A Typha Angustifolia-Like MoS2/Carbon Nanofiber Composite for High Performance Li-S Batteries

Xingxing Gu; Han Kang; Chengbin Shao; Xiaolei Ren; Xiaoteng Liu

doi:10.3389/fchem.2020.00149

A Typha Angustifolia-Like MoS₂/Carbon Nanofiber Composite for High Performance Li-S Batteries

Front Chem. 2020 Mar 3:8:149. doi: 10.3389/fchem.2020.00149. eCollection 2020.

Authors

Xingxing Gu^{1

2}, Han Kang¹, Chengbin Shao¹, Xiaolei Ren¹, Xiaoteng Liu^{1

2}

Affiliations

¹ Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing, China.
² Department of Mechanical and Construction Engineering, Faculty of Engineering and Environment, Northumbria University, Newcastle upon Tyne, United Kingdom.

Abstract

A Typha Angustifolia-like MoS₂/carbon nanofiber composite as both a chemically trapping agent and redox conversion catalyst for lithium polysulfides has been successfully synthesized via a simple hydrothermal method. Cycling performance and coulombic efficiency have been improved significantly by applying the Typha Angustifolia-like MoS₂/carbon nanofiber as the interlayer of a pure sulfur cathode, resulting in a capacity degradation of only 0.09% per cycle and a coulombic efficiency which can reach as high as 99%.

Keywords: Li-S batteries; MoS2/BCF; chemically trapping; electrocatalysis; polysulfides.