Ni-Mo alloy catalytic hydrogen evolution coating preparation method

Abstract

The invention provides a Ni-Mo alloy catalytic hydrogen evolution coating preparation method. A plating solution comprises the following components: 0.15-0.45 mol / L of nickel chloride, 0.1-0.25 mol / L of nickel sulfate, 0.1-0.2 mol / L of sodium sulfate, 0.1-0.3 mol / L of sodium hydrogen phosphate, 0.5-2 mol / L of citric acid, 1-5 g / L of OP-10, 0.1-0.2 g / L of 1,4 butynediol, and 0.1-0.4 mol / L of sodium molybdate; and an electrodeposition technology is characterized in that current density is 3-15 A.dm<-2>, and the plating solution temperature is 20-40 DEG C. The Ni-Mo alloy catalytic hydrogen evolution coating has the characteristics of simple electrode preparation, low cost, uniform coating, and high stability, can effectively reduce the hydrogen overpotential, and has good electrocatalytic activity.

Description

technical field [0001] The invention relates to a preparation method of a Ni-Mo alloy catalytic hydrogen evolution coating. Background technique [0002] The aggravation of the energy crisis has made how to obtain clean energy become a research hotspot. Hydrogen energy is currently the most ideal clean secondary energy source, and the most environmentally friendly way to obtain hydrogen energy is to electrolyze water to produce hydrogen. However, the energy consumption of electrolyzing water to produce hydrogen is relatively high. In order to reduce the hydrogen evolution overpotential and thereby reduce energy consumption, the hydrogen evolution electrode material Research has attracted more and more people's attention. [0003] At present, the electrodes used for catalytic hydrogen evolution in industry mainly include graphite electrodes, stainless steel electrodes, and ruthenium oxide electrodes. The above electrodes have poor catalytic hydrogen evolution activity, high...

AI Technical Summary

Problems solved by technology

The above electrodes have poor catalytic hydrogen evolution activity, high hydrogen evolution overpotential, and huge energy consumption. Therefore, it is of great practical significance to develop a catalytic hydrogen evolution electrode material with high hydrogen evolution catalytic activity, stable performance, simple preparation and low price.

In recent years, it has been reported that hydrogen evolution electrodes with better performance can be obtained by ion plating, ion implantation, ion sputtering and other physical methods, but the above methods are complex in process, expensive in equipment, and low in preparation efficiency, which is not conducive to large-scale production and use.

The hydrogen evolution electrode prepared by electrodeposition has the advantages of simple process, low cost, easy control of product quality, and convenience for large-scale production. However, the electrode material with high hydrogen evolution catalytic activity prepared by electrodeposition has poor stability of plating solution and low cycle life. , poor tolerance and other shortcomings