Prospects of MXenes/graphene nanocomposites for advanced supercapacitor applications

•Fabrication of MXenes/graphene nanomaterials electrode materials have been outlined.•Correlation between their morphology and electrochemical performances highlighted.•MXenes/graphene nanomaterials for stretchable and wearable electronics are emphasized.•Merits/challenges of these systems regarding charge storage capabilities delineated.•Future prospect of these systems in energy storage applications are summarized.