Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Hollow iron-nickel nitride catalyst, preparation method and all-water electrolysis application thereof

A technology of nitrides and catalysts, applied in the field of hollow iron-nickel nitride catalysts and preparations, can solve the problems of reducing the utilization rate of catalyst materials, catalytic activity, affecting the full exposure of active sites, and easy agglomeration of nanostructures, which is beneficial to batch preparation , low cost, simple operation

Pending Publication Date: 2021-01-12
YANGZHOU UNIV
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for nickel-iron nitride-based powder catalysts, the nanostructures are easy to agglomerate during the synthesis process, which affects the full exposure of its active sites, and the dopant atoms are easy to dissolve during the catalytic reaction, which reduces the utilization rate and Achieve stable catalytic activity

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
  • Hollow iron-nickel nitride catalyst, preparation method and all-water electrolysis application thereof
  • Hollow iron-nickel nitride catalyst, preparation method and all-water electrolysis application thereof
  • Hollow iron-nickel nitride catalyst, preparation method and all-water electrolysis application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031]Preparation of hollow iron-nickel nitride catalyst: select granular 100-300 nm iron-nickel alloy nanoparticles, in which the atomic ratio of iron and nickel is 1:3, place them in an air atmosphere, heat to 400°C, and hold for 2 hours. Hollow iron-nickel alloy nanoparticles are obtained, and the hollow iron-nickel alloy nanoparticles are further placed in an ammonia atmosphere and kept at 500°C for 3 hours to obtain hollow iron-nickel nitride nanoparticles (FeNi3N) Catalyst. For its morphological structure and crystal structure, seefigure 1 withfigure 2 .

[0032]The hollow iron-nickel nitride nanoparticles obtained in Example 1 (FeNi3N) The catalyst is used in the hydroelectric analysis of oxygen and hydrogen evolution reactions. The specific process is: take 5 mg of catalyst and disperse in 1 ml of ethanol and 50 μl of Nafion solution to make a well-dispersed catalyst ink, and drop it on the surface of the glassy carbon electrode Add 5 μl of catalyst ink and use it for hydroelec...

Embodiment 2

[0034]Preparation of hollow iron-nickel nitride nanoparticles: select granular 100-300 nm iron-nickel alloy nanoparticles, in which the atomic ratio of iron and nickel is 1:3, place them in an air atmosphere, heat to 450°C, and hold for 2 hours , To obtain hollow iron-nickel alloy nanoparticles. Furthermore, the hollow iron-nickel alloy nanoparticles were placed in an ammonia atmosphere and kept at 450°C for 3 hours to obtain hollow iron-nickel nitride nanoparticles (FeNi3N) Catalyst.

Embodiment 3

[0036]Preparation of hollow iron-nickel nitride nanoparticles: select granular 100-300 nm iron-nickel alloy nanoparticles, in which the atomic ratio of iron and nickel is 1:3, place them in an air atmosphere, heat to 400°C, and hold for 2 hours , To obtain hollow iron-nickel alloy nanoparticles. Furthermore, the hollow iron-nickel alloy nanoparticles were placed in an ammonia atmosphere and kept at 400°C for 3 hours to obtain hollow iron-nickel nitride nanoparticles (FeNi3N) Catalyst.

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

No PUM Login to View More

Abstract

The invention discloses a hollow iron-nickel nitride catalyst as well as a preparation method and an all-water electrolysis application thereof. The preparation method comprises the following steps: selecting iron-nickel alloy nanoparticles with the particle size of 100-300 nm, wherein the ratio of iron atoms to nickel atoms is 1:3; and using a Kirkendall effect to conduct low-temperature oxidation etching to synthesize hollow iron-nickel-based nanoparticles, conducting low-temperature nitriding treatment to obtain the hollow iron-nickel nitride catalyst. The catalyst is used in full-hydrolysis cathode hydrogen precipitation and anode oxygen precipitation reactions, and shows better electrocatalytic activity compared with an iron-nickel nitride powder material. The synthesis method is simple and low in cost, the full-water electrolysis catalytic activity of the hollow iron-nickel nitride catalyst is higher, and the hollow iron-nickel nitride catalyst is suitable for large-batch production.

Description

Technical field[0001]The invention belongs to the technical field of electrocatalytic water decomposition, and relates to a hollow iron-nickel nitride catalyst and a preparation method and its full-water electrolysis application.Background technique[0002]Iron-nickel-based compounds have been extensively studied in the field of energy electrocatalysis, especially in the field of water splitting; in electrocatalytic water splitting, it has outstanding water electrolysis performance and low price characteristics, showing good application value. Among the iron-nickel-based compounds, iron-nickel nitride is an intermetallic compound, which has good electrical conductivity and resistance to electrochemical corrosion. It exhibits good activity in electrocatalytic water splitting and has attracted much attention. For example, the layered structure Ni3FeN nitride, in the oxygen precipitation reaction, up to 10 mA cm-2At this time, only 355 mV of overpotential is required (Nano Energy 2017, 3...

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): B01J27/24C25B1/04
CPCB01J27/24C25B1/04B01J35/33Y02E60/36
Inventor 冯立纲刘宗李东泽
Owner YANGZHOU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com