Octahedral-coordinated Co 3 O 4 for water electrolysis in acid

TL;DR - Researchers developed a trigonal Co₃O₄ electrocatalyst with edge-shared octahedral coordination that improves acidic oxygen evolution performance. It combines lower overpotential with reduced cobalt dissolution compared with spinel Co₃O₄.

• Produced via a vacuum-mediated molten-alkali mechanochemical method.
• Features a new trigonal phase rather than the conventional spinel structure.
• Achieves lower overpotential during acidic oxygen evolution.
• Reduces cobalt dissolution, indicating improved catalyst stability.