Molten salt-assisted synthesis of bulk CoOOH as a water oxidation catalyst

• 来源期刊: 能源化学
• 年，卷（期）: 2020,（3）
• 页码范围: 5-10
• 页数: 6页
• 语种: 英文

摘要

Different sizes of layered CoOOH were synthesized by the molten-salt-assisted method at different temperatures.X-ray diffraction and scanning electron microscope studies reveal that CoOOH grew at (003) with increasing temperature,and its size can reach dozens of microns.X-ray absorption near edge structure and XPS studies demonstrate that the Co valence state of CoOOH-750 is trivalent,and X-ray Absorption Fine Structure shows that it had a higher symmetry and lower disorder degree,indicating that CoOOH-750 has higher crystallinity and Co3+.The results of electrochemical tests show that CoOOH-750 exhibited the best oxygen-evolution-reaction (OER) catalytic activity.