铁镍磷化物电极材料的制备及电催化析氢性能  

Preparation and Electrocatalytic Hydrogen Evolution Performance of Iron-nickel Phosphide Electrode

作　　者：邹义成 李生娟[1] ZOU Yicheng;LI Shengjuan(School of Materials Science and Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学材料科学与工程学院

出　　处：《有色金属材料与工程》2019年第4期42-47,共6页Nonferrous Metal Materials and Engineering

基　　金：国家自然科学基金资助项目(51402192)

摘　　要：为了解决电解水析氢过程中所用贵金属材料的高昂成本问题,采用水热-低温磷化法制备了一种低廉、环保、高效的析氢催化剂FexNi1-x-P。与传统制备方法比较,该方法在水热合成前驱体过程中,利用镍盐和铁盐与无水乙醇发生氧化还原反应,生成的OH^-可以沉淀金属离子,随后前驱体与NaH2PO2低温磷化制得FexNi1-x-P。通过研究发现,Fe0.5Ni0.5-P电极材料表现出优异的催化活性。在1.0mol·L^-1KOH溶液中,电流密度为10mA·cm^-2时,电极Fe0.5Ni0.5-P需要的过电位仅为113mV,1000圈循环伏安测试后,极化曲线无明显衰减。提供了一种制备FexNi1-x-P的简便方法,为开发清洁能源系统的环境友好型催化剂提供了新思路。In order to solve the high cost of precious metal materials used in the process of hydrogen evolution reaction,a kind of iron-nickel phosphide (FexNi1-x-P) with low-cost,environmental protection and high-efficiency catalysts were prepared by hydrothermal-low temperature phosphating method. Compared with traditional preparation method,the redoxed reactions of nickel salt and iron salt with ethanol were used during hydrothermal synthesizing the precursors in the method.The generated OH^-could be used to precipitate metal ions.Subsequently,FexNi1-x-P was synthesized by low temperature phosphating of precursor and NaH2PO2.It is found that Fe0.5Ni0.5-P electrode material shows excellent catalytic activity.The over potential of Fe0.5Ni0.5-P electrode is only 113 mV in 1.0 mol·L^-1 KOH solution under the current density of 10 mA·cm^-2.After 1 000 cycles of cyclic voltammetry,the polarization curve does not show obvious attenuation.The method for preparing FexNi1-x-P is convenient,which provides a new idea for developing environmentally friendly catalysts for clean energy system.

关 键 词：水热-低温磷化法 铁镍磷化物 析氢反应 电催化剂 

分 类 号：TQ151.1[化学工程—电化学工业]