An N-doped porous carbon/MXene composite as a sulfur host for lithium–sulfur batteries. Issue 10 (12th September 2019)

• Record Type: Journal Article
• Authors: Zhang, Youquan; Tang, Wenwen; Zhan, Renming; Liu, Heng; Chen, Hao; Yang, Jingang; Xu, Maowen
• Is Part Of: Inorganic chemistry frontiers. Volume 6:Issue 10(2019)
• Page Start: 2894
• Page End: 2899
• Publication Date: 2019-09-12
• Subjects: Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c9qi00723g
• Languages: English
• ISSNs: 2052-1553

Abstract

Abstract : The sulfur content of the composite can reach 80%, and the composite has multiple adsorption for polysulfides. Abstract : A three-dimensional composite (N-PC/Ti3 C2 ) of MXene nanosheets and porous carbon was prepared by a facile self-sacrificing template method and further served as a sulfur host for lithium–sulfur batteries. The coexistence of nitrogen-doped porous carbon and MXene nanosheets endowed the composite with a large specific area, a 3D structure, a conductive network and strong physical and chemical double-adsorption of polysulfides. Furthermore, the sulfur content of the N-PC/Ti3 C2 composite was high: up to 80%. As the cathode material of lithium–sulfur batteries, the S@N-PC/Ti3 C2 electrode exhibited a long cycle life with a slow fading rate of 0.04% per cycle over 800 cycles.