Abstract
A highly dispersed platinum nanoparticle–graphene nanosheet (PtNP–GNS) hybrid colloidal solution was prepared by liquid phase pulsed laser ablation. PtNP–GNS hybrids as air cathode delivered a steady discharge capacity of around 4820mAh/g at the current density of 70mA/g. High electrocatalytic activity of PtNP–GNS hybrids for both discharge and charge processes as air electrode made graphene composites a potential application for Li-air battery.
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