A novel facile and fast hydrothermal-assisted method to synthesize sulfur/carbon composites for high-performance lithium–sulfur batteries. Issue 85 (30th August 2016)

• Record Type: Journal Article
• Authors: Chen, Yuqing; Zhang, Hongzhang; Yang, Xiaofei; Feng, Kai; Li, Xianfeng; Zhang, Huamin
• Is Part Of: RSC advances. Volume 6:Issue 85(2016)
• Page Start: 81950
• Page End: 81957
• Publication Date: 2016-08-30
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra19613f
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Hydrothermal-assisted sulfur impregnation method was first proposed to prepare sulfur/carbon (S/C) composites for lithium–sulfur (Li–S) battery applications. Abstract : Hydrothermal-assisted sulfur impregnation method was first proposed to prepare sulfur/carbon (S/C) composites for lithium–sulfur (Li–S) battery applications. Comparing with the currently existing sulfur impregnation method, this facile one-pot method is proved to be energy-saving and time-saving, to have a sulfur content that is exactly controllable and to be environment-friendly. In the hydrothermal environment, sulfur would selectively diffuse into the pores of carbon hosts due to its high mobility, homogeneous dispersibility, hydrophobicity and carbon affinity. As a result, the S/C composite obtained from hydrothermal-assisted method under a low temperature of 120 °C and a short time of 2 hours exhibits a comparable battery performance to that obtained from the traditional melting method under 155 °C for 20 hours, which reached 1239 mA h g −1 at 0.2C and 796 mA h g −1 at even 1C between 1.85–2.8 V, being rather suitable for large-scale manufacture and commercial development.