Synthesis of coaxial carbon@NiMoO(4) composite nanofibers for supercapacitor electrodes

This work reports the synthesis of coaxial carbon@NiMoO(4) nanofibers for supercapacitor electrode applications. Thin NiMoO(4) nanosheets are uniformly coated on the conductive electrospun carbon nanofibers by a microwave assisted hydrothermal method to form a hierarchical structure, which increases the porosity as well as the conductivity of the electrode. The thickness of the NiMoO(4) can be easily adjusted by varying the precursor concentrations. The high specific surface area (over 280 m(2) g(−1)) and conductive carbon nanofiber backbone increase the utilization of the active pseudocapacitive NiMoO(4) phase, resulting a high specific capacitance of 1840 F g(−1).