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采用一种简易的方法制备了新型Ni(OH)_2-X/CPE电极,并将其用于电催化氧化甲醛反应.采用扫描电镜和能量散射谱对所制Ni(OH)_2-X/CPE电极进行了表征,并运用循环伏安法、电化学阻抗谱和计时电流法考察了该电极的电化学性能.结果表明,该Ni(OH)_2-X/CPE电极对甲醛氧化表现出高电催化活性,这归功于X具有纳米孔结构和大的比表面积.电子传递系数和催化反应速率常数分别为0.7和6.1×10~4cm~3/(mol·s).该电极对甲醛氧化具有高而稳定的电催化活性,且制备重复性高,有望应用于燃料电池中.
A novel Ni (OH) _2-X / CPE electrode was prepared by a simple method and was used for the electrocatalytic oxidation of formaldehyde. The prepared Ni (OH) _2-X / CPE electrode was characterized by scanning electron microscopy and energy dispersive spectroscopy The electrochemical properties of the electrode were investigated by cyclic voltammetry, electrochemical impedance spectroscopy and chronoamperometry.The results showed that the oxidation of formaldehyde at the Ni (OH) 2-X / CPE electrode showed high electrical The catalytic activity is due to the fact that X has a nanoporous structure and a large specific surface area, and the electron transfer coefficient and the rate constant for the catalytic reaction are 0.7 and 6.1 × 10 4 cm 3 / (mol · s), respectively. The stable electrocatalytic activity, and the preparation of highly reproducible, is expected to be used in fuel cells.