title: Lamellar MoSe2nanosheets embedded with MoO2nanoparticles: novel hybrid nanostructures promoted excellent performances for lithium ion batteries.
abstract: A carbon-free nanocomposite consisting of MoO2nanoparticles embedded between MoSe2nanosheets, named MoO2@MoSe2, has been synthesized and demonstrated excellent electrochemical properties for lithium ion batteries. In such a composite, MoSe2nanosheets provide a flexible substrate for MoO2nanoparticles; while MoO2nanoparticles act as spacers to retain the desired active surface to electrolyte and also introduce metallic conduction. In addition, the heterojunctions at the interface between MoSe2and MoO2introduce a self-built electric field to promote the lithiation/delithiation process. As a result, such lamellar composite has a long cycling stability with a reversible capacity of 520.4 mA h g-1at a current density of 2000 mA g-1after 400 cycles and excellent rate performance, which are attributed to the synergistic combination of the two components in nanoscale.
authors.affiliation: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China. suijiehe@hit.edu.cn and Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195, USA. gzcao@u.washington.edu.
authors.forename: Xu
authors.initials: X
authors.lastname: Zhao
authors.affiliation: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China. suijiehe@hit.edu.cn.
authors.forename: Jiehe
authors.initials: J
authors.lastname: Sui
authors.affiliation: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China. suijiehe@hit.edu.cn.
authors.forename: Fei
authors.initials: F
authors.lastname: Li
authors.affiliation: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China. suijiehe@hit.edu.cn.
authors.forename: Haitao
authors.initials: H
authors.lastname: Fang
authors.affiliation: Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195, USA. gzcao@u.washington.edu.
authors.forename: Hongen
authors.initials: H
authors.lastname: Wang
authors.affiliation: Department of Mechanical Engineering, University of Washington, Seattle, WA 98195, USA.
authors.forename: Jiangyu
authors.initials: J
authors.lastname: Li
authors.affiliation: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China. suijiehe@hit.edu.cn.
authors.forename: Wei
authors.initials: W
authors.lastname: Cai
authors.affiliation: Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195, USA. gzcao@u.washington.edu.
authors.forename: Guozhong
authors.initials: G
authors.lastname: Cao