Polyaniline nanostructures with fibrous and granular morphology have been synthesized using a chemical process in presence of surfactants as dopants. The reversible hydrogen sorption characteristics, namely sorption kinetics measurements, were performed on these polyaniline (PANI) nanostructures at high hydrogen pressures and room temperatures. The rapid uptake and release of hydrogen up to >4wt.% was observed in these nanostructures, which may be due to their unique morphologies as explored from microstructural observations.
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