) composite electrode with micro-mesoporous (<10 nm) and meso-macroporous (>10 nm) is successfully designed and prepared via the electro-blown spinning technique and thermal treatment. The meso-macroporous structure in the PCNFs-S composite can provide high sulfur content up to 80 wt%, while micro-mesoporous affords efficient trapping of polysulfides and inhibits the “shuttle effect”. And the tailored porous fibrous network structure and carbon nanotubes (CNTs) in the composite facilitate the construction of a high electrical conductive pathway. Therefore, the lithium-sulfur (Li-S) batteries electrode exhibits high initial discharge capacities as high as 954 and 602.2 mAh gâ1 at 0.5 C and 2 C, respectively, and can obtain quite stable capacities of 795 and 601.5 mAh gâ1 after 350 cycles.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Kang Weimin, Fan Lanlan, Deng Nanping, Zhao Huijuan, Li Quanxiang, Naebe Minoo, Yan Jing, Cheng Bowen,