Mesoporous NiCo_(2)O_(4) flower-like structures are prepared successfully by a facile solvothermal route.The electrochemical performance of the as-synthesized products as electrode materials for battery-type supercapa...Mesoporous NiCo_(2)O_(4) flower-like structures are prepared successfully by a facile solvothermal route.The electrochemical performance of the as-synthesized products as electrode materials for battery-type supercapacitors is systematically investigated at various concentrations of potassium hydroxide(KOH)aqueous solution by cyclic voltammetry,galvanostatic charge/discharge and electrochemical impedance spectroscopy.NiCo_(2)O_(4) supercapacitor electrode in the 6 M KOH electrolyte delivers high specific capacity(122.5 C g^(−1) at 1 A g^(−1)),excellent rate performance(82.5 C g^(−1) at 10 A g^(−1))and cycling stability(21.7%capacity loss after 6000 cycles at 2 A g^(−1)).The results show that KOH electrolyte at high concentrations plays an important role in improving electrochemical performance of NiCo_(2)O_(4) battery-type supercapacitor electrodes.展开更多
基金supported by initial funding for top level talents of Shenyang University of Technology(004593)Nature Science Fund of Liaoning province(no.20170540671).
文摘Mesoporous NiCo_(2)O_(4) flower-like structures are prepared successfully by a facile solvothermal route.The electrochemical performance of the as-synthesized products as electrode materials for battery-type supercapacitors is systematically investigated at various concentrations of potassium hydroxide(KOH)aqueous solution by cyclic voltammetry,galvanostatic charge/discharge and electrochemical impedance spectroscopy.NiCo_(2)O_(4) supercapacitor electrode in the 6 M KOH electrolyte delivers high specific capacity(122.5 C g^(−1) at 1 A g^(−1)),excellent rate performance(82.5 C g^(−1) at 10 A g^(−1))and cycling stability(21.7%capacity loss after 6000 cycles at 2 A g^(−1)).The results show that KOH electrolyte at high concentrations plays an important role in improving electrochemical performance of NiCo_(2)O_(4) battery-type supercapacitor electrodes.
