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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
1School of Mechanical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea.
Materials (Basel, Switzerland)
|April 27, 2024
Summary
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.
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.
