Facile-synthesized NiCo2O4@MnMoO4 with novel and functional structure for superior performance supercapacitors

摘要: Abstract The optimized structure of composited materials decides the electrochemical performances supercapacitors. Herein, NiCo2O4@MnMoO4 particles with novel and functional were synthesized by two-step hydrothermal method process in this work, which nickel foam (Ni foam) was employed as substrate. In experiment process, NiCo2O4 prepared on Ni then NiCo2O4. According to tests, both micro-particles work have superior including higher specific capacitances than most other researches. At scan rate 5 mA·cm−2, area capacitance electrode is 4.73 F cm−2 (equivalent 1152.4 F·g−1 mass capacitance), while that 16.40 F cm−2 2603.9 F·g−1 capacitance). cycling performance at current density 5 mA·cm−2 measured. After 3000 discharge–charge cycles, remains 112.2% its initial value, 92.1%. asymmetric supercapacitor assembled compounds activated carbon (AC), show high energy 44.16 Wh/kg power 0.8 kW/kg. results composite an excellent candidate for storage devices.