• 文献标题:   NiCo nanoalloy encapsulated in graphene layers for improving hydrogen storage properties of LiAlH4
  • 文献类型:   Article
  • 作  者:   JIAO CL, SUN LX, XU F, LIU SS, ZHANG J, JIANG X, YANG LN
  • 作者关键词:  
  • 出版物名称:   SCIENTIFIC REPORTS
  • ISSN:   2045-2322
  • 通讯作者地址:   Guilin Univ Elect Technol
  • 被引频次:   9
  • DOI:   10.1038/srep27429
  • 出版年:   2016

▎ 摘  要

NiCo nanoalloy (4-6 nm) encapsulated in grapheme layers (NiCo@G) has been prepared by thermolysis of a 3D bimetallic complex CoCo[Ni(EDTA)](2)center dot 4H(2)O and successfully employed as a catalyst to improve the dehydrogenation performances of LiAlH4 by solid ball-milling. NiCo@G presents a superior catalytic effect on the dehydrogenation of LiAlH4. For LiAlH4 doped with 1 wt% NiCo@G (LiAlH4-1 wt% NiCo@G), the onset dehydrogenation temperature of LiAlH4 is as low as 43 degrees C, which is 109 degrees C lower than that of pristine LiAlH4. 7.3 wt% of hydrogen can be released from LiAlH4-1 wt% NiCo@G at 150 degrees C within 60 min. The activation energies of LiAlH4 dehydrogenation are extremely reduced by 1 wt% NiCo@G doping.