Hydrothermally synthesized Nickel cobalt oxide for bifunctional electrochemical supercapacitor and nonenzymatic glucose biosensor

Herein, various nickel cobalt oxide nanostructures with different Ni concentrations are prepared via hydrothermal route and then calcination process for electrochemical supercapacitor as well as nonenzymatic glucose biosensor. The electrode synthesized on carbon cloth using Ni0.9Co2.1O4 nanosheet-like morphology showed a maximum 516.51 F g−1 specific capacitance at 10 mV s−1 scan rate and the cyclic stability of 87.7% over 2000 GCD cycles. The electrode prepared with Ni0.3Co2.7O4 on CC offered a linear response from 0 to 0.3 mM glucose concentration and exhibited a maximum of 759.5 µA mM−1 cm−2 glucose sensitivity.