Fabrication of few-layer molybdenum disulfide/reduced graphene oxide hybrids with enhanced lithium storage performance through a supramolecule-mediated hydrothermal route. (April 2017)

• Record Type: Journal Article
• Authors: Yu, Zheting; Ye, Jianbo; Chen, Weixiang; Xu, Shurui; Huang, Feihe
• Is Part Of: Carbon. Volume 114(2017)
• Page Start: 125
• Page End: 133
• Publication Date: 2017-04
• Subjects: Carbon -- Periodicals; Carbone -- Périodiques; Koolstof; Toepassingen; Electronic journals; 546.681
• DOI: 10.1016/j.carbon.2016.12.002
• Languages: English
• ISSNs: 0008-6223

Abstract

Abstract: Few-layer molybdenum disulfide/reduced graphene oxide (MoS2 /rGO) hybrids are fabricated through a facile hydrothermal route with mediation of a supramolecule (N-methylimidazole water-soluble pillar [5]arene, IMWP5). Effects of IMWP5 on the microstructure of MoS2 /rGO hybrids are investigated. It is found that MoS2 /rGO hybrids display a graphene-like morphology and few-layer MoS2 sheets are well dispersed on the surface of reduced graphene oxide (rGO). As host materials for electrochemical lithium storage, MoS2 /rGO hybrid delivers a reversible specific capacity as high as 1289 mAh g −1 at a current density of 100 mA g −1 and exhibits enhanced rate capability of 963 mAh g −1 at a high current density of 1000 mA g −1 . In particular, the reversible capacity of 996 mAh g −1 can be retained after 1100 cycles at current density of 1000 mA g −1, indicating its excellent cyclic stability. Such great electrochemical performance is ascribed to the robust heterostructure and synergetic effects between few-layer MoS2 and rGO. Graphical abstract: Few-layer MoS2 /rGO hybrids are synthesized through a hydrothermal route with mediation of N-methylimidazole water-soluble pillar [5]arene and in the presence of commercial single layer graphene oxide sheets. The MoS2 /rGO hybrid exhibits excellent electrochemical performance for reversible lithium storage. The reversible capacity of 996 mAh g −1 can be retained after 1100 cycles at current density of 1000 mA g −1, indicating its excellent cyclic stability.