a kind of iro 2 @ir core-shell structure electrocatalytic oxygen evolution reaction catalyst

A technology of oxygen evolution reaction and core-shell structure, applied in the application field of electrocatalytic materials, can solve the problems of overpotential and high Tafel slope

Inactive Publication Date: 2021-01-29
TAIZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It has been reported that the oxide of noble metal iridium is a catalyst for electrocatalytic oxygen evolution reaction with high catalytic activity and stability, but in the process of electrocatalytic oxygen evolution reaction, the overpotential and Tafel slope are still high

Method used

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  • a kind of iro <sub>2</sub> @ir core-shell structure electrocatalytic oxygen evolution reaction catalyst
  • a kind of iro <sub>2</sub> @ir core-shell structure electrocatalytic oxygen evolution reaction catalyst
  • a kind of iro <sub>2</sub> @ir core-shell structure electrocatalytic oxygen evolution reaction catalyst

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Embodiment Construction

[0024] The implementation of the present invention will be described in detail below in conjunction with specific embodiments.

[0025] The concrete steps of this embodiment are as follows:

[0026] ① Material pretreatment: use IrO2 with a purity of 99.99%, and grind it into powder;

[0027] ② Weighing and dispersion: Weigh 3 grams of IrO2 powder, evenly disperse it on a 1 cm2 glass slide, press it tightly with a cover glass, so that the thickness of the sample is uniform everywhere, and the weighing error is ± 0.005 grams;

[0028] ③Laser treatment: use a nanosecond laser to irradiate the sample, the pulse time is 8-15 nanoseconds, the laser frequency is 10-25 kHz, and the irradiation time is 60 seconds;

[0029] ④Annealing: Anneal at 800 degrees Celsius for 2 hours.

[0030] In order to illustrate the technical effect of the present embodiment, prepare the sample according to the following steps as the comparative example of the present embodiment:

[0031] ① Material pre...

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Abstract

The invention discloses a method for preparing IrO 2 The @Ir core-shell structure electrocatalyzed oxygen evolution reaction catalyst method includes the following steps: material pretreatment; weighing and dispersion; laser treatment; annealing. The invention also discloses a kind of IrO 2 The @Ir core-shell structure electrocatalytic oxygen evolution reaction catalyst is prepared by the above method.

Description

technical field [0001] The invention relates to the application field of electrocatalytic materials, in particular to a catalyst for electrocatalytic oxygen evolution reaction. [0002] technical background [0003] Due to the excessive consumption of natural resources by human beings, especially the excessive exploitation and use of fossil fuels, the shortage of energy resources and the increasingly serious problems of environmental pollution make the development and utilization of sustainable and clean energy increasingly urgent. Among all kinds of clean energy, hydrogen has high energy storage density, high element abundance, and the combustion product is water, making it an ideal energy material. Electrocatalytic water splitting is considered as one of the methods to obtain hydrogen rapidly and efficiently. Electrocatalytic water splitting includes two half-reactions, namely electrocatalytic hydrogen evolution reaction and electrocatalytic oxygen evolution reaction. Amo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/46C25B1/04C25B11/093
CPCB01J23/468B01J35/0033B01J35/0073C25B1/04C25B11/04Y02E60/36
Inventor 王宗鹏林志萍冯尚申钟文武申士杰
Owner TAIZHOU UNIV
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