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<p>In order to investigate the effect of electrochemical double-layer response of (FeCoCrMnNi)<sub>3</sub>O<sub>4</sub> electrode materials in faradic redox reaction pseudocapacitance, (FeCoCrMnNi)<sub>3</sub>O<sub>4</sub>/C composite were obtained by using carbon spheres and (FeCoCrMnNi)<sub>3</sub>O<sub>4</sub> powder with different mass ratios. The carbon spheres resulted in a richer morphological structure of (FeCoCrMnNi)<sub>3</sub>O<sub>4</sub> powder and a further increase in the specific surface area. At the electrochemical testing stage, the synergistic effect of electrochemical double-layer and faradic redox reaction pseudocapacitance energy storage can be observed from the cyclic voltammetry curves, and the specific capacitance of (FeCoCrMnNi)<sub>3</sub>O<sub>4</sub>/C composites is 400 F g<sup>−1</sup> at a current density of 1 A g<sup>−1</sup>, which is higher than that of the single electrochemical double-layer and pseudocapacitive electrode materials, it is shown that the energy storage performance of (FeCoCrMnNi)<sub>3</sub>O<sub>4</sub> powder is significantly enhanced with the synergistic effect of electrochemical double layer and faradic redox reaction pseudocapacitance energy storage.</p>

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Electrochemical synergies between double layer capacitance and faradic redox pseudocapacitance in (FeCoCrMnNi)3O4/C electrode

  • 期刊论文

  • 发表日期：

    2025年4月4日

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  • Jie Feng,
  • Yi Yin,
  • Bi Chen,
  • Juan Zhou,
  • Xia-Yue Yuan,
  • Jun-Hu Liu,
  • Xue-Jing Ma,
  • Wei-Bin Zhang

摘要

In order to investigate the effect of electrochemical double-layer response of (FeCoCrMnNi)3O4 electrode materials in faradic redox reaction pseudocapacitance, (FeCoCrMnNi)3O4/C composite were obtained by using carbon spheres and (FeCoCrMnNi)3O4 powder with different mass ratios. The carbon spheres resulted in a richer morphological structure of (FeCoCrMnNi)3O4 powder and a further increase in the specific surface area. At the electrochemical testing stage, the synergistic effect of electrochemical double-layer and faradic redox reaction pseudocapacitance energy storage can be observed from the cyclic voltammetry curves, and the specific capacitance of (FeCoCrMnNi)3O4/C composites is 400 F g−1 at a current density of 1 A g−1, which is higher than that of the single electrochemical double-layer and pseudocapacitive electrode materials, it is shown that the energy storage performance of (FeCoCrMnNi)3O4 powder is significantly enhanced with the synergistic effect of electrochemical double layer and faradic redox reaction pseudocapacitance energy storage.