泡沫镍载 NiCO2O4电极的制备及其催化 H2O2电氧化的性能
收稿日期: 2018-09-21
修回日期: 2019-02-19
网络出版日期: 2019-02-19
基金资助
国家大学生创新训练项目;国家自然科学基金项目(51572052)
Preparation and Electrocatalytic Performance of NiCo2O4/Ni Foam for Hydrogen Peroxide Electrooxidation
Received date: 2018-09-21
Revised date: 2019-02-19
Online published: 2019-02-19
本文以水热法结合热处理法原位制备了泡沫镍载 NiCo2O4纳米线电极,使用XRD、SEM和TEM对合成的 NiCo2O4纳米线进行了表征,NiCo2O4纳米线直径约80 nm,长度约 3 ~ 5 μm. 使用循环伏安和计时电流法测试了泡沫镍载NiCo2O4纳米线催化H2O2的电氧化性能,结果表明泡沫镍载NiCo2O4纳米线对H2O2电氧化有着优良的催化活性、稳定性和传质性能,在0.3 V电位下0.4 mol·L -1 H2O2和2 mol·L -1 NaOH溶液中氧化电流可达380 mA·cm -2.
关键词： H2O2电氧化; 水热法; 泡沫镍; NiCo2O4纳米线
陈维伟 , 张飞凡 , 杜佳亮 , 王毅 , 赵春林 , 朱凯 , 曹殿学 , 王贵领 . 泡沫镍载 NiCO2O4电极的制备及其催化 H2O2电氧化的性能[J]. 电化学, 2020 , 26(1) : 96 -102 . DOI: 10.13208/j.electrochem.180921
The electrodes of Ni foam supported NiCo2O4 nanowires were prepared by hydrothermal method, followed by a thermal treatment in air, and were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). It was found that the NiCo2O4 nanowires had a diameter of about 50 nm with a length up to 3 ~ 5 μm. The catalytic performances of the Ni foam supported NiCo2O4 nanowires for H2O2 electrooxidation were studied by cyclic voltammetry and chronoamperometry. The results show that the Ni foam supported NiCo2O4 nanowires electrode exhibited superior activity, stability, and mass transport property for H2O2 electrooxidation. A current density of 380 mA·cm -2 was achieved at 0.3 V in 0.4 mol·L -1 H2O2 and 2 mol·L -1 NaOH at room temperature.
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