Sono-electrolysis: A look into the distinguished effects of direct and indirect sonication at high frequency ultrasounds (490 kHz).

ABSTRACT: This study investigates the impact of direct and indirect high-frequency (490 kHz) ultrasonication on alkaline water electrolysis for hydrogen production. Calorimetric analysis reveal that direct sonication transmits 54.17 W of acoustic power, corresponding to an efficiency of 77.39 %, whereas indirect configuration achieves substantially lower efficiencies. Hydrogen quantification shows that conventional electrolysis alone produces 0.288 mM H₂ in 60 min (0.08 mM/s), indirect sono-electrolysis improves yields modestly by 3-6 %, while direct sono-electrolysis reaches 0.777 mM in 60 min, representing a 170 % enhancement. This improvement stems from both sonolytic hydrogen generation (0.448 mM) and electrochemical synergy (0.034 mM). Electrochemical characterizations demonstrate en

SUBMITTER: Kerboua K 

PROVIDER: S-EPMC12769851 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature