A WO3/Ag-B-i oxygen-evolution catalyst for splitting water under mild conditions

作者：Zhao, Qiang; Yu, Zhuobin; Yuan, Wen; Li, Jinping^*

来源：International Journal of Hydrogen Energy, 2012, 37(18): 13249-13255.

DOI：10.1016/j.ijhydene.2012.07.001

• Electrodeposition
• Oxygen-evolving catalyst
• Oxygen evolution rate
• Water splitting
• Energy consumption

A WO3/Ag-B-i based oxygen-evolution catalyst, combining an Ag-B-i catalyst with WO3, has been prepared. This catalyst shows excellent catalytic activity for the splitting of water under mild conditions (near neutral, room temperature, and atmospheric pressure). The WO3/Ag-B-i catalyst shows a high oxygen-evolution rate (30.85 mu mol/h), a high Faradaic efficiency (91.30%), and a low oxygen-evolution overpotential (290 mV). Oxygen evolution and stability performance have been investigated by electrochemical measurements. The WO3/Ag-B-i catalyst has been further characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive spectrometry (EDS), and X-ray photoelectron spectroscopy (XPS).

• 出版日期2012-9
• 单位太原师范学院; 太原理工大学