High Electrochemical Performance and Photocatalytic Activity in Multicomponent Nanostructured (CuZnNiCoMg)O

Area of Science:

• Materials Science
• Electrochemistry
• Photocatalysis

Background:

• High-entropy oxides (HEOs) offer unique properties for sustainable energy applications.
• Tuning HEO composition and structure is key to optimizing their performance.
• Magnesium (Mg) incorporation is explored for enhancing HEO properties.

Purpose of the Study:

• Investigate the electrochemical and photocatalytic potential of (CuZnNiCoMg)O HEO.
• Examine the role of Mg in improving the properties of (CuZnNiCo)O HEO.
• Compare the performance of (CuZnNiCoMg)O and (CuZnNiCo)O HEOs.

Main Methods:

• Synthesis and characterization of (CuZnNiCoMg)O and (CuZnNiCo)O HEOs.
• Evaluation of electrochemical properties using cyclic voltammetry and specific capacitance measurements.
• Assessment of photocatalytic activity for methylene blue degradation.

Main Results:

• (CuZnNiCoMg)O formed a cubic rocksalt structure at 1173 K, lower than (CuZnNiCo)O (1473 K).
• (CuZnNiCoMg)O electrodes exhibited higher specific capacitance (276.69 Fg⁻¹) than (CuZnNiCo)O (257.88 Fg⁻¹).
• (CuZnNiCoMg)O photocatalyst achieved 81.14% methylene blue degradation, outperforming (CuZnNiCo)O (64.16%).

Conclusions:

• Magnesium incorporation enhances the phase formation and electrochemical performance of HEOs.
• (CuZnNiCoMg)O demonstrates superior multifunctional performance for energy storage and environmental remediation.
• This study highlights the potential of Mg-doped HEOs for sustainable energy and environmental applications.