title: Novel Li₂MnO₃ nanowire anode with internal Li-enrichment for use in a Li-ion battery.
abstract: Anode materials which undergo a conversion reaction can achieve larger specific capacities than conventional carbon-based materials. They can even achieve higher energy densities when used at low voltages. However, the large amounts of Li₂O generated in the interior of these structures when Li ions are inserted can cause volume expansion and mechanical fracturing from the inside out. This leads to a poor cycling performance and limits their commercial application. To overcome this limitation, we introduced Li ions into the interior of the cells of manganese oxide materials and successfully synthesized a novel Li-rich anode material (Li₂MnO₃). The reversible capacity reached 1279 mA h g(-1) after 500 cycles, much higher than that of pure MnO₂ or other commercial anodes. This optimization of the internal Li-enrichment and its application in Li₂MnO₃ nanowires used as low voltage anodes in Li-ion batteries have rarely been reported. Further investigations by X-ray diffraction and photoelectron spectroscopy suggested that the strategy of optimizing the internal Li-enrichment of this novel Li₂MnO₃ anode is a promising development for Li-ion batteries.
authors.affiliation: State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, WUT-Harvard Joint Nano Key Laboratory, Wuhan University of Technology, Wuhan, 430070, P. R. China. mlq518@whut.edu.cn.
authors.forename: Dandan
authors.initials: D
authors.lastname: Wang
authors.forename: Yunlong
authors.initials: Y
authors.lastname: Zhao
authors.forename: Xu
authors.initials: X
authors.lastname: Xu
authors.forename: Kalele Mulonda
authors.initials: KM
authors.lastname: Hercule
authors.forename: Mengyu
authors.initials: M
authors.lastname: Yan
authors.forename: Qinyou
authors.initials: Q
authors.lastname: An
authors.forename: Xiaocong
authors.initials: X
authors.lastname: Tian
authors.forename: Jiaming
authors.initials: J
authors.lastname: Xu
authors.forename: Longbing
authors.initials: L
authors.lastname: Qu
authors.forename: Liqiang
authors.initials: L
authors.lastname: Mai