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Synthesis of (FeCoNiCuMn)O spinel-high entropy oxide and green carbon from agricultural waste for supercapacitor application. | LitMetric

AI Article Synopsis

  • - The article discusses the preparation of a high-entropy oxide (FeCoNiCuMn)O using liquid state induction melting techniques for use in supercapacitors, highlighting its advantages in terms of electrochemical performance.
  • - This high-entropy oxide features enhanced active sites due to the incorporation of transition metal cations, leading to improved specific power, cyclic stability, and specific capacitance.
  • - The experimental results show that the optimized high-entropy oxide achieved a specific capacitance of 313 F/g at a 5 mV/s current rate, while compared biochar from rice straw exhibits a lower specific capacitance of 232 F/g, demonstrating the superior performance of the high-entropy oxide in supercapacitor applications.

Article Abstract

This article highlights (FeCoNiCuMn)O high-entropy oxide prepared liquid state induction melting techniques for supercapacitor application. Nanostructured high entropy oxides have higher active sites to boost the surface redox process with transition metal cations, such as Fe, Mn, Ni, Co, and Cu, which helps to improve specific power, long-term cyclic stability, and specific capacitance. Melted and ball-milled HEA Nps were annealed to form the high entropy oxide, which uses a positive electrode for supercapacitor application; this results in the highest specific capacitance of 313 F g for a current rate of 5 mV s for the optimized 3 M KOH electrolyte. The biochar prepared through the pyrolysis of rice straw biochar shows a maximum specific capacitance of 232 F g for 5 mV s. The fabricated aqueous devices display the highest specific capacitance of 83 F g at 2 A g with a specific energy of 33.4 W h kg at 1700 W kg.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11500537PMC
http://dx.doi.org/10.1039/d4ra05204hDOI Listing

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