title: Hydrogen storage in a chemical bond stabilized Co9S8-graphene layered structure.
abstract: With the high energy ball milling method, a Co9S8-decorated reduced graphene oxide (RGO) composite, which shows excellent hydrogen storage capacity, has been successfully fabricated with a well-organized layered structure. Moreover, the stabilized mechanism of the well-organized layered structure is investigated and attributed to the strong interactions between Co9S8 and defective RGO. The C-S bond interaction is identified and the hydrogen storage process is also studied with different analysis methods. Finally, an optimized Co9S8 to RGO weight ratio of 6:1 shows excellent electrochemical performances in terms of the excellent cycling stability and competitive hydrogen storage capacity of 4.86 wt%.
authors.affiliation: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, PR China. qinwei@hit.edu.cn.
authors.forename: Wei
authors.initials: W
authors.lastname: Qin
authors.forename: Lu
authors.initials: L
authors.lastname: Han
authors.forename: Hai
authors.initials: H
authors.lastname: Bi
authors.forename: Jiahuang
authors.initials: J
authors.lastname: Jian
authors.forename: Xiaohong
authors.initials: X
authors.lastname: Wu
authors.forename: Peng
authors.initials: P
authors.lastname: Gao