Interconnected NiCo2O4 nanosheet arrays grown on carbon cloth as a host, adsorber and catalyst for sulfur species enabling high-performance Li–S batteries. Issue 6 (10th February 2021)

• Record Type: Journal Article
• Authors: Zhou, Junli; Yang, Xiaolan; Zhang, Yajun; Jia, Jinzhu; He, Xinjian; Yu, Lin; Pan, Yuede; Liao, Jingwen; Sun, Ming; He, Jun
• Is Part Of: Nanoscale advances. Volume 3:Issue 6(2021)
• Page Start: 1690
• Page End: 1698
• Publication Date: 2021-02-10
• Subjects: 620.5
• DOI: 10.1039/d0na00947d
• Languages: English
• ISSNs: 2516-0230

Abstract

Abstract : Interconnected NiCo2 O4 nanosheet arrays grown on carbon cloth as an efficient host and catalyst for sulfur species enabling high-performance Li–S batteries. Abstract : Li–S batteries are a promising next-generation electrochemical energy-storage system due to their high energy density, as well as the abundance and low cost of sulfur. However, the low conductivity of sulfur and Li2 S/Li2 S2, as well as the dissolution and shuttling of intermediate lithium polysulfides, is a great challenge for high-performance Li–S batteries. Herein, interconnected NiCo2 O4 nanosheet arrays grown on carbon cloth (CC) are applied as the cathode (S/NiCo2 O4 /CC) in Li–S batteries for accommodating sulfur. The obtained cathode shows high conductivity, high dispersion of sulfur species and excellent polysulfide adsorption and catalytic properties. As a result, significantly higher specific capacity (1480 vs. 1048 mA h g −1 at 0.1C) and greatly enhanced rate performance (624 vs. 215 mA h g −1 at 2C) are obtained for the S/NiCo2 O4 /CC cathode in comparison to S/CC. Further, the S/NiCo2 O4 /CC cathode demonstrates a low capacity decay of 0.060% per cycle over 400 cycles at 0.5C.