Check patentability & draft patents in minutes with Patsnap Eureka AI!

High-entropy intermetallic compound with ordered structure, preparation method of high-entropy intermetallic compound and application of high-entropy intermetallic compound as fuel cell cathode catalyst

A technology of intermetallic compounds with an ordered structure, applied in battery electrodes, structural parts, circuits, etc., can solve problems that are rarely reported, achieve the effects of reducing costs, improving electrochemical performance, and meeting high stability

Pending Publication Date: 2022-05-31
PEKING UNIV
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the research on high-entropy alloy catalysts has just started in recent years and is still in its infancy, especially the research on structurally ordered high-entropy alloys (high-entropy intermetallic compounds) as catalysts for hydrogen fuel cells has rarely been reported.

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
  • High-entropy intermetallic compound with ordered structure, preparation method of high-entropy intermetallic compound and application of high-entropy intermetallic compound as fuel cell cathode catalyst
  • High-entropy intermetallic compound with ordered structure, preparation method of high-entropy intermetallic compound and application of high-entropy intermetallic compound as fuel cell cathode catalyst
  • High-entropy intermetallic compound with ordered structure, preparation method of high-entropy intermetallic compound and application of high-entropy intermetallic compound as fuel cell cathode catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] The high-entropy intermetallic compound catalytic material with ordered structure is prepared by the following steps:

[0063] Step A, preparation reaction solution, it contains the ferric sulfate of 0.04mol / L, the cobalt sulfate of 0.04mol / L, the copper sulfate of 0.02mol / L, the chloroplatinic acid of 0.08mol / L, the tetrachloride of 0.02mol / L Iridium, Ketjen black conductive carbon powder, the pH is adjusted to 3 with sulfuric acid, and argon gas is introduced for protection, the purpose is to prevent the metal generated in the subsequent reduction process from being oxidized;

[0064] Step B. Quickly add saturated aqueous sodium borohydride solution to the above reaction solution, stir at high speed (2000r / min) for 8h, centrifugally wash and dry to obtain an intermediate; the purpose of "fast" is to make sodium borohydride in the metal salt solution quickly reach The maximum concentration, so that the five metal elements are reduced at the same time, regardless of pha...

Embodiment 2

[0083] Referring to the method in Example 1, a high-entropy intermetallic compound catalytic material with an ordered structure is prepared by the following steps:

[0084]Step A, prepare a reaction solution, which contains 0.04mol / L ferric chloride, 0.04mol / L cobalt chloride, 0.01mol / L cupric chloride, 0.1mol / L chloroplatinic acid, 0.02mol / L Iridium tetrachloride, XC-72 conductive carbon powder, the pH is adjusted to 3 with sulfuric acid, and nitrogen gas is introduced for protection;

[0085] Step B, adding the saturated aqueous sodium borohydride solution to the above reaction solution, stirring at high speed (2000r / min) for 8h, centrifugal washing and drying;

[0086] Step C, place the reaction product processed in Step B in a tube furnace with a reducing atmosphere (specifically, a 5-10% hydrogen-argon mixture, that is, in the mixture, the hydrogen volume ratio is 5-10%) , after calcining at 800 degrees for 12 hours, the supported high-entropy intermetallic compound nano...

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
Sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
The average particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of fuel cell cathode catalysts, and relates to a high-entropy alloy catalyst with an ordered structure, a preparation method of the high-entropy alloy catalyst and application of the high-entropy alloy catalyst as a hydrogen fuel cell cathode catalyst. The high-entropy intermetallic compound comprises five metal elements, namely Pt, Ir, Fe, Co and Cu; in the high-entropy intermetallic compound, the atomic percent of Pt atoms, Ir atoms, Fe atoms, Co atoms and Cu atoms is all 5%-45%. The invention further discloses a preparation method of the supported high-entropy intermetallic compound nanoparticle material, and the preparation method is simple and low in cost. The invention also discloses a hydrogen fuel cell with the cathode material containing the material. The material is controllable in component, excellent in electro-catalytic performance and high in stability, is very suitable for being used as a cathode material of a hydrogen fuel cell, and has a good application prospect in the aspect of the hydrogen fuel cell.

Description

technical field [0001] The invention belongs to the field of cathode catalysts for fuel cells, and relates to a high-entropy alloy catalyst with an ordered structure, a preparation method thereof and an application as a cathode catalyst for hydrogen fuel cells. Background technique [0002] Hydrogen fuel cells have high energy conversion efficiency, zero product pollution, easy operation and portability, so they have attracted much attention at present. At home and abroad, the research and development of hydrogen fuel cell vehicles is gradually increasing, and mass production and operational use have begun to help achieve the "dual carbon goal". However, the current hydrogen fuel cell cathode catalysts still mainly rely on the precious metal platinum, whose high price and poor cycle stability severely limit the large-scale commercial application of hydrogen fuel cell vehicles [Nature, 2012, 486, 43]. Although a large number of catalysts have been reported, it is still diffi...

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): H01M4/92H01M4/88B82Y30/00B82Y40/00
CPCH01M4/921H01M4/926H01M4/88B82Y30/00B82Y40/00H01M2004/8684Y02E60/50
Inventor 冯广夏定国
Owner PEKING UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com