Boosting effect of ultrasonication on the oxygen evolution reaction during zinc electrowinning.

ABSTRACT: In this study, the electrochemical and anodic behaviors of Pb-Ag anodes during ultrasound-assisted zinc electrowinning were meticulously examined. The oxygen evolution reaction (OER) occurring at the Pb-Ag anodes in a 150 g L^-1 aqueous H₂SO₄ solution was studied in the absence (silent) and presence of ultrasonication (40 kHz, 100 % acoustic amplitude). Electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), linear sweep voltammetry (LSV), and zinc electrowinning tests were conducted to analyze the electrochemical behavior of the Pb-Ag anodes during zinc electrowinning. Compared with that under silent conditions, the OER was greatly enhanced under ultrasonic conditions, and the overpotential reduction was found to be 108 mV at 35 °C at a curre

SUBMITTER: Han G 

PROVIDER: S-EPMC11665674 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature