摘要
Cu_(2)O is a promising material for the hydrogen evolution reaction due to the favourable band gap.However,achieving a pure Cu_(2)O phase typically requires high deposition temperatures.To overcome this,electrolyte pH modification was employed to synthesize pure Cu_(2)O at room temperature.A key challenge in room-temperature electrodeposition is the slow deposition rate,which can be improved through photoelectrodeposition.This study explores the synthesis of pure Cu_(2)O via controlled pH photoelectrodeposition for applications of the hydrogen evolution reaction.The results demonstrate that Cu_(2)O films were successfully deposited in an alkaline electrolyte,with the best hydrogen evolution reaction catalytic performance observed at pH 8.This sample exhibited a low onset potential of 64 mV with respect to the standard reversible hydrogen electrode and a Tafel slope of 46 mV/dec.These findings provide the optimization of Cu_(2)O synthesis for hydrogen production.
基金
supported by the Direktorat Penelitian dan Pengabdian Kepada Masyarakat(DPPM),Kementrian Pendidikan Tinggi,Sains,dan Teknologi of the Republic of Indonesia(Grant No.3/UN39.14/C3/DT.05.00/PT-LP/PL/2025).
