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Jang, Ji-Wook
JW Energy Lab
Research Interests
  • Materials Science, Energy

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Fabrication of graphene-based electrode in less than a minute through hybrid microwave annealing

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Title
Fabrication of graphene-based electrode in less than a minute through hybrid microwave annealing
Author
Youn, Duck HyunJang, Ji-WookKim, Jae YoungJang, Jum SukChoi, Sun HeeLee, Jae Sung
Keywords
SENSITIZED SOLAR-CELLS; ACTIVE EDGE SITES; HYDROGEN EVOLUTION; MOS2; OXIDE; NANOPARTICLES; REDUCTION; ELECTROCATALYST; COMPOSITE; BATTERIES
Issue Date
201406
Publisher
NATURE PUBLISHING GROUP
Citation
SCIENTIFIC REPORTS, v.4, no., pp.5492 -
Abstract
Highly efficient and stable MoS 2 nanocrystals on graphene sheets (MoS 2 /GR) are synthesized via a hybrid microwave annealing process. Through only 45 second-irradiation using a household microwave oven equipped with a graphite susceptor, crystallization of MoS 2 and thermal reduction of graphene oxide into graphene are achieved, indicating that our synthetic method is ultrafast and energy-economic. Graphene plays a crucial role as an excellent microwave absorber as well as an ideal support material that mediates the growth of MoS 2 nanocrystals. The formed MoS 2 /GR electrocatalyst exhibits high activity of hydrogen evolution reaction with small onset overpotential of 0.1 V and Tafel slope of 50mV per decade together with an excellent stability in acid media. Thus our hybrid microwave annealing could be an efficient generic method to fabricate various graphene-based hybrid electric materials for broad applications.
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DOI
http://dx.doi.org/10.1038/srep05492
ISSN
2045-2322
Appears in Collections:
ECHE_Journal Papers
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