title: In Situ Fabrication of CoS and NiS Nanomaterials Anchored on Reduced Graphene Oxide for Reversible Lithium Storage.
abstract: CoS and NiS nanomaterials anchored on reduced graphene oxide (rGO) sheets, synthesized via combination of hydrothermal with sulfidation process, are studied as high-capacity anode materials for the reversible lithium storage. The obtained CoS nanofibers and NiS nanoparticles are uniformly dispersed on rGO sheets without aggregation, forming the sheet-on-sheet composite structure. Such nanoarchitecture can not only facilitate ion/electron transport along the interfaces, but also effectively prevent metal-sulfide nanomaterials aggregation during the lithium reactions. Both the rGO-supported CoS nanofibers (NFs) and NiS nanoparticles (NPs) show superior lithium storage performance. In particular, the CoS NFs-rGO electrodes deliver the discharge capacity as high as 939 mA h g(-1) after the 100th cycle at 100 mA g(-1) with Coulombic efficiency above 98%. This strategy for construction of such composite structure can also synthesize other metal-sulfide-rGO nanomaterials for high-capacity lithium-ion batteries.
authors.affiliation: State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai 200050, China.
authors.forename: Yingbin
authors.initials: Y
authors.lastname: Tan
authors.affiliation: Department of Chemical Engineering, School of Environmental and Chemical Engineering, Shanghai University , Shanghai 200444, China.|Department of Materials Science, Fudan University , Shanghai 200433, China.
authors.forename: Ming
authors.initials: M
authors.lastname: Liang
authors.affiliation: State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai 200050, China.
authors.forename: Peili
authors.initials: P
authors.lastname: Lou
authors.affiliation: State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai 200050, China.
authors.forename: Zhonghui
authors.initials: Z
authors.lastname: Cui
authors.affiliation: State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai 200050, China.
authors.forename: Xiangxin
authors.initials: X
authors.lastname: Guo
authors.affiliation: Department of Chemical Engineering, School of Environmental and Chemical Engineering, Shanghai University , Shanghai 200444, China.
authors.forename: Weiwei
authors.initials: W
authors.lastname: Sun
authors.affiliation: Department of Materials Science, Fudan University , Shanghai 200433, China.
authors.forename: Xuebin
authors.initials: X
authors.lastname: Yu
keywords: anode materials; lithium-ion batteries; metal-sulfide nanomaterials; nanofibers; reduced graphene oxide