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Smart Textile Flexible MnCo2O4 Electrodes: Urea Surface Modification for Improved Electrochemical Functionality.

Manesh A Yewale1, Aviraj M Teli2, Sonali A Beknalkar2

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Varying urea content during synthesis creates sheet-like MnCo2O4 nanoparticles with enhanced electrochemical properties. These nanoparticles enable high-performance asymmetric supercapacitors and show excellent electrocatalytic activity for HER and OER.

Keywords:
MnCo2O4 nanoparticlesTEMasymmetric supercapacitorhydrothermalsupercapacitor

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Nanotechnology

Background:

  • Surface microstructure modification is key to enhancing metal oxide nanoparticle performance.
  • Controlling nanoparticle morphology impacts electrochemical properties.

Purpose of the Study:

  • To investigate the effect of urea concentration on MnCo2O4 nanoparticle surface morphology.
  • To evaluate the electrochemical performance of modified MnCo2O4 nanoparticles in supercapacitors and electrocatalysis.

Main Methods:

  • Hydrothermal synthesis of MnCo2O4 nanoparticles with varying urea concentrations.
  • Characterization of nanoparticle morphology and electrochemical evaluation.

Main Results:

  • Increased urea concentration transformed MnCo2O4 from flower-like to sheet-like structures.
  • The modified MnCo2O4 nanoparticles achieved an energy density of 13 Wh/kg in an asymmetric supercapacitor.
  • The MnCo2O4 electrode exhibited low overpotentials for Hydrogen Evolution Reaction (HER) and Oxygen Evolution Reaction (OER).

Conclusions:

  • Urea concentration is a critical factor in tailoring MnCo2O4 nanoparticle morphology and electrochemical performance.
  • Sheet-like MnCo2O4 nanoparticles are promising for advanced energy storage and electrocatalysis applications.