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A kind of hydrogen evolution electrode preparation method of transition metal chalcogenide

A transition metal chalcogenide and hydrogen evolution electrode technology, applied in electrodes, electrolytic coatings, electrophoretic plating, etc., can solve the problems of cumbersome electrode preparation process, inconvenient promotion, etc., and achieve the effect of conventional equipment requirements, easy control, and simple preparation process.

Active Publication Date: 2017-04-26
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, they all have certain limitations, especially the cumbersome electrode preparation process, which is not convenient for industrial promotion.

Method used

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  • A kind of hydrogen evolution electrode preparation method of transition metal chalcogenide
  • A kind of hydrogen evolution electrode preparation method of transition metal chalcogenide
  • A kind of hydrogen evolution electrode preparation method of transition metal chalcogenide

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Weigh 0.3g of lithium hydroxide and dissolve it in 30ml of ethylene glycol, then add 0.2g of block molybdenum disulfide into it, stir evenly, put it into the reaction kettle, react at 220 degrees Celsius for 24 hours, and wait for the reaction kettle to cool down naturally After reaching room temperature, it was washed several times with acetone and alcohol in sequence, and the lithiated molybdenum disulfide was obtained by suction filtration. Place the lithiated molybdenum disulfide in deionized water, wait for the complete reaction between the lithiated molybdenum disulfide and water, let it stand for 24 hours, suction filter, and vacuum freeze-dry to obtain molybdenum disulfide nanosheets.

[0047] Weigh 0.1g molybdenum disulfide nanosheets and disperse them in the mixed solution of 100ml deionized water and dehydrated ethanol (V deionized water: V dehydrated ethanol=1:3, V deionized water: V dehydrated alcohol=2: 2. In V deionized water: V absolute ethanol = 3:1), a...

Embodiment 2

[0051] Weigh 0.3g of lithium hydroxide and dissolve it in 30ml of ethylene glycol, then add 0.2g of block molybdenum disulfide into it, stir evenly, put it into the reaction kettle, react at 220 degrees Celsius for 24 hours, and wait for the reaction kettle to cool down naturally After reaching room temperature, it was washed several times with acetone and alcohol in sequence, and the lithiated molybdenum disulfide was obtained by suction filtration. Place the lithiated molybdenum disulfide in deionized water, wait for the complete reaction between the lithiated molybdenum disulfide and water, let it stand for 24 hours, suction filter, and vacuum freeze-dry to obtain molybdenum disulfide nanosheets.

[0052] Weigh 0.1g molybdenum disulfide nanosheets and disperse them in a mixed solution of 100ml deionized water and absolute ethanol (V deionized water:V absolute ethanol=2:2) to prepare molybdenum disulfide with a mass concentration of 1mg / mL Suspension of molybdenum nanosheets...

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Abstract

The invention discloses a method for preparing a hydrogen evolution electrode of a transition metal chalcogenide compound. The method comprises the following steps: dispersing a two-dimensional transition metal chalcogenide compound nanosheet into a mixed solution of water and absolute ethyl alcohol, and preparing 0.01-5g / L transition metal chalcogenide compound nanosheet suspension; depositing the nanosheet suspension on carbon cloth by virtue of electrophoresis; connecting the negative pole of a direct current power supply in the electrophoresis process by adopting a stainless steel flat plate, and connecting the carbon cloth with the positive pole of the direct current power supply, wherein the voltage between the two electrodes is 50-200V, and the distance is 0.3-2cm; drying the carbon cloth treated by electrophoresis in the step (2) at the temperature of 55-70 DEG C for 12-24 hours, calcining at the temperature of 140-160 DEG C for 0.5-5 hours, thereby obtaining the hydrogen evolution electrode material. The method disclosed by the invention is simple, feasible and low in production cost, can be used for industrial electro-catalysis hydrogen production and can be widely applied to various catalytic hydrogen evolution fields, such as solar electrolysis water hydrogen production.

Description

technical field [0001] The invention relates to a preparation method of a hydrogen evolution electrode with high catalytic activity of a two-dimensional transition metal chalcogenide. Background technique [0002] Due to energy demand and environmental pollution, we urgently need to find an efficient, clean and abundant sustainable energy. Hydrogen energy is considered to be one of the most promising energy materials in the future due to its high energy density (143KJ / g) and the fact that it does not produce carbon dioxide during combustion. At present, there are many ways to produce hydrogen, among which hydrogen production by electrolysis of water has attracted much attention due to its simple equipment, no pollution, and high product purity. In the process of electrocatalysis, the commonly used catalyst is platinum-based noble metal catalyst, but this kind of catalyst is expensive and the reserves are scarce, which is not conducive to large-scale industrial production. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/14C25D13/02C25D13/16C25B1/04
CPCY02E60/36
Inventor 刘韵丹祁祥钟建新
Owner XIANGTAN UNIV