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Preparation method of ag-pi oxygen evolution catalyst membrane material for electrolysis of water

A catalyst membrane, electrolyzed water technology, applied in electrolysis components, electrolysis process, electrodes, etc., can solve the problems of high energy consumption, failed industrial application, low efficiency, etc., to achieve good oxygen evolution performance, easy control, wide pH buffering Effects of Features

Active Publication Date: 2018-09-18
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technology of hydrogen production by electrolysis of water has a long history, but it has not been applied industrially. The main reason is that the traditional technology of hydrogen production by electrolysis of water has high energy consumption and low efficiency.

Method used

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  • Preparation method of ag-pi oxygen evolution catalyst membrane material for electrolysis of water
  • Preparation method of ag-pi oxygen evolution catalyst membrane material for electrolysis of water

Examples

Experimental program
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Effect test

Embodiment 1

[0028] An electrolyzed water Ag-P i A preparation method for an oxygen evolution catalyst membrane material, comprising the steps of:

[0029] (1) Cut the ITO conductive glass with a thickness of 1.8mm and a surface resistance of 8.6±1.0 Ω / sq into slides with a size of 1cm×5cm, and ultrasonicate the cut slides in acetone and ethanol in turn. Wash for 10 minutes, and then use ultrapure water to sonicate for 10 minutes before use.

[0030] (2) Weigh 0.34g of analytically pure silver nitrate solid to prepare 100mL of 0.02mol / L silver nitrate solution.

[0031] (3) Weigh two parts of 0.66g of analytically pure anhydrous trisodium phosphate, put them into the anode and cathode chambers of the H-type electrolytic cell respectively, and add 38mL and 40mL of ultrapure water respectively. Use a pipette to pipette 2mL of 0.02mol / L silver nitrate solution into the anode chamber and mix it evenly.

[0032] (4) Fix the H-type electrolytic cell in a constant temperature water bath, contr...

Embodiment 2

[0034] An electrolyzed water Ag-P i A preparation method for an oxygen evolution catalyst membrane material, comprising the steps of:

[0035] (1) Cut the FTO conductive glass with a thickness of 1.8mm and a surface resistance of ≤10Ω / sq into slides with a size of 1cm×5cm, and clean the cut slides ultrasonically in acetone and absolute ethanol for 5 minutes, then rinse it off with clean water.

[0036] (2) Weigh 0.34g of analytically pure silver nitrate solid to prepare 100mL of 0.02mol / L silver nitrate solution.

[0037] (3) Weigh two parts of 0.66g of analytically pure anhydrous trisodium phosphate, put them into the anode and cathode chambers of the H-type electrolytic cell respectively, and add 38mL and 40mL of ultrapure water respectively. Use a pipette to pipette 2mL of 0.02mol / L silver nitrate solution into the anode chamber and mix it evenly.

[0038] (4) Fix the H-type electrolytic cell in a constant temperature water bath at 25°C, keep the anode and cathode chambe...

Embodiment 3

[0040] An electrolyzed water Ag-P iA preparation method for an oxygen evolution catalyst membrane material, comprising the steps of:

[0041] (1) Cut the ITO conductive glass with a thickness of 0.125mm and a surface resistance of 8.6±1.0 Ω / sq into slides with a size of 1cm×5cm, and ultrasonicate the cut slides in acetone and absolute ethanol in turn. Wash for 5 minutes, then rinse it off with clean water.

[0042] (2) Weigh 0.68g of analytically pure silver nitrate solid to prepare 100mL of 0.04mol / L silver nitrate solution.

[0043] (3) Weigh two parts of 0.66g of analytically pure anhydrous trisodium phosphate, put them into the anode and cathode chambers of the H-type electrolytic cell respectively, and add 38mL and 40mL of ultrapure water respectively. Use a pipette to pipette 2mL of 0.04mol / L silver nitrate solution into the anode chamber and mix it evenly.

[0044] (4) Fix the H-type electrolytic cell in a constant temperature water bath at 25°C, keep the anode and c...

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Abstract

The invention discloses a method for preparing an electrolytic water oxygen evolution catalyst Ag-Pi membrane material at a moderate condition, and particularly relates to a technical scheme for in-situ preparing a catalyst Ag-Pi membrane material by virtue of an electrochemical method under a preparation condition of a normal temperature, normal pressure and weak alkalinity (pH is equal to 12.4) with simplicity in operation and easiness in controlling a reaction process. The Ag-Pi membrane material catalyst of an approximate amorphous state is prepared in situ by virtue of an electrochemical synthetic method under a moderate condition, wherein the in-situ oxygen evolution rate of the Ag-Pi catalyst is 11.1 micro mol / h; for the Ag-Pi oxygen evolution catalyst with passed electric amount of 15C / cm<2>, and when the current density is 1 mA / cm<2>, the needed oxygen evolution overpotential is 457mV. The invention provides a way for in-situ preparing amorphous Ag-based oxygen evolution catalyst membrane material by virtue of an electrochemical deposition method under the moderate condition, so that the research field for preparing the amorphous Ag-based oxygen evolution catalyst membrane material by virtue of the electrochemical deposition method under the moderate condition is developed.

Description

technical field [0001] The invention belongs to the field of inorganic functional materials and electrochemical technology, and relates to the in-situ preparation of electrolytic water oxygen evolution catalyst Ag-P i The method of membrane material, specifically a kind of preparation oxygen evolution catalytic Ag-P by electrochemical method in inorganic salt i Technical scheme of membrane material method. Background technique [0002] With the depletion of fossil energy and the deterioration of the greenhouse effect, the efficient use of natural solar energy, wind energy, tidal energy and other renewable energy has become the focus of global attention. Hydrogen production by electrolysis of water driven by renewable energy can solve the weaknesses of renewable energy such as discontinuity, instability, and climate change, and convert it into hydrogen energy that is pollution-free, high energy density, easy to transport, and storable, thereby Realize efficient use of renew...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/06C25B1/04C25D3/64
CPCC25B1/04C25D3/64C25B11/081Y02E60/36
Inventor 赵强郝根彦李丹丹李晋平
Owner TAIYUAN UNIV OF TECH