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New graphene paper beats the record in conductivity and strength.

2012 ACS Nano RGONPNanopapers, a new class of man-made materials derived from the latest advances in nanotechnology have a unique potential to be used in a whole bunch of applications from electrical conductors through gas barriers to corrosion- and wear-resistant coatings, attract lots of attention from both theoretical and experimental scientists. This week’s publication at ACS Nano describes the preparation of graphene nanopaper with properties surpassing all other developments in this area. The ultimate tensile strength of 320 MPa could be achieved, which is 50% more than the strength of cast iron (200 MPa). Simultaneously the electrical conductivity of 40’000 S/m was achieved overpassing the conductivity of the best existing graphene-based predecessors by an order of magnitude.

 

Scientists led by James Lee from the Ohio State University had a thorough look at the factors affecting both properties of the graphene-based nanopapers (GNP) before starting their experimental work discovering that success lays in three milestones: correct  reduction of graphene oxide, functionalization of the obtained materials with SO3H groups, assembly and reduction of the nanopaper. The major discovery lays in the right balance of the hydrophobic-hydrophilic properties of the reduced graphene-oxide  “bricks” used during the production of the paper.

More details are available in the freshly published ASAP article of ACS NANO.

Similar articles: Novel luminescent carbon-based materials, New graphene paper beats the record in conductivity and strength

NanoJam, 26.10.2012
Article source: ACS Nano
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