<p>Electrochemically obtained NiMo coatings on pressed nickel foam (NF), prepared by a fast and inexpensive method, demonstrate that the molybdenum content is of great importance for the operation of the supercapacitor. Electrodes with elevated Mo content of 19 wt.% exhibit augmented discharge capacitance and enhanced pseudocapacitive behavior, demonstrating improved retention during prolonged cycling. The reduced Mo content of 13 wt.% results in diminished capacitance, attributable to the presence of structural defects. The combination of NF pressing and electrodeposition facilitates the fabrication of thin, active electrodes with potential for utilization in supercapacitor modules. The findings presented herein provide a foundation for the development of systems that exhibit enhanced adhesion and augmented specific capacitance.</p> Graphical abstract <p></p>

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Nickel-molybdenum coatings prepared via an electrodeposition method for hybrid supercapacitors

  • L. Soserov,
  • V. Bachvarov,
  • R. Rashkov,
  • M. Arnaudova,
  • E. Lefterova,
  • A. Stoyanova

摘要

Electrochemically obtained NiMo coatings on pressed nickel foam (NF), prepared by a fast and inexpensive method, demonstrate that the molybdenum content is of great importance for the operation of the supercapacitor. Electrodes with elevated Mo content of 19 wt.% exhibit augmented discharge capacitance and enhanced pseudocapacitive behavior, demonstrating improved retention during prolonged cycling. The reduced Mo content of 13 wt.% results in diminished capacitance, attributable to the presence of structural defects. The combination of NF pressing and electrodeposition facilitates the fabrication of thin, active electrodes with potential for utilization in supercapacitor modules. The findings presented herein provide a foundation for the development of systems that exhibit enhanced adhesion and augmented specific capacitance.

Graphical abstract