Highly-rough surface carbon nanofibers film as an effective interlayer for lithium-sulfur batteries

• 作者: Hongfan Zhu Huaping Zhao Mo Sha Xuhui Sun Yong Lei Yuting Nie
• 来源期刊: 半导体学报（英文版）
• 年，卷（期）: 2020,（9）
• 页码范围: 153-158
• 页数: 6页
• 语种: 英文
• DOI: 10.1088/1674-4926/41/9/092701

摘要

Lithium-sulfur (Li-S) battery with a new configuration is demonstrated by inserting a flexible nitrogen-doping carbon nanofiber (N-CNFs) interlayer between the sulfur cathode and the separator.The N-CNFs film with high surface roughness and surface area is fabricated by electrospinning and a subsequent calcination process.The N-CNFs film interlayer not only effectively traps the shuttling migration of polysulfides but also gives the whole battery reliable electronic conductivity,which can effectively enhance the electrochemical performance of Li-S batteries.Finally,Li-S batteries with long cycling stability of 785 mAh/g after 200 cycles and good rate capability of 573 mAh/g at 5 C are achieved.