| Summary: | In this paper, the effects of nickel foam with different thicknesses, as a fluid collector, on the morphology and properties of electrode materials were explored. The Fe<sub>2</sub>O<sub>3</sub> material, which is a common active material for supercapacitor electrodes, was used in combination with MgFe<sub>2</sub>O<sub>4</sub>. This combination resulted in better electrochemical performance and cycle stability for the Fe<sub>2</sub>O<sub>3</sub> material. The synthesis ratio of Fe<sub>2</sub>O<sub>3</sub>/MgFe<sub>2</sub>O<sub>4</sub> materials with the best stability, as reported in a previous article, was selected for this study. The electrode with the best performance was then selected and assembled with activated carbon to form an asymmetric supercapacitor. This supercapacitor exhibited a high specific capacity of 240 C/g, an energy density of 58.75 Wh/kg, and a power density of 200.4 W/kg at a current density of 1 A/g. These findings provide valuable references for the selection of different fluid collectors with electrodes.
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