Hybrid energy storage using nitrogen-doped graphene and layered-MXene (Ti3C2) for stable high-rate supercapacitors

•One-step electrochemical exfoliation of highly conductive multi-doped graphene.•Hybrid design of exfoliated graphene and Ti3C2 MXene resulted superior performance.•Ultra stable performance with ~10% loss of capacitance over three days of cycling.•0.5% loss in coulombic efficiency after 25,000 cycle...

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