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Tailoring graphene in nanoscales for green energies
Last modified: 2014-10-14
Abstract
Nanostructuring and Functionalization of graphene in nanoscales are arts in both chemistry and chemistry that can significantly enhance efficient green energy conversions, which includes solar cells, fuel cells, Li-ion batteries and supercapacitors. In particular, surface functionalization and self-assembly approaches have been explored to construct electrodes with high specific surface, high catalytic activity and unique nanostructure to improve the conversion efficiency while remaining the high conductivity for high power density and high energy density. Self-assembly, nanocomposite, biotechnology and functionalization are used to nanostructure the catalysts possessing not only unique nano-architectures but also smart chemical composition for superior catalytic behaviour. Consequently, the incident photon-to-charge carrier generation efficiency of photovoltaic devices is significantly boosted, the capacity and cycle life of batteries are remarkably increased, direct electrochemistry-based biofuel cells for high power density are enabled and high rate of hydrogen storage is accomplished. The enhancement mechanisms of these functionalized nanostructured catalysts will be discussed for fundamental insights.
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