title: Hollow carbon nanospheres/silicon/alumina core-shell film as an anode for lithium-ion batteries.
abstract: Hollow carbon nanospheres/silicon/alumina (CNS/Si/Al₂O₃) core-shell films obtained by the deposition of Si and Al₂O₃ on hollow CNS interconnected films are used as the anode materials for lithium-ion batteries. The hollow CNS film acts as a three dimensional conductive substrate and provides void space for silicon volume expansion during electrochemical cycling. The Al2O3 thin layer is beneficial to the reduction of solid-electrolyte interphase (SEI) formation. Moreover, as-designed structure holds the robust surface-to-surface contact between Si and CNSs, which facilitates the fast electron transport. As a consequence, the electrode exhibits high specific capacity and remarkable capacity retention simultaneously: 1560 mA h g(-1) after 100 cycles at a current density of 1 A g(-1) with the capacity retention of 85% and an average decay rate of 0.16% per cycle. The superior battery properties are further confirmed by cyclic voltammetry (CV) and impedance measurement.
authors.affiliation: 1] Center for Integrated Nanostructure Physics, Institute for Basic Science (IBS), Sungkyunkwan University, Suwon 440-746, Korea [2] Department of Energy Science, Department of Physics, Sungkyunkwan University, Suwon 440-746, Korea.
authors.forename: Bing
authors.initials: B
authors.lastname: Li
authors.affiliation: 1] Center for Integrated Nanostructure Physics, Institute for Basic Science (IBS), Sungkyunkwan University, Suwon 440-746, Korea [2] Department of Energy Science, Department of Physics, Sungkyunkwan University, Suwon 440-746, Korea.
authors.forename: Fei
authors.initials: F
authors.lastname: Yao
authors.affiliation: 1] Center for Integrated Nanostructure Physics, Institute for Basic Science (IBS), Sungkyunkwan University, Suwon 440-746, Korea [2] Department of Energy Science, Department of Physics, Sungkyunkwan University, Suwon 440-746, Korea.
authors.forename: Jung Jun
authors.initials: JJ
authors.lastname: Bae
authors.affiliation: 1] Center for Integrated Nanostructure Physics, Institute for Basic Science (IBS), Sungkyunkwan University, Suwon 440-746, Korea [2] Department of Energy Science, Department of Physics, Sungkyunkwan University, Suwon 440-746, Korea.
authors.forename: Jian
authors.initials: J
authors.lastname: Chang
authors.affiliation: Department of Energy Science, Department of Physics, Sungkyunkwan University, Suwon 440-746, Korea.
authors.forename: Mihai Robert
authors.initials: MR
authors.lastname: Zamfir
authors.affiliation: Department of Energy Science, Department of Physics, Sungkyunkwan University, Suwon 440-746, Korea.
authors.forename: Duc Toan
authors.initials: DT
authors.lastname: Le
authors.affiliation: 1] Center for Integrated Nanostructure Physics, Institute for Basic Science (IBS), Sungkyunkwan University, Suwon 440-746, Korea [2] Department of Energy Science, Department of Physics, Sungkyunkwan University, Suwon 440-746, Korea.
authors.forename: Duy Tho
authors.initials: DT
authors.lastname: Pham
authors.affiliation: 1] Center for Integrated Nanostructure Physics, Institute for Basic Science (IBS), Sungkyunkwan University, Suwon 440-746, Korea [2] Department of Energy Science, Department of Physics, Sungkyunkwan University, Suwon 440-746, Korea [3] School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, People's Republic of China.
authors.forename: Hongyan
authors.initials: H
authors.lastname: Yue
authors.affiliation: 1] Center for Integrated Nanostructure Physics, Institute for Basic Science (IBS), Sungkyunkwan University, Suwon 440-746, Korea [2] Department of Energy Science, Department of Physics, Sungkyunkwan University, Suwon 440-746, Korea.
authors.forename: Young Hee
authors.initials: YH
authors.lastname: Lee