title: Carbon Nanohorns Carried Iron Fluoride Nanocomposite with ultrahigh rate lithium ion storage properties.
abstract: Novel hierarchical carbon nanohorns (CNHs) carried iron fluoride nanocomposites have been constructed by direct growth of FeF3·0.33H2O nanoparticles on CNHs. In the FeF3·0.33H2O@CNHs nanocomposite, the mesopore CNHs play the role as conductive matrix and robust carrier to support the FeF3·0.33H2O nanoparticles. The intimate conductive contact between the two components can build up an express way of electron transfer for rapid Li(+) insertion/extraction. The CNHs can not only suppress the growth and agglomeration of FeF3·0.33H2O during the crystallization process, but also sever as an "elastic confinement" to support FeF3·0.33H2O. As was to be expected, the hierarchical FeF3·0.33H2O@CNHs nanocomposite exhibits impressive rate capability and excellent cycle performance. Markedly, the nanocomposite proves stable, ultrahigh rate lithium ion storage properties of 81 mAh g(-1) at charge/discharge rate of 50 C (a discharge/charge process only takes 72 s). The integration of high electron conductivity, confined nano sized FeF3·0.33H2O (~5 nm), hierarchical mesopores CNHs and the "elastic confinement" support, the FeF3·0.33H2O@CNHs nanocomposite demonstrates excellent ultrahigh rate capability and good cycling properties.
authors.affiliation: Department of Chemistry, Harbin Institute of Technology, Harbin, China.
authors.forename: Lishuang
authors.initials: L
authors.lastname: Fan
authors.affiliation: Department of Chemistry, Harbin Institute of Technology, Harbin, China.
authors.forename: Bingjiang
authors.initials: B
authors.lastname: Li
authors.affiliation: 1] State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, China [2] Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin, China.
authors.forename: Naiqing
authors.initials: N
authors.lastname: Zhang
authors.affiliation: 1] State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, China [2] Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin, China.
authors.forename: Kening
authors.initials: K
authors.lastname: Sun