title: Two-dimensional V2O5 sheet network as electrode for lithium-ion batteries.
abstract: Two-dimensional V2O5 and manganese-doped V2O5 sheet network were synthesized by a one-step polymer-assisted chemical solution method and characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, thermal-gravimetric analysis, and galvanostatic discharge-charge analysis. The V2O5 particles were covered with thin carbon layers, which remained after decomposition of the polymer, forming a network-like sheet structure. This V2O5 network exhibits a high capacity of about 300 and 600 mA·h/g at a current density of 100 mA/g when it was used as a cathode and anode, respectively. After doping with 5% molar ratio of manganese, the capacity of the cathode increases from 99 to 165 mA·h/g at a current density of 1 A/g (∼3 C). This unique network structure provides an interconnected transportation pathway for lithium ions. Improvement of electrochemical performance after doping manganese could be attributed to the enhancement of electronic conductivity.
authors.affiliation: Department of Chemical and Materials Engineering, New Mexico State University , New Mexico 88003, United States.
authors.forename: Yun
authors.initials: Y
authors.lastname: Xu
authors.forename: Marco
authors.initials: M
authors.lastname: Dunwell
authors.forename: Ling
authors.initials: L
authors.lastname: Fei
authors.forename: Engang
authors.initials: E
authors.lastname: Fu
authors.forename: Qianglu
authors.initials: Q
authors.lastname: Lin
authors.forename: Brian
authors.initials: B
authors.lastname: Patterson
authors.forename: Bin
authors.initials: B
authors.lastname: Yuan
authors.forename: Shuguang
authors.initials: S
authors.lastname: Deng
authors.forename: Paul
authors.initials: P
authors.lastname: Andersen
authors.forename: Hongmei
authors.initials: H
authors.lastname: Luo
authors.forename: Guifu
authors.initials: G
authors.lastname: Zou
keywords: V2O5 network; conductivity; lithium-ion battery; manganese-doped; polymer-assisted solution method