title: Stable anode performance of vanadium oxide hydrate semi-microspheres and their graphene based composite microspheres in sodium-ion batteries.
abstract: A simple and versatile method for preparation of new crystalline vanadium oxide hydrate semi-microspheres is developed via a simple hydrothermal route, which are tested as a novel high-energy anode materials for sodium-ion batteries. The enhancement of electrochemical performance for the vanadium oxide hydrate electrode is offered by addition of graphene. The graphene-based vanadium oxide hydrate microsphere composite shows a high discharge capacity of 336.1 mA h g(-1) for the second cycle between a 0.05-3.0 V voltage limit at a discharge current density of 10 mA g(-1). A reversible capacity of 303.1 mA h g(-1) is retained after 20 cycles.
authors.affiliation: College of Chemistry, Fuzhou University, 523 Industry Road, Fuzhou 350002, P.R. China. feilin09053@gmail.com.
authors.forename: Hailong
authors.initials: H
authors.lastname: Fei
authors.forename: Zhiwei
authors.initials: Z
authors.lastname: Li
authors.forename: Wenjing
authors.initials: W
authors.lastname: Feng
authors.forename: Xin
authors.initials: X
authors.lastname: Liu