title: Facile Synthesis of a MoS2and Functionalized Graphene Heterostructure for Enhanced Lithium-Storage Performance.
abstract: A facile strategy was designed for the in situ synthesis of MoS2nanospheres on functionalized graphene nanoplates (MoS2@f-graphene) for use as lithium-ion battery anode materials. A modified Birch reduction was used to exfoliate graphite into few-layer graphene followed by modification with functional groups. Compared to the most common approach of mixing MoS2and reduced graphene oxide, our approach provides a way to circumvent the harsh oxidation and destruction of the carbon basal planes. In this process, alkylcarboxyl functional groups on the functionalized graphene (f-graphene) serve as sites where MoS2nanospheres crystallize, and thus create bridges between the MoS2nanospheres and the graphene layers to effectively facilitate electronic transport and to avoid both the aggregation of MoS2and the restacking of graphene. As anode materials, this unique MoS2@f-graphene heterostructure has a high specific capacity of 1173 mAh g-1at a current density of 100 mA g-1and a good rate capacity (910 mAh g-1at 1600 mA g-1).
authors.affiliation: School of Materials Science and Engineering, Tongji University , Shanghai 201804, P. R. China.|Key Laboratory of Advanced Civil Engineering Materials, Tongji University, Ministry of Education , Shanghai 201804, China.
authors.forename: Beibei
authors.initials: B
authors.lastname: Wang
authors.affiliation: School of Science, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University , Xi'an 710049, P. R. China.
authors.forename: Yin
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: School of Materials Science and Engineering, Tongji University , Shanghai 201804, P. R. China.
authors.forename: Jin
authors.initials: J
authors.lastname: Zhang
authors.affiliation: School of Materials Science and Engineering, Tongji University , Shanghai 201804, P. R. China.
authors.forename: Ruoyu
authors.initials: R
authors.lastname: Xia
authors.affiliation: School of Materials Science and Engineering, Tongji University , Shanghai 201804, P. R. China.
authors.forename: Yingli
authors.initials: Y
authors.lastname: Chu
authors.affiliation: School of Materials Science and Engineering, Tongji University , Shanghai 201804, P. R. China.
authors.forename: Jiachen
authors.initials: J
authors.lastname: Zhou
authors.affiliation: School of Materials Science and Engineering, Tongji University , Shanghai 201804, P. R. China.
authors.forename: Xiaowei
authors.initials: X
authors.lastname: Yang
authors.affiliation: School of Materials Science and Engineering, Tongji University , Shanghai 201804, P. R. China.|Key Laboratory of Advanced Civil Engineering Materials, Tongji University, Ministry of Education , Shanghai 201804, China.
authors.forename: Jia
authors.identifier: http://orcid.org/0000-0002-2873-7704
authors.initials: J
authors.lastname: Huang
keywords: composites; functionalized graphene; heterostructure; lithium-ion battery anode; modification; molybdenum disulfide