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Preparation method and application of novel hydrogen evolution reaction catalyst Ni2SeS alloy nanorod modified porous carbon sphere composite material

A technology of hydrogen evolution reaction and composite materials, applied in the direction of physical/chemical process catalysts, chemical/physical processes, chemical instruments and methods, etc., can solve the problems of limited reserves and high cost of Pt-based noble metal catalysts, and achieve low industrial cost and abundant reserves , The effect of stable product shape

Pending Publication Date: 2021-08-20
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, Pt-based noble metal catalysts are expensive and have limited reserves

Method used

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  • Preparation method and application of novel hydrogen evolution reaction catalyst Ni2SeS alloy nanorod modified porous carbon sphere composite material
  • Preparation method and application of novel hydrogen evolution reaction catalyst Ni2SeS alloy nanorod modified porous carbon sphere composite material
  • Preparation method and application of novel hydrogen evolution reaction catalyst Ni2SeS alloy nanorod modified porous carbon sphere composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] (1)NiSe 2 Preparation of / PCS

[0069] In the first step, 120 mg of nickel nitrate hexahydrate was weighed and dissolved in 30 mL of deionized water, and stirred at room temperature for 5 min. Pipette 20ml with a pipette gun and transfer to a polytetrafluoroethylene reaction kettle;

[0070] The second step is to accurately weigh 20.0 mg of porous carbon spheres and add them to the above reaction kettle, and disperse them uniformly by ultrasonic;

[0071] In the third step, add 43.58mg of Se powder to the above reaction kettle at room temperature, then inject 2ml of 80% hydrazine hydrate solution, stir for 30min to make it evenly mixed, and observe that the solution changes from green to purple suspension;

[0072] The fourth step is to place the reaction kettle in an electric constant temperature blast drying oven, raise the temperature from room temperature to 180°C at a rate of 2°C / min and keep it warm for 24 hours;

[0073] The fifth step is to wait until the rea...

Embodiment 2

[0085] Modulated NiSe 2 The ratio of nickel salt and carbon spheres in the preparation of / PCS.

[0086] (1)NiSe 2 Preparation of / PCS

[0087] In the first step, 120 mg of nickel nitrate hexahydrate was weighed and dissolved in 30 mL of deionized water, and stirred at room temperature for 5 min. Pipette 20ml with a pipette gun and transfer to a polytetrafluoroethylene reaction kettle;

[0088] The second step is to accurately weigh 80.0mg, 40.0mg, and 20.0mg of porous carbon spheres and add them to the above reaction kettle, and ultrasonically disperse them evenly;

[0089] In the third step, add 43.58mg of Se powder to the above reaction kettle at room temperature, then inject 2ml of 80% hydrazine hydrate solution, stir for 30min to make it evenly mixed, and observe that the solution changes from green to purple suspension;

[0090] The fourth step is to place the reaction kettle in an electric constant temperature blast drying oven, raise the temperature from room tempe...

Embodiment 3

[0099] Adjust Ni 2 NiSe in the preparation of SeS / PCS 2 / The ratio of PCS and sulfur powder.

[0100] (1)NiSe 2 Preparation of / PCS

[0101] In the first step, 120 mg of nickel nitrate hexahydrate was weighed and dissolved in 30 mL of deionized water, and stirred at room temperature for 5 min. Pipette 20ml with a pipette gun and transfer to a polytetrafluoroethylene reaction kettle;

[0102] The second step is to accurately weigh 20.0 mg of porous carbon spheres and add them to the above reaction kettle, and disperse them uniformly by ultrasonic;

[0103] In the third step, add 43.58mg of Se powder to the above reaction kettle at room temperature, then inject 2ml of 80% hydrazine hydrate solution, stir for 30min to make it evenly mixed, and observe that the solution changes from green to purple suspension;

[0104] The fourth step is to place the reaction kettle in an electric constant temperature blast drying oven, raise the temperature from room temperature to 180°C at ...

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Abstract

A hydrogen evolution reaction catalyst comprises Ni2SeS and porous carbon spheres and is a alloy nanorods Ni2SeS modified porous carbon composite material. A preparation method of the hydrogen evolution reaction catalyst comprises the following steps: (1) preparing a NiSe2 / PCS composite material by a hydrothermal synthesis method; and (2) preparing the Ni2SeS / PCS composite material through a chemical vapor deposition method. The hydrogen evolution reaction catalyst is applied to electro-catalytic hydrogen evolution. According to the invention, nickel salt is used as a nickel source, selenium powder is used as a selenium source, and the binary metal sulfide-carbon-based composite material is successfully prepared by a hydrothermal method and vapor deposition combined method. The hydrogen evolution reaction catalyst has excellent electrochemical hydrogen evolution property. The method is simple in process, universal in preparation condition, stable in product morphology, high in purity, convenient and simple in product treatment and suitable for medium-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and relates to a hydrogen evolution reaction catalyst, a preparation method and application thereof. Background technique [0002] In recent years, renewable energy has received more and more attention as an alternative to fossil fuels. Hydrogen, with its high energy density and eco-friendliness, is regarded as an ideal energy carrier for sustainable economic development. Among them, the electrolysis of water is a feasible method for high-purity and large-scale hydrogen production. However, due to the overpotential of the cathode, a large amount of additional electric energy needs to be input in the process of hydrogen production by electrolysis of water, which limits the practical application of hydrogen production by electrolysis of water. [0003] Platinum (Pt), as the most commonly used electrocatalyst in the hydrogen evolution reaction, exhibits a very high exchange current dens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/091C25B1/04
CPCB01J27/0573B01J21/18C25B11/04C25B1/04B01J35/33B01J35/51Y02E60/36
Inventor 温鸣田亚坤张雨熹
Owner TONGJI UNIV
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