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

Yanan Chen, Garth C. Egan, Jiayu Wan, Shuze Zhu, Rohit Jiji Jacob, Wenbo Zhou, Jiaqi Dai, Yanbin Wang, Valencia A. Danner, Yonggang Yao, Kun Fu, Yibo Wang, Wenzhong Bao, Teng Li, Michael R. Zachariah () and Liangbing Hu ()
Additional contact information
Yanan Chen: University of Maryland College Park
Garth C. Egan: University of Maryland College Park
Jiayu Wan: University of Maryland College Park
Shuze Zhu: University of Maryland College Park
Rohit Jiji Jacob: University of Maryland College Park
Wenbo Zhou: University of Maryland College Park
Jiaqi Dai: University of Maryland College Park
Yanbin Wang: University of Maryland College Park
Valencia A. Danner: University of Maryland College Park
Yonggang Yao: University of Maryland College Park
Kun Fu: University of Maryland College Park
Yibo Wang: University of Maryland College Park
Wenzhong Bao: University of Maryland College Park
Teng Li: University of Maryland College Park
Michael R. Zachariah: University of Maryland College Park
Liangbing Hu: University of Maryland College Park

Nature Communications, 2016, vol. 7, issue 1, 1-9

Abstract: 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.

Date: 2016
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DOI: 10.1038/ncomms12332

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