Abstract
In the present study, we investigated the NiCo2O4/NiO (NCO/NiO) composite nanofibers (NFs) synthesized via a facile electrospinning and solvothermal method as a future electrode material. The synthesized samples are characterized and their electrochemical and gas sensing properties are investigated. The morphology, structural, asymmetric vibrations and elemental compositions in the prepared samples are studied by Field emission scanning electron microscope (FESEM), X-ray diffraction (XRD), Raman spectroscopy, Energy dispersive spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). The prepared NCO/NiO NFs exhibit high specific capacitance (1212 Fg−1) and good cyclic performance (94%), showing promising supercapacitor properties. For NCO/NiO NFs, the continuity of the structure contributes to rapid signal transmission in gas detection. Ammonia gas measurement of NCO/NiO NFs operated at 100 °C showed fast response and recovery times of 17 and 11 s, respectively.
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