硼掺杂的NiO修饰玻碳电极电催化氧化甲醇

摘要

采用计时电流法,线性扫描伏安法和安培曲线来研究B-NiO的电催化氧化甲醇过程.研究结果表明,该B-NiO电极具有良好的电催化作用,活性高,稳定性好,在电极上对甲醇的氧化动力学过程为单扩散动力学控制过程.与块状Ni(OH)2相比,硼掺杂的NiO纳米花在碱性介质中电催化氧化甲醇的电流密度提高了50倍.由于B-NiO纳米花出色的电化学性能使其在电氧化甲醇上具有潜在的应用前景.%The boron-doped nickle oxide ( B-NiO) nanoflowers were developed as an electro-catalyst for methanol electro-oxidation in alkaline media which is more than 50 times enhancement in current density compared to bulk nickel hydroxide powers. The positive correlation between the scan rates and the anodic currents implies a single diffusion-controlled kinetic process. The chronoamperometry, line-ar-sweep voltammetric, and amperometric i-t curves were also employed for investigated the B-NiO and the results are also positive. This remarkable electrochemical performance will make B-NiO nanoflowers a promising electrode material for high performance electro-oxidation of methanol.