Hybrid hollow spheres of carbon@CoNiMoO as advanced electrodes for high-performance asymmetric supercapacitors.

Combining pseudocapacitive materials with conductive substrates is an effective approach to enhance the overall performance of electrodes for supercapacitors. Herein, NiMoO4 nanosheets were grown on the surface of porous carbon nanospheres (PCNS) that were derived from cyclodextrin, resulting in PCNS@NiMoO4 hollow nanospheres. Co was further doped into NiMoO4 which gave rise to a composite PCNS@CoxNi1-xMoO4.