We report a facile approach to prepare 3D hierarchically porous graphene/nitrogen-rich carbon foams via introducing graphene oxide nanosheets into commercial melamine foam. The assembled solid-state symmetric supercapacitors deliver considerably enhanced energy storage capability and excellent cycling stability.
No takes yet. Share an insight, caveat, or question.
Chen et al. (2017) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: