Advanced flower-like Co3O4 with ultrathin nanosheets and 3D rGO aerogels as double ion-buffering reservoirs for asymmetric supercapacitors

The asymmetric supercapacitors of the double “ion-buffering reservoirs” are fabricated with the 3D flower-like DBS-Co3O4 microspheres as positive electrode materials and 3D-rGO aerogels as negative electrode materials with excellent electrochemical performance for energy storage application.522