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Ni-S high-efficient hydrogen evolution electrode loaded with Co-OH and preparation method thereof

A hydrogen evolution electrode, high-efficiency technology, applied in the direction of electrode, electrode shape/type, electrolysis process, etc., can solve the problems of unpublished patent documents, etc., and achieve the effect of increasing conduction speed, increasing specific surface area, and enhancing adhesion ability

Inactive Publication Date: 2018-11-30
天津市大陆制氢设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Through the search of published patent documents, no published patent documents identical to this patent application have been found

Method used

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  • Ni-S high-efficient hydrogen evolution electrode loaded with Co-OH and preparation method thereof
  • Ni-S high-efficient hydrogen evolution electrode loaded with Co-OH and preparation method thereof
  • Ni-S high-efficient hydrogen evolution electrode loaded with Co-OH and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A preparation method of Ni-S high-efficiency hydrogen evolution electrode loaded with Co-OH, its innovation lies in that it includes the following steps:

[0032] (1) Pretreatment of conductive substrate:

[0033] Choose tailored nickel foam with a size of 1×4cm; completely soak it with 100ml of acetone, and ultrasonically shake for 30 minutes to remove the residual oil stains on the surface of the foam nickel; rinse the soaked foam nickel with deionized water repeatedly Place it in the prepared 150ml, 3mol / L HCl, and ultrasonically shake for 15min to remove the oxide layer on the surface of the foamed nickel; finally, take the foamed nickel out of the solution and wash it with absolute ethanol and deionized water repeatedly until PH= 7. Put it in a vacuum drying box for vacuum drying and storage to prevent it from being re-oxidized and save it for subsequent use;

[0034] (2) Preparation of Ni-S nanosheet intermediate layer by hydrothermal method:

[0035] Using the hydrother...

Embodiment 2

[0047] A preparation method of Ni-S high-efficiency hydrogen evolution electrode loaded with Co-OH, its innovation lies in that it includes the following steps:

[0048] (1) Step (1) is the same as step (1) in Example 1;

[0049] (2) Preparation of Ni-S nanosheet intermediate layer by hydrothermal method:

[0050] Using the hydrothermal method, use 1.8mmol of thiourea as the precursor solution, stir evenly and ultrasonically shake for 40min, and place it in a 25ml PTFE hydrothermal reactor together with the processed foamed nickel; Hydrothermal reaction at ℃ for 6 hours. After the reactor is naturally cooled to room temperature, the electrode is taken out, the residue on the electrode surface is rinsed, and the middle layer of Ni-S nanosheet is obtained after keeping it in a vacuum drying oven at 60℃ for 8 hours;

[0051] (3) Secondary hydrothermal preparation of Co-OH catalyst layer:

[0052] After obtaining the Ni-S nanosheet intermediate layer prepared in the process of step (2), us...

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PUM

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Abstract

The invention relates to an Ni-S high-efficient hydrogen evolution electrode loaded with Co-OH and a preparation method thereof. The preparation method comprises the following steps: preprocessing a conductive substrate; then automatically growing an Ni-S nano-sheet middle layer on the preprocessed conductive substrate through a hydrothermal method; then performing electro-deposition on Co-OH nano-particles on the Ni-S nano-sheet middle layer. Because of a synergistic effect of a multi-stage nano-structure, re-distribution of electric charge is produced on two material interfaces, so that morereaction activity sites and smaller electron transfer resistance are obtained, and the formed electrode material has excellent hydrogen evolution performance and keeps stable in the electrolysis times exceeding 48 hours. The method disclosed by the invention has the advantages of simple operation and low production cost. The electrode with hydrogen evolution catalytic activity prepared with by adopting the method can be widely applied to alkaline water electrolysis industries.

Description

technical field [0001] The invention belongs to the field of hydrogen preparation, relates to a hydrogen evolution electrode and a preparation method thereof, and specifically relates to a Ni-S high-efficiency hydrogen evolution electrode loaded with Co-OH and a preparation method thereof. Background technique [0002] As a material on which human society depends for survival and progress, energy plays an important role in human production and social life. With the development of economy and society, human demand for energy will increase with the increase of production activities. The accompanying problem of energy shortage will also become more and more serious with the increase of demand. How to be efficient? Providing energy efficiently will be an important issue in the future social development. Hydrogen energy is regarded as a new and ideal energy carrier because of its rich resources, high combustion calorific value, harmless combustion products, and renewable nature....

Claims

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Application Information

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IPC IPC(8): C25B11/06C25B1/04C25B11/03
CPCC25B1/04C25B11/031C25B11/051C25B11/091Y02E60/36
Inventor 许卫
Owner 天津市大陆制氢设备有限公司
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