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Amorphous strontium ruthenate film composite electrode, preparation method and application thereof

A composite electrode, strontium ruthenate technology, applied in electrodes, electrolysis process, electrolysis components and other directions, can solve the problems of crystalline strontium ruthenate film not easy to electrocatalyze reaction, easily corroded and peeled off during the reaction process, and less active sites, etc. Achieve the effect of promoting electrochemical reaction, facilitating large-scale production and high repeatability

Pending Publication Date: 2022-01-07
YANGTZE DELTA REGION INST OF UNIV OF ELECTRONICS SCI & TECH OF CHINE HUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide an amorphous strontium ruthenate film composite electrode and its preparation method and application, which can solve the problem that the crystalline strontium ruthenate film is not easy to directly participate in the electrocatalytic reaction, is easily corroded and falls off during the reaction process, and has few active sites. lead to problems such as low catalytic activity

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  • Amorphous strontium ruthenate film composite electrode, preparation method and application thereof
  • Amorphous strontium ruthenate film composite electrode, preparation method and application thereof
  • Amorphous strontium ruthenate film composite electrode, preparation method and application thereof

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Embodiment 1

[0047] A preparation method for an amorphous strontium ruthenate thin film composite electrode, comprising the following steps:

[0048] (1) Preparation of strontium ruthenate target

[0049] Use ruthenium oxide and strontium oxide powder with a purity of 99.9% to fully mix and grind according to the molar ratio of ruthenium atoms and strontium atoms 1:1, put them into a mold with a radius and a height of 5 mm, press them into a columnar body, and sinter at a high temperature of 1200 ° C 11h, making a strontium ruthenate target;

[0050] (2) Substrate pretreatment

[0051] Polish the glassy carbon sheet with a size of 10mm×10mm smooth with alumina polishing powder with a diameter of 50nm, then ultrasonically clean the glassy carbon sheet with acetone, absolute ethanol and deionized water for 10min respectively, and blow dry with a nitrogen gun after ultrasonic cleaning stand-by;

[0052] (3) Preparation of composite electrodes

[0053] Place the processed glassy carbon she...

Embodiment 2

[0060] A preparation method for an amorphous strontium ruthenate thin film composite electrode, comprising the following steps:

[0061] (1) Preparation of strontium ruthenate target

[0062] Use ruthenium oxide and strontium oxide powder with a purity of 99.9% to fully mix and grind according to the molar ratio of ruthenium atoms and strontium atoms 1:1, put them into a mold with a radius and a height of 5mm, press them into a columnar body, and sinter at a high temperature of 1100°C 10h, make a strontium ruthenate target;

[0063] (2) Substrate pretreatment

[0064] Polish the glassy carbon sheet with a size of 10mm×10mm smooth with alumina polishing powder with a diameter of 20nm, then ultrasonically clean the glassy carbon sheet with acetone, absolute ethanol and deionized water for 15min respectively, and blow dry with a nitrogen gun after ultrasonic cleaning stand-by;

[0065] (3) Preparation of composite electrodes

[0066] Place the processed glassy carbon sheet an...

Embodiment 3

[0070] A preparation method for an amorphous strontium ruthenate thin film composite electrode, comprising the following steps:

[0071] (1) Preparation of strontium ruthenate target

[0072] Use ruthenium oxide and strontium oxide powders with a purity of 99.9% to fully mix and grind them according to the molar ratio of ruthenium atoms and strontium atoms 1:1, put them into a mold with a radius and height of 5mm, press them into a columnar body, and sinter at a high temperature of 1300°C 12h, make a strontium ruthenate target;

[0073] (2) Substrate pretreatment

[0074] Use alumina polishing powder with a diameter of 100nm to polish the glassy carbon sheet with a size of 10mm×10mm smooth, and then ultrasonically clean the glassy carbon sheet with acetone, absolute ethanol and deionized water for 20min respectively, and blow dry with a nitrogen gun after ultrasonic cleaning stand-by;

[0075] (3) Preparation of composite electrodes

[0076] Place the processed glassy carb...

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Abstract

The invention discloses an amorphous strontium ruthenate film composite electrode, a preparation method and application thereof. The preparation method comprises the following steps: fully grinding a glassy carbon substrate by using aluminum oxide polishing powder, cleaning by using ultrasonic waves, and blow-drying by using inert gas; and fixing on a sample table of a pulse laser deposition system, pre-burning strontium ruthenate serving as a target material under the conditions of constant oxygen partial pressure and constant laser energy density, then taking down a baffle plate for deposition, and taking out a sample in a nitrogen atmosphere to obtain the strontium ruthenate film composite electrode. According to the invention, amorphous strontium ruthenate is deposited and grown on a glassy carbon substrate through laser pulses, so that the obtained electrode material is high in binding force and good in stability; when the amorphous strontium ruthenate film composite electrode is applied to an electrocatalytic water electrolysis oxygen evolution reaction system, the water electrolysis oxygen evolution reaction can be effectively catalyzed and promoted; and the results show that the amorphous structure engineering can become an effective and general strategy for designing a high-performance catalyst applied to the next generation of electrolysis water oxygen evolution reaction.

Description

technical field [0001] The invention relates to the technical field of composite electrode preparation, in particular to an amorphous strontium ruthenate thin film composite electrode and its preparation method and application. Background technique [0002] In today's society, due to the excessive exploitation of fossil energy and the deteriorating ecological environment, it is urgent to develop new clean energy. Electrochemical reactions are a simple way to efficiently deliver and store electrical energy through chemical bonds, and energy can be stored by electrochemically splitting water to form hydrogen and oxygen. The potential of electrolyzed water is huge, and energy storage by electrolyzed water has become an important development trend. The purity of gas produced by electrolyzed water is almost 100%, and it is non-toxic and pollution-free. But even with state-of-the-art catalysts, oxygen electrocatalysis severely limits the energy efficiency and rate capability of e...

Claims

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Application Information

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IPC IPC(8): C25B11/065C25B11/075C25B1/04
CPCC25B11/065C25B11/075C25B1/04Y02E60/36
Inventor 乔梁陈凯丰王勇
Owner YANGTZE DELTA REGION INST OF UNIV OF ELECTRONICS SCI & TECH OF CHINE HUZHOU
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