Preparation method of multi-component alloy electrode material

Abstract

The invention relates to a preparation method of a multi-component alloy electrode material. The method comprises the following steps: firstly dissolving ammonium molybdate and citric acid in water, then slowly adding thiourea into the solution, fully stirring to obtain a solution system, placing the solution system in a water bath kettle, carrying out water bath heating, and continuously stirring in the heating process; when a solution system in the water bath begins to become turbid, pouring weighed metal powder into the solution system to be continuously heated in the water bath and stirred; when the mixed system continues to become viscous jelly, taking out the jelly, and putting into a muffle furnace to be calcined so as to obtain precursor powder; and loading the precursor powder into a graphite mold, placing the graphite mold into a discharge ion sintering furnace, and sintering to finally obtain the multi-element alloy electrode material. According to the invention, the method is simple in step, low in raw material cost and controllable in process, the obtained finished electrode has stable catalytic activity and good conductivity, machining can be completed to be made into various shapes to a certain extent, and large-scale production is expected to be achieved.

Description

technical field [0001] The invention relates to the technical field of preparation of catalytic materials, in particular to a preparation method of a multi-element alloy electrode material, which belongs to a technical application of powder metallurgy preparation of catalytic materials. Background technique [0002] With the gradual scarcity of oil resources and the increasingly serious environmental pollution, human beings are paying more and more attention to clean and sustainable new energy sources. Among them, hydrogen energy is considered to have broad prospects. But unfortunately, the current industrial hydrogen production is still based on the consumption of fossil fuels such as coal and petroleum. For example, coke oven gas (55-60% hydrogen, 23-27% methane, 6-8% carbon monoxide, etc.) belongs to the production of coke By-products; another example is the reaction of light oil and water at high temperature to produce hydrogen. Obviously, this is not a sustainable pat...

AI Technical Summary

Problems solved by technology

However, at present, high-efficiency catalysts are mainly noble metal materials, which seriously restricts their large-scale industrial applications. It is of great significance to develop low-cost non-precious metal catalysts.

[0003] The main problems of the research on non-precious metal catalysts at home and abroad can be summarized as follows: 1. Poor electrical conductivity

The catalysts prepared in the laboratory are mainly powders, lacking electric current collectors, and it is difficult to give full play to the catalytic performance of the materials

And the performance obtained is only small-scale performance, but if it is applied to engineering, its large-scale catalytic effect cannot be quantified purely based on small-scale calculations; 2. Small-scale

The catalysts prepared in the laboratory are mainly in small batches, the process is fine and complex, and the dominant phase such as 1T phase is less disturbed by external conditions, but its stability is difficult to guarantee in engineering production; 3. Poor mechanical strength

Although there are currently researches on self-supporting electrodes, the carriers used are carbon materials or flexible conductive materials, which have poor mechanical strength, are not conducive to handling and processing, and are not suitable for engineering production.

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