| Electrodeposition of 3D cuprous (Cu2O) and cupric (CuO) oxide foam as highly active electrocatalysts for hydrogen evolution reaction |
| Paper ID : 1241-UFGNSM-FULL |
| Authors: |
|
nastaran farahbakhsh1, Sohrab Sanjabi *2 1Iran, Tehran, western fatemi street,235 2Tarbiat Modares University |
| Abstract: |
| Cuprous (Cu2O) and cupric (CuO) oxide foam without any surfactant at room temperature and in a furnace at a temperature of 500°C. was successfully electrodeposited on stainless steel (AISI 304) substrates respectively to form 3D copper oxide foam. For electrodeposition of copper oxide foam was used Copper sulfate solution (CuSO4.5 H2O) with sulfuric acid (H2SO4). A Comparison between these two oxides of copper, offer an excellent electrocatalytic activity for the electrochemical hydrogen evolution reaction (HER) in acidic media. X-ray diffraction (XRD) confirms that Cu2O foam is composed of Cu and Cu2O although CuO foam was completely oxidized. The structure and nature of the Cuprous (Cu2O) and cupric (CuO) oxide foam were characterized by field emission scanning electron microscope (FE-SEM) and EDX analysis, the results show that foam structure with uniform porosity was composed. The activity for hydrogen evolution reaction (HER) on the obtained foams was assessed by using linear sweep voltammetry (LSV) and tofel polarization curves in acidic media (0.1 M H2SO4). The electrochemical results show that HER on these electrodes takes place by the Volmere-Heyrovsky mechanism. The synthesized CuO foam coating present higher electrocatalytic activity for HER than Cu2O foam coating, and CuO foam was shown excellent electrocatalytic activity for HER than pt/c electrode. |
| Keywords: |
| Cuprous oxide Foam, Cupric Oxide Foam, Electrodeposition, Electrocatalysts, Hydrogen Evolution Reaction |
| Status : Paper Accepted (Oral Presentation) |
