Preparation and capacitive properties of the core-shell structure carbon aerogel microbeads- nanowhisker-like NiO composites

► NiO/CAMB composite materials with core-shell structure were prepared. ► The optimum amount of NiO in NiO/CAMB composite is 15 wt.%. ► Coating NiO on the CAMB could improve the supercapacitive behaviors of composites.