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We report the synthesis efficiency of few-layer graphene (FLG) in an externalmagnetic field modulated DC carbon arc in different non-reactive buffer gases.The effects of buffer gases on the anode erosion rate and the cathode deposit(CD) formation rate have been investigated during the synthesis of FLG. Theconstituents of the as-synthesized CDs were investigated using transmissionelectron microscopy, selected area electron diffraction, Raman spectroscopy andX-ray diffraction analysis. A plausible growth mechanism of such FLG ispredicted. The results indicate that, under a parametrically optimizedcondition, an electric-arc of this kind can efficiently generate FLG withrotational stacking faults at a production-rate of few g/min. A guideline forcontrolling the number of layers of such FLG has also been suggested.

Gas phase condensation of few-layer graphene with rotational stacking faults in an electric-arc