title: Fluorine-Doped Tin Oxide Nanocrystal/Reduced Graphene Oxide Composites as Lithium Ion Battery Anode Material with High Capacity and Cycling Stability.
abstract: Tin oxide (SnO2) is a kind of anode material with high theoretical capacity. However, the volume expansion and fast capability fading during cycling have prevented its practical application in lithium ion batteries. Herein, we report that the nanocomposite of fluorine-doped tin oxide (FTO) and reduced graphene oxide (RGO) is an ideal anode material with high capacity, high rate capability, and high stability. The FTO conductive nanocrystals were successfully anchored on RGO nanosheets from an FTO nanocrystals colloid and RGO suspension by hydrothermal treatment. As the anode material, the FTO/RGO composite showed high structural stability during the lithiation and delithiation processes. The conductive FTO nanocrystals favor the formation of stable and thin solid electrolyte interface films. Significantly, the FTO/RGO composite retains a discharge capacity as high as 1439 mAhg(-1) after 200 cycles at a current density of 100 mAg(-1). Moreover, its rate capacity displays 1148 mAhg(-1) at a current density of 1000 mAg(-1).
authors.affiliation: Research Centre of Nanoscience and Nanotechnology, Shanghai University , Shanghai 200444, China.
authors.forename: Haiping
authors.initials: H
authors.lastname: Xu
authors.affiliation: Research Centre of Nanoscience and Nanotechnology, Shanghai University , Shanghai 200444, China.
authors.forename: Liyi
authors.initials: L
authors.lastname: Shi
authors.affiliation: Research Centre of Nanoscience and Nanotechnology, Shanghai University , Shanghai 200444, China.
authors.forename: Zhuyi
authors.initials: Z
authors.lastname: Wang
authors.affiliation: Department of Chemistry, Ångström Laboratory, Uppsala University , 75121 Uppsala, Sweden.
authors.forename: Jia
authors.initials: J
authors.lastname: Liu
authors.affiliation: Department of Chemistry, Ångström Laboratory, Uppsala University , 75121 Uppsala, Sweden.
authors.forename: Jiefang
authors.initials: J
authors.lastname: Zhu
authors.affiliation: Research Centre of Nanoscience and Nanotechnology, Shanghai University , Shanghai 200444, China.
authors.forename: Yin
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: Research Centre of Nanoscience and Nanotechnology, Shanghai University , Shanghai 200444, China.
authors.forename: Meihong
authors.initials: M
authors.lastname: Zhang
authors.affiliation: Research Centre of Nanoscience and Nanotechnology, Shanghai University , Shanghai 200444, China.
authors.forename: Shuai
authors.initials: S
authors.lastname: Yuan
keywords: anode; capacity; cycling stability; fluorine-doped tin oxide; reduced graphene oxide