A highly efficient porous mos2-zn hydrogen evolution electrode and its preparation method

A hydrogen evolution electrode, mos2-ni technology, applied in the direction of electrode, electrode shape/type, electrolytic coating, etc., can solve the problems of high energy consumption of hydrogen evolution electrode, difficult industrial production, etc., to improve the shedding phenomenon, increase the real surface area and ratio Surface area, the effect of improving hydrogen evolution activity

Active Publication Date: 2018-05-08
天津市大陆制氢设备有限公司
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems existing in the prior art, the present invention provides a highly efficient porous MoS 2 -Ni hydrogen evolution electrode and its preparation method, which overcomes the problems of high energy consumption and difficulty in industrial production of hydrogen evolution electrode prepared in the prior art

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A highly efficient porous mos2-zn hydrogen evolution electrode and its preparation method
  • A highly efficient porous mos2-zn hydrogen evolution electrode and its preparation method
  • A highly efficient porous mos2-zn hydrogen evolution electrode and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Pretreatment of conductive substrate

[0035]Nickel foam is selected as the substrate, and the nickel foam is cut to a size of 2.5cm·4.0cm, rinsed with deionized water and set aside. Firstly, electrolytic degreasing was performed on the tailored nickel foam; the nickel foam was used as the cathode and the anode successively, placed in the electrolyte, and electrolyzed for 15 minutes respectively, with a current density of 40mA cm -2 . The electrolyte formula is: sodium hydroxide 40g L -1 , sodium carbonate 25g·L -1 , sodium phosphate 25g·L -1 . After the degreasing treatment, the electrode was rinsed repeatedly with deionized water until the pH value was neutral. Afterwards, pickling the foamed nickel after electrolytic degreasing: put it into the acid solution for 30 minutes, then rinse it with deionized water until the pH is neutral, and set it aside. The pickling liquid configuration method is to mix concentrated hydrochloric acid and deionized water accord...

Embodiment 2

[0050] Step (1) is the same as step (1) in Example 1;

[0051] (2) Composite electrodeposited MoS 2 -Ni coating

[0052] The conductive substrate processed in step (1) is the working electrode, and the nickel foam is the counter electrode;

[0053] The composition of the plating solution is: nickel sulfate 100g L -1 , zinc sulfate 20g·L -1 , anhydrous sodium acetate 5g·L -1 , sodium citrate 25g·L -1 , ammonium chloride 15g·L -1 , boric acid 15g·L -1 , nanometer molybdenum disulfide particles 10g L -1 ;

[0054] The temperature of the plating solution is 20°C, and the current density is 250mA·cm during the electroplating process. -2 , the deposition time is 30min.

[0055] During the electroplating process, in order to ensure that the molybdenum disulfide particles are uniformly dispersed in the deposition solution, magnetic stirring at a suitable speed is performed at the bottom of the electrolytic tank. Rinse with deionized water after electroplating to remove resi...

Embodiment 3

[0065] Step (1) is the same as step (1) in Example 1;

[0066] (2) Composite electrodeposited MoS 2 -Ni coating

[0067] The conductive substrate processed in step (1) is the working electrode, and the nickel foam is the counter electrode;

[0068] The composition of the plating solution is: nickel sulfate 120g L -1 , zinc sulfate 20g·L -1 , anhydrous sodium acetate 25g·L -1 , sodium citrate 20g·L -1 , ammonium chloride 15g·L -1 , boric acid 15g·L -1 , nanomolybdenum disulfide particles 2g L -1 ;

[0069] The temperature of the plating solution is 25°C, and the current density is 400mA·cm during the electroplating process. -2 , the deposition time is 40min.

[0070] During the electroplating process, in order to ensure that the molybdenum disulfide particles are uniformly dispersed in the deposition solution, magnetic stirring at a suitable speed is performed at the bottom of the electrolytic tank. Rinse with deionized water after electroplating to remove residual p...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
Login to view more

Abstract

The invention relates to an efficient and porous MoS2-Zn hydrogen evolution electrode. According to the electrode, nanometer-scale molybdenum disulfide particles are adopted as a source of molybdenum, the composite electro-deposition mode is adopted, the nanometer-scale molybdenum disulfide particles, Ni and Zn are all deposited to the surface layer of a conductive substrate, potassium hydroxide solution water-bath constant-temperature treatment is carried out after electro-deposition is completed, and finally the efficient and porous MoS2-Zn hydrogen evolution electrode is prepared. The invention further relates to a preparation method of the efficient and porous MoS2-Zn hydrogen evolution electrode. The method includes the steps of 1, pre-treating the conductive substrate; 2, carrying out composite electro-deposition on the nanometer-scale molybdenum disulfide particles; and 3, carrying out constant-temperature water-bath treatment on the electrode subjected to composite electro-deposition in a constant-temperature water-bath kettle through alkaline liquor for removing Zn. The method has the advantages that the operation is simple, the production cost is low and the structure of a catalyst layer is firm, and the catalytic active hydrogen evolution electrode prepared through the method can be widely applied to the alkaline water electrolysis industry.

Description

technical field [0001] The invention belongs to the field of hydrogen preparation, in particular to a highly efficient porous MoS 2 -Ni hydrogen evolution electrode and preparation method thereof. Background technique [0002] With the continuous progress and development of the economy, energy has become an indispensable part of human life, and human demand for energy is also increasing. At present, the main energy sources used by human beings are fossil fuels such as petroleum, coal, and natural gas. As the two major problems of environmental pollution and the shortage of fossil fuel reserves become increasingly prominent, the research focus of the world is shifting to the development of renewable and clean new energy represented by hydrogen energy. The characteristic of renewable clean new energy is inexhaustible, which can not only relieve environmental pressure, but also meet the requirements of today's economic development. Among many new energy sources, hydrogen has...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/03C25B11/04C25B1/04C25D15/00C25D3/22C25D5/48
CPCC25B1/04C25D3/22C25D5/48C25D15/00C25B11/031C25B11/075Y02E60/36
Inventor 许卫
Owner 天津市大陆制氢设备有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap