title: Mesoporous SnO2@carbon core-shell nanostructures with superior electrochemical performance for lithium ion batteries.
abstract: SnO2@carbon nanostructure composites are prepared by a simple hydrothermal method. The composite exhibits unique structure, which consists of a mesoporous SnO2 core assembled of very small nanoparticles and a carbon shell with 10 nm thickness. The mesoporous SnO2@carbon core-shell nanostructures manifest superior electrochemical performance as an anode material for lithium ion batteries. The reversible specific capacity of the composite is about 908 mAh g(-1) for the first cycle and it can retain about 680 mAh g(-1) after 40 charge/discharge cycles at a current density of 0.3 C. Moreover, it shows excellent rate capability even at the high rate of 4.5 C. The enhanced performance was attributed to the mesoporous structure and a suitable carbon coating.
authors.affiliation: Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education and State Key Laboratory for Chemo/Biosensing and Chemometrics, Hunan University, Changsha, Hunan 410082, People's Republic of China.
authors.forename: L B
authors.initials: LB
authors.lastname: Chen
authors.forename: X M
authors.initials: XM
authors.lastname: Yin
authors.forename: L
authors.initials: L
authors.lastname: Mei
authors.forename: C C
authors.initials: CC
authors.lastname: Li
authors.forename: D N
authors.initials: DN
authors.lastname: Lei
authors.forename: M
authors.initials: M
authors.lastname: Zhang
authors.forename: Q H
authors.initials: QH
authors.lastname: Li
authors.forename: Z
authors.initials: Z
authors.lastname: Xu
authors.forename: C M
authors.initials: CM
authors.lastname: Xu
authors.forename: T H
authors.initials: TH
authors.lastname: Wang
mesh_terms: D025802:Electric Capacitance; D011211:Electric Power Supplies; D004566:Electrodes; D008094:Lithium / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D016062:Porosity; D017971:Tin Compounds / Q000737:chemistry*
chemical_list: D017971:Tin Compounds; D008094:Lithium; C045358:stannic oxide