Sulfur-doped three-dimensional porous cuprous oxide nano-material and application thereof to electrochemical hydrogen evolution reaction

A cuprous oxide, three-dimensional nano technology, applied in the direction of copper oxide/copper hydroxide, nanotechnology for materials and surface science, nanotechnology, etc., can solve the problem of difficult control of stability, reduced catalytic performance of catalysts, poor conductivity, etc. problem, achieve the effect of reducing intermediate energy, improving stability and improving performance

Active Publication Date: 2017-05-10
JILIN UNIV
View PDF5 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As a transition metal oxide, cuprous oxide is difficult to control its stability, and cuprous oxide is a semiconductor with p

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
  • Sulfur-doped three-dimensional porous cuprous oxide nano-material and application thereof to electrochemical hydrogen evolution reaction
  • Sulfur-doped three-dimensional porous cuprous oxide nano-material and application thereof to electrochemical hydrogen evolution reaction
  • Sulfur-doped three-dimensional porous cuprous oxide nano-material and application thereof to electrochemical hydrogen evolution reaction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1: This example prepares a three-dimensional nanoporous material of sulfur-doped cuprous oxide, which specifically includes the following steps:

[0017] (1) Dissolve 6.4g of sodium hydroxide and 1.368g of ammonium persulfate in 60ml of deionized water, and stir evenly to obtain a mixed solution.

[0018] (2) Put the foamed copper obtained after cleaning into the mixed solution, soak at room temperature 25°C for 20min, take out deionized water and rinse, N 2 It blows dry, obtains the foamed copper that forms copper hydroxide on the surface;

[0019] (3) Soak the foamed copper after step 2 processing in Na 2 In S solution, soaked at room temperature 25°C for 24h, the Na 2 The concentration of S is 0.05mol / L, and the solvent is composed of deionized water and methanol according to the volume ratio of 1:1; then take it out and rinse it with deionized water, N 2 Blow dry to obtain foamed copper with cuprous sulfide on the surface.

[0020] (4) The copper foam tr...

Embodiment 2

[0025] Embodiment 2: the present embodiment studies the activation process, specifically as follows:

[0026]The copper foam loaded with cuprous sulfide on the surface is activated by electrochemical cyclic voltammetry cv to obtain sulfur-doped cuprous oxide converted from cuprous sulfide. The potential window of cv activation is 0.1V~-0.8V vs RHE, The scan rate is 100mV / s, the number of cycles is 1500, and the electrolyte is 0.5M H 2 SO 4 , the counter electrode is a Pt sheet.

[0027] Such as image 3 As shown, in the process of preparing sulfur-doped cuprous oxide three-dimensional nanoporous materials from cuprous sulfide by cyclic voltammetry, the polarization curves (Polarization curves) corresponding to 0 circles, 500 circles, 1000 circles, and 1500 circles respectively, It can be seen that as the number of cyclic voltammetry cycles increases, the catalytic performance of the material is gradually optimized, and the performance is stable after activation to 1500 cycl...

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
Diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses a sulfur-doped three-dimensional porous cuprous oxide nano-material and application thereof to electrochemical hydrogen evolution reaction. A cuprous sulfide nano-rod is synthesized on three-dimensional copper foam as a precursor mainly by virtue of a normal temperature impregnation method, and the sulfur-doped porous cuprous oxide nano-material is obtained in an electrochemical preparation process. The sulfur-doped three-dimensional porous cuprous oxide nano-material is mainly applied to electrochemical hydrogen evolution, the catalytic activity is detected by adopting a linear scanning curve (polarization curve), and the stability of the material is tested by virtue of a cyclic voltammetry curve. According to the sulfur-doped three-dimensional porous cuprous oxide nano-material, a porous Cu2OxS(1-x) nano-structure is synthesized by a method which is convenient to operate to enlarge the specific surface area of the material, copper is combined with oxygen to collaborate active sites around the copper and improve the adsorbability of the copper for hydrogen, and anionic sulfur is further doped to greatly improve the catalytic activity of the material, improve the catalysis efficiency of electrochemical hydrogen evolution and effectively improve the stability of the catalyst.

Description

technical field [0001] The invention belongs to the field of preparation and application of clean and sustainable new energy sources, and in particular relates to a sulfur-doped cuprous oxide three-dimensional nanoporous material and its application in electrochemical hydrogen evolution reaction. Background technique [0002] At present, fossil fuels are still the main raw materials for industrial production, and their combustion not only causes serious pollution to the environment, but also produces CO 2 Produce the greenhouse effect, and fossil fuel is a kind of non-renewable energy, so a lot of efforts are used to find clean renewable energy to replace fossil fuel. Since hydrogen energy comes from water and is burned to generate water, it is an ideal energy source that can be used to replace fossil fuels and can be used as an energy carrier. At present, there are three main methods for industrial hydrogen production: methane steam reforming, coal gasification and electro...

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
IPC IPC(8): C01G3/02B82Y30/00B82Y40/00C25B11/06C25B1/04
CPCB82Y30/00B82Y40/00C01G3/02C01P2002/30C01P2002/80C01P2004/03C01P2006/12C25B1/04C25B11/04Y02E60/36
Inventor 崔小强张晓琳张海燕祁琨
Owner JILIN UNIV
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