Novel core–shell nanoclusters composed of multiple nickel–cobalt-oxyselenide nanowires wrapped with NiCo-LDH nanosheets for high energy density supercapacitors

A novel core–shell nanocluster NCOSe/Ni 2 Co 1 -LDH was constructed with excellent electrochemical properties. Moreover, the assembled HSC achieves an extremely high energy density of 89.7 Wh kg −1 at a power density of 800 W kg −1 .