Randomized trial investigates the effects of entropy and defects on OER performance in advanced catalysts, suggesting a path for efficient hydrogen generation.
Key Points
This research aims to identify the interplay between configurational entropy and defects in optimizing catalysts for oxygen evolution reaction (OER) during green hydrogen production.
Used pentanary FeAlNiCoZn high-entropy layered double hydroxides (HE-LDHs) as a model system.
Developed an 'etching-and-fill' strategy to optimize defect characteristics and configurational entropy.
Assessed electrolysis performance metrics, including overpotential and stability.
Achieved an 81 mV reduction in overpotential at 10 mA/cm².
Decreased operating potential by over 20% at 100 mA/cm².
Sustained stable electrolysis performance for 450 hours without significant degradation.