Title

Novel composite graphene/platinum electro-catalytic electrodes prepared by electrophoretic deposition from colloidal solutions

RIS ID

47293

Publication Details

Chartarrayawadee, W, Moulton, SE, Li, D, Too, CO & Wallace, GG, (2012), Novel composite graphene/platinum electro-catalytic electrodes prepared by electrophoretic deposition from colloidal solutions, Electrochimica Acta, 60, pp. 213-223.

Abstract

Graphene, platinum nanoparticles, and the composite of graphene with platinum nanoparticles have been synthesized to make them amenable to efficient electrophoretic deposition (EPD) onto indium-tin oxide (ITO) coated glass substrates to produce graphene-platinum electro-catalytic electrodes. We employed two approaches to form these electrodes, namely sequential layer-by-layer (LbL) EPD from colloidal solutions containing microscale graphene sheets and nanoscale Pt particles, and a single-step EPD from a colloidal solution containing graphene:Pt composite nanoparticles. These electrodes demonstrated electro-catalytic activity in the I /I/3 redox system and for hydrogen generation from sulfuric acid. The electrode prepared from the colloidal solution of graphene:Pt composite nanoparticles showed superior electro-catalytic performance over the layer-by-layer electrode. These novel electrodes hold promise in applications such as dye-sensitized solar cells (DSSC) and hydrogen generation from acid.

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Link to publisher version (DOI)

http://dx.doi.org/10.1016/j.electacta.2011.11.058