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Ultra-fast self-assembly and stabilization of reactive nanoparticles in reduced graphene oxide films.

Abstract：

:Nanoparticles hosted in conductive matrices are ubiquitous in electrochemical energy storage, catalysis and energetic devices. However, agglomeration and surface oxidation remain as two major challenges towards their ultimate utility, especially for highly reactive materials. Here we report uniformly distributed nanoparticles with diameters around 10 nm can be self-assembled within a reduced graphene oxide matrix in 10 ms. Microsized particles in reduced graphene oxide are Joule heated to high temperature (∼1,700 K) and rapidly quenched to preserve the resultant nano-architecture. A possible formation mechanism is that microsized particles melt under high temperature, are separated by defects in reduced graphene oxide and self-assemble into nanoparticles on cooling. The ultra-fast manufacturing approach can be applied to a wide range of materials, including aluminium, silicon, tin and so on. One unique application of this technique is the stabilization of aluminium nanoparticles in reduced graphene oxide film, which we demonstrate to have excellent performance as a switchable energetic material.

journal_name

Nat Commun

journal_title

Nature communications

authors

Chen Y,Egan GC,Wan J,Zhu S,Jacob RJ,Zhou W,Dai J,Wang Y,Danner VA,Yao Y,Fu K,Wang Y,Bao W,Li T,Zachariah MR,Hu L

doi

10.1038/ncomms12332

subject

Has Abstract

pub_date

2016-08-12 00:00:00

pages

12332

issn

2041-1723

pii

ncomms12332

journal_volume

7

pub_type

杂志文章

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