19
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: not found
      • Article: not found

      Strongly Anisotropic Thermal Conductivity of Free-Standing Reduced Graphene Oxide Films Annealed at High Temperature

      Read this article at

      ScienceOpenPublisher
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Related collections

          Most cited references46

          • Record: found
          • Abstract: found
          • Article: not found

          Preparation and characterization of graphene oxide paper.

          Free-standing paper-like or foil-like materials are an integral part of our technological society. Their uses include protective layers, chemical filters, components of electrical batteries or supercapacitors, adhesive layers, electronic or optoelectronic components, and molecular storage. Inorganic 'paper-like' materials based on nanoscale components such as exfoliated vermiculite or mica platelets have been intensively studied and commercialized as protective coatings, high-temperature binders, dielectric barriers and gas-impermeable membranes. Carbon-based flexible graphite foils composed of stacked platelets of expanded graphite have long been used in packing and gasketing applications because of their chemical resistivity against most media, superior sealability over a wide temperature range, and impermeability to fluids. The discovery of carbon nanotubes brought about bucky paper, which displays excellent mechanical and electrical properties that make it potentially suitable for fuel cell and structural composite applications. Here we report the preparation and characterization of graphene oxide paper, a free-standing carbon-based membrane material made by flow-directed assembly of individual graphene oxide sheets. This new material outperforms many other paper-like materials in stiffness and strength. Its combination of macroscopic flexibility and stiffness is a result of a unique interlocking-tile arrangement of the nanoscale graphene oxide sheets.
            Bookmark
            • Record: found
            • Abstract: not found
            • Article: not found

            Lower limit to the thermal conductivity of disordered crystals

              Bookmark
              • Record: found
              • Abstract: found
              • Article: not found

              Two-dimensional phonon transport in supported graphene.

              The reported thermal conductivity (kappa) of suspended graphene, 3000 to 5000 watts per meter per kelvin, exceeds that of diamond and graphite. Thus, graphene can be useful in solving heat dissipation problems such as those in nanoelectronics. However, contact with a substrate could affect the thermal transport properties of graphene. Here, we show experimentally that kappa of monolayer graphene exfoliated on a silicon dioxide support is still as high as about 600 watts per meter per kelvin near room temperature, exceeding those of metals such as copper. It is lower than that of suspended graphene because of phonons leaking across the graphene-support interface and strong interface-scattering of flexural modes, which make a large contribution to kappa in suspended graphene according to a theoretical calculation.
                Bookmark

                Author and article information

                Journal
                Advanced Functional Materials
                Adv. Funct. Mater.
                Wiley
                1616301X
                August 2015
                August 2015
                June 25 2015
                : 25
                : 29
                : 4664-4672
                Affiliations
                [1 ]Nano-Device Laboratory (NDL) and Phonon Optimized Engineered Materials (POEM) Center; University of California - Riverside; Riverside CA 92521 USA
                [2 ]Graphenea, Inc.; 1 Broadway Cambridge MA 02142 USA
                [3 ]Department of Physics and Engineering; Moldova State University; Chisinau MD 2009 Republic of Moldova
                Article
                10.1002/adfm.201501429
                981d9e94-ccff-4551-bf08-a11ba8319721
                © 2015

                http://doi.wiley.com/10.1002/tdm_license_1.1

                History

                Comments

                Comment on this article