The preparation of composite electrode materials is an effective method to improve the low energy density of supercapacitors.MnMoO4 nanosheets were grown on a nickel foam substrate using a hydrothermal method,and then a highly conductive silver nanowire (Ag NW) network was loaded on the vertical nanosheets using multiple solution impregnation to successfully prepare MnMoO4@Ag NW composite electrode materials.The results showed that the specific capacitance value of MnMoO4@Ag NW-0.005 at 1mA/cm2 was 1.543F/cm2 (1234.4F/g),and the capacity retention rate was 93.6% after 3000 charge/discharge cycles,demonstrating excellent cycling stability.The assembled MnMoO4@Ag NW-0.005//AC ASC device provided a high energy density of 42.6Wh/kg at a power density of 1277.8W/kg,with a capacity retention rate of 88.1% after 10000 charge/discharge cycles.The introduction of the highly conductive Ag NW network not only ensured fast electron transport,but also protected the vertical manganese molybdate nanosheets and slowed down the volume expansion of the electrode material during multiple charging and discharging.This study provides new ideas for the design of novel composite electrode materials.
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基金资助
国家自然科学基金(12174173);漳州市自然科学基金项目(ZZ2023J20);福建省产学研联合基金项目(2024H6014)
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