用于大电流密度电解水析氧的NiF-NiSe/NF催化电极的制备与性能研究  

Preparation and Performance of NiFe-NiS/NF Catalytic Electrode for Oxygen Evolution by Water Electrolysis at High Current Density

作　　者：凌瑞华 成华婧 卢婉玉 崔景富 左子腾 李凝雪 廖卓然 杨浩 LING Ruihua;CHENG Huajing;LU Wanyu;CUI Jingfu;ZUO Ziteng;LI Ningxue;LIAO Zhuoran;YANG Hao(School of Environmental Ecology and Biological Engineering,Wuhan Institute of Technology,Wuhan 430205,China;School of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen 518055,China)

机构地区：[1]武汉工程大学环境生态与生物工程学院,湖北武汉430205 [2]南方科技大学材料科学与工程系,广东深圳518055

出　　处：《化学与生物工程》2024年第7期24-29,共6页Chemistry & Bioengineering

基　　金：国家自然科学基金重大研究计划培育项目(91963129);深圳市高校稳定支持项目(20231115112954001)。

摘　　要：以原位硫化腐蚀泡沫镍表面得到的NiS/NF为前驱体,通过电沉积NiFe纳米颗粒对其表面进行修饰,制备了NiFe-NiS/NF催化电极,采用SEM、EDS、XRD等对其进行了表征,并对其电化学性能进行了评价。结果表明,在1 mol·L^(-1) KOH电解液中,NiFe-NiS/NF催化电极在电流密度为10 mA·cm^(-2)、1 000 mA·cm^(-2)时的过电位分别为203 mV、350 mV;NiFe-NiS/NF催化电极具有优异的析氧反应(OER)性能,归因于其快的动力学反应速率、小的电荷转移电阻(R_(ct))和大的电化学活性面积的协同作用,此外,NiS薄膜在泡沫镍上的沉积显著增加了NiFe-NiS/NF催化电极的催化活性位点;NiFe-NiS/NF催化电极在10 mA·cm^(-2)的电流密度下测试24 h表现出良好的催化稳定性。Using NiS/NF obtained from in situ vulcanization corrosion of the surface of nickel foam as a precursor,we prepared NiFe-NiS/NF catalytic electrode by electrodeposition of NiFe nanoparticles.Moreover,we characterized the NiFe-NiS/NF catalytic electrode by SEM,EDS,and XRD,and evaluated its electrochemical performance.The results show that the overpotential of NiFe-NiS/NF catalytic electrode in 1 mol·L^(-1) KOH electrolyte is 203 mV and 350 mV at 10 mA·cm^(-2) and 1 000 mA·cm^(-2),respectively.NiFe-NiS/NF catalytic electrode has excellent properties of oxygen evolution reaction(OER),due to the synergistic effect of its fast kinetical reaction,small charge transfer resistance(R_(ct)),and large electrochemical active area.In addition,the deposition of NiS film on nickel foam significantly increases the catalytic active sites of NiFe-NiS/NF catalytic electrode.The NiFe-NiS/NF catalytic electrode shows good catalytic stability when tested at a current density of 10 mA·cm^(-2) for 24 h.

关 键 词：电化学 过渡金属硫化物 析氧反应 硫化 催化剂 

分 类 号：TQ151.1[化学工程—电化学工业]