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A kind of electrocatalytic material and preparation method thereof

An electrocatalytic material and electrocatalytic technology, applied in the coating process of metal materials, electrodes, manufacturing tools, etc., can solve the problems of catalyst shedding, increase the complexity of electrolyzer components, etc., achieve interface optimization, and stabilize electrocatalytic hydrogen production activity , the effect of convenient operation

Active Publication Date: 2022-05-24
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The cathode catalyst and the anode catalyst are usually coated on both sides of the proton exchange membrane with a binder, but the material of this loading method is prone to catalyst shedding after a long-term test
Second, the conductive current collector and electrocatalyst are composed of two parts, which increases the complexity of the electrolyzer components

Method used

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  • A kind of electrocatalytic material and preparation method thereof
  • A kind of electrocatalytic material and preparation method thereof
  • A kind of electrocatalytic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] use figure 1 The schematic process flow diagram shown is to prepare the noble metal-miscible titanium dioxide multistage electrocatalytic material.

[0046] The prepared 2mM chloroauric acid solution was added to the reactor, and the 1mm-thick titanium target was immersed in it. Then, on the laser processing table, the optical path of the pulsed laser beam was adjusted to focus the laser beam on the titanium target. Set the laser pulse frequency to 20kHz, the wavelength to 1064nm, the energy to 10W, and the scan speed to be 200mm / s. Turn on the laser to etch the titanium target. After the laser etching is completed, the electrode material is washed twice with water and with alcohol, and vacuum dried to obtain a noble metal-mixed-phase titanium dioxide multi-stage electrocatalytic material. The obtained material is rutile and anatase mixed phase titanium dioxide, which can be proved by XRD spectrum ( figure 2 ). The size of the hole on the front side of the electrod...

Embodiment 2

[0048] The preparation method is the same as in Example 1, except that the thickness of the titanium target is 0.02 mm, the precious metal solution is 1 mM chloroplatinic acid solution, the laser pulse frequency is 5 kHz, the energy is 1 W, and the scanning speed is 1000 mm / s.

Embodiment 3

[0050] The preparation method is the same as that in Example 1, except that the thickness of the titanium target is 0.1 mm, the precious metal solution is 10 mM ruthenium chloride solution, the laser pulse frequency is set to 10 kHz, the energy is 5 W, and the scanning speed is 600 mm / s.

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Abstract

The invention discloses an electrocatalytic material and a preparation method thereof. The method is as follows: taking a metal sheet as a base, immersing the base in a metal solution, turning on a laser to etch the base, and obtaining an electrocatalytic material after the etching is completed. The electrocatalytic material for electrocatalytic synthesis of ammonia can be prepared by using the present invention: noble metal-mixed-phase titanium dioxide multi-stage electrocatalytic material; the multifunctional integrated electrocatalytic material for electrocatalytic hydrogen production can also be prepared. The noble metal-mixed-phase titanium dioxide multi-stage electrocatalytic ammonia synthesis material prepared by the invention can realize the optimization of the gas-liquid-solid three-phase reaction interface and the anchor loading of the dominant active component through the laser micromachining process in one step, and the effect of being used in the electrocatalytic ammonia synthesis is remarkable . The multifunctional integrated electrocatalytic material prepared by the present invention has the ability of solution circulation, gas diffusion, and current collection and excellent and stable electrocatalytic hydrogen production activity at the same time.

Description

technical field [0001] The invention relates to the technical field of electrocatalytic materials, in particular to an electrocatalytic material and a preparation method thereof. Background technique [0002] As one of the most important chemical products, ammonia (NH 3 ) plays an indispensable role in the development of the national economy. The birth of the Haber-Bosch ammonia synthesis method has enabled mankind to successfully achieve "to ask for bread from the air". However, the Haber-Bosch process has harsh reaction conditions, huge energy consumption, and a large amount of carbon dioxide is released during the preparation of raw material hydrogen, causing environmental pollution. Therefore, scientific researchers have been trying to innovate the catalytic technology of ammonia synthesis, in order to try to reduce the temperature and pressure of the ammonia synthesis reaction and improve the conversion efficiency of synthetic ammonia. Based on the nature of ammonia ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/052C25B11/093C25B11/081C25B11/089C25B1/27C25B1/04C23C18/14B23K26/364
CPCC25B1/00C25B1/04C23C18/143B23K26/364Y02E60/36
Inventor 常彬周伟家袁海凤刘震赵莉莉姜迪
Owner UNIV OF JINAN