title: Graphene-Embedded Co3O4Rose-Spheres for Enhanced Performance in Lithium Ion Batteries.
abstract: Co3O4has been widely studied as a promising candidate as an anode material for lithium ion batteries. However, the huge volume change and structural strain associated with the Li+insertion and extraction process leads to the pulverization and deterioration of the electrode, resulting in a poor performance in lithium ion batteries. In this paper, Co3O4rose-spheres obtained via hydrothermal technique are successfully embedded in graphene through an electrostatic self-assembly process. Graphene-embedded Co3O4rose-spheres (G-Co3O4) show a high reversible capacity, a good cyclic performance, and an excellent rate capability, e.g., a stable capacity of 1110.8 mAh g-1at 90 mA g-1(0.1 C), and a reversible capacity of 462.3 mAh g-1at 1800 mA g-1(2 C), benefitted from the novel architecture of graphene-embedded Co3O4rose-spheres. This work has demonstrated a feasible strategy to improve the performance of Co3O4for lithium-ion battery application.
authors.affiliation: School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology , Yueyang 414006, China.
authors.forename: Mingjun
authors.initials: M
authors.lastname: Jing
authors.affiliation: School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology , Yueyang 414006, China.|Department of Chemistry, University of Missouri-Kansas City , Kansas City, Missouri 64110, United States.
authors.forename: Minjie
authors.initials: M
authors.lastname: Zhou
authors.affiliation: School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology , Yueyang 414006, China.
authors.forename: Gangyong
authors.initials: G
authors.lastname: Li
authors.affiliation: School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology , Yueyang 414006, China.
authors.forename: Zhengu
authors.initials: Z
authors.lastname: Chen
authors.affiliation: School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology , Yueyang 414006, China.
authors.forename: Wenyuan
authors.initials: W
authors.lastname: Xu
authors.affiliation: Department of Chemistry, University of Missouri-Kansas City , Kansas City, Missouri 64110, United States.
authors.forename: Xiaobo
authors.initials: X
authors.lastname: Chen
authors.affiliation: School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology , Yueyang 414006, China.|Department of Chemistry, University of Missouri-Kansas City , Kansas City, Missouri 64110, United States.
authors.forename: Zhaohui
authors.identifier: http://orcid.org/0000-0003-1621-8242
authors.initials: Z
authors.lastname: Hou
keywords: Co3O4 rose-spheres; electrostatic self-assembly; graphene; graphene-embedded Co3O4 rose-spheres; lithium ion batteries