Activation method of electrocatalyst, obtained MoS2 activated electrocatalyst and application

A technology of electrocatalyst and activation method, which can be applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., and can solve problems such as poor electrochemical hydrogen evolution catalytic performance.

Active Publication Date: 2021-04-20
武汉捷远科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the present invention aims to propose an activation method for electrocatalysts to solve the problem of...

Method used

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  • Activation method of electrocatalyst, obtained MoS2 activated electrocatalyst and application
  • Activation method of electrocatalyst, obtained MoS2 activated electrocatalyst and application
  • Activation method of electrocatalyst, obtained MoS2 activated electrocatalyst and application

Examples

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Embodiment 1

[0027] A method for activating an electrocatalyst, specifically comprising the following steps:

[0028] 1) Mix 0.25g of sodium molybdate, 0.35g of thiourea and 18ml of deionized water, then stir for 10min with an electromagnetic stirrer until they are evenly mixed;

[0029] 2) Take a 2cm×2cm carbon cloth and clean it with an ultrasonic cleaner for 10 minutes, wherein the ultrasonic power of the ultrasonic cleaner is set to 150W;

[0030] 3) Pour the uniformly stirred solution in step 1) into a high-pressure reactor lined with polytetrafluoroethylene, and then put the cleaned carbon cloth in step 2) into the above solution;

[0031] 4) Heat the high-pressure reaction kettle to 180°C with an electric blast drying oven and keep it for 24 hours to perform hydrothermal treatment on the solution with carbon cloth in step 3). After the heating is completed, let the reaction kettle cool down naturally to room temperature, then open the reactor, take out the sample, and wash the samp...

Embodiment 2

[0034] The difference between this example and Example 1 is that the amount of thiourea in step 1) is 0.3 g.

Embodiment 3

[0036] The difference between this embodiment and embodiment 1 is that the heating temperature of the electric blast drying oven in step 4) is 200°C.

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Abstract

The invention provides an activation method of an electrocatalyst, the obtained MoS2 activated electrocatalyst and application, and the activation method of the electrocatalyst comprises the following steps: 1) putting carbon cloth into a mixed solution composed of sodium molybdate, thiourea and deionized water, and carrying out hydrothermal treatment to obtain a molybdenum disulfide precursor growing on the carbon cloth; 2) performing electrochemical anode treatment on the molybdenum disulfide precursor to obtain the MoS2 activated electrocatalyst. The preparation method is simple and easy to implement, the original structural properties of the layered material are not damaged, and the obtained MoS2 activated electrocatalyst is stable in physical and chemical properties and has good electrocatalytic performance. The layered molybdenum disulfide treated by the optimization method provided by the invention has excellent electro-catalytic performance under an acidic condition, the electro-catalytic performance is not reduced after 50 times of circulation, and the layered molybdenum disulfide has more excellent electro-catalytic performance than a precursor material.

Description

technical field [0001] The invention relates to the technical field of functional materials, in particular to an electrocatalyst activation method, the obtained activated electrocatalyst and its application. Background technique [0002] Hydrogen energy, as a green and renewable energy source, has attracted extensive attention in recent years. Electrochemical hydrogen evolution is a green, energy-saving and efficient hydrogen production method. At present, the electrochemical catalyst with the highest hydrogen production efficiency is platinum-based materials. However, the high cost and durability of platinum-based materials prevent them from being widely used in practical applications. Therefore, there is an urgent need for a low-cost, high-efficiency, and durable non-noble metal hydrogen evolution reaction catalyst to replace noble metal materials. [0003] MoS 2 Due to its edge-exposed active sites and excellent electron mobility, it has great potential in the fields of...

Claims

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Application Information

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IPC IPC(8): B01J37/34B01J37/10B01J27/051C25B1/04C25B11/075
CPCY02E60/36
Inventor 彭祥王鹏
Owner 武汉捷远科技有限公司
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