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NiCo nanoalloy encapsulated in graphene layers for improving hydrogen storage properties of LiAlH4.

ABSTRACT: NiCo nanoalloy (4-6?nm) encapsulated in grapheme layers (NiCo@G) has been prepared by thermolysis of a 3D bimetallic complex CoCo[Ni(EDTA)]2·4H2O 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?°C, which is 109?°C lower than that of pristine LiAlH4. 7.3?wt% of hydrogen can be released from LiAlH4-1?wt% NiCo@G at 150?°C within 60?min. The activation energies of LiAlH4 dehydrogenation are extremely reduced by 1?wt% NiCo@G doping.

SUBMITTER: Jiao C

PROVIDER: S-EPMC4895212 | biostudies-literature | 2016 Jun

REPOSITORIES: biostudies-literature

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NiCo nanoalloy encapsulated in graphene layers for improving hydrogen storage properties of LiAlH4.

Jiao Chengli C Sun Lixian L Xu Fen F Liu Shu-Sheng SS Zhang Jian J Jiang Xia X Yang Lini L

Scientific reports 20160607

NiCo nanoalloy (4-6 nm) encapsulated in grapheme layers (NiCo@G) has been prepared by thermolysis of a 3D bimetallic complex CoCo[Ni(EDTA)]2·4H2O 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 °C, which is 109 °C lower than that o ...[more]

PMID: 27270633

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