Supercharge Your Innovation With Domain-Expert AI Agents!

Method for improving stability of non-noble metal cathode catalyst layer of fuel cell

A cathode catalysis and fuel cell technology, which is applied to battery electrodes, circuits, electrical components, etc., can solve the problems of unable to meet the needs of mobile power sources, unstable cathodes, etc., and achieve the effect of improving stability and improving stability

Pending Publication Date: 2022-03-04
XIAMEN UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a method for improving the stability of the non-precious metal cathode catalyst layer of a fuel cell, so as to solve the problem that the existing high-activity M / N / C catalyst applied to the cathode of a proton exchange membrane fuel cell is very unstable, which is far from being able to meet the needs of a mobile catalyst. Defects such as power requirements

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
  • Method for improving stability of non-noble metal cathode catalyst layer of fuel cell
  • Method for improving stability of non-noble metal cathode catalyst layer of fuel cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Take 10 mg of Pt@Fe / N / C catalyst compounded in advance and 0.5 mL of 5% Nafion solution to prepare cathode ink. The solvent is water and isopropanol (volume ratio 1:4). After ultrasonic dispersion, use electrostatic The cathode gas diffusion electrode was prepared by spraying, and the cathode catalyst loading was 4 mg cm -2 ;

[0023] (2) The anode catalyst is a commercial PtRu / C catalyst, and the anode gas diffusion electrode is prepared by the same spraying method, and the anode catalyst loading is 4 mg cm -2 ;

[0024] (3), select Nafion 211 membrane as proton exchange membrane, carry out hot pressing to prepare film-forming electrode with proton exchange membrane and the cathode gas diffusion electrode of step (1) and the anode gas diffusion electrode of step (2);

[0025] (4) Assembling the membrane electrode prepared in step (3) into a battery for single-cell testing. The test conditions are: Scribner test system; oxidant: 100% humidified oxygen or air; ano...

Embodiment 2

[0027] (1) Take 10mg of Au@Fe / N / C catalyst compounded in advance and 0.5mL 5% Nafion solution to prepare cathode ink. The solvent is water and isopropanol (volume ratio 1:4). After ultrasonic dispersion, use electrostatic The cathode gas diffusion electrode was prepared by spraying, and the cathode catalyst loading was 4 mg cm -2 ;

[0028] (2) The anode catalyst is a commercial PtRu / C catalyst, and the anode gas diffusion electrode is prepared by the same spraying method, and the anode catalyst loading is 4 mg cm -2 ;

[0029] (3), select Nafion 211 membrane as proton exchange membrane, carry out hot pressing to prepare film-forming electrode with proton exchange membrane and the cathode gas diffusion electrode of step (1) and the anode gas diffusion electrode of step (2);

[0030] (4) Assembling the membrane electrode prepared in step (3) into a battery for single-cell testing. The test conditions are: Scribner test system; oxidant: 100% humidified oxygen or air; anode fu...

Embodiment 3

[0032] (1) Take 10mg of Pd@Fe / N / C catalyst compounded in advance and 0.5mL 5% Nafion solution to prepare cathode ink. The solvent is water and isopropanol (volume ratio 1:4). After ultrasonic dispersion, use electrostatic The cathode gas diffusion electrode was prepared by spraying, and the cathode catalyst loading was 4 mg cm -2 ;

[0033] (2) The anode catalyst is a commercial PtRu / C catalyst, and the anode gas diffusion electrode is prepared by the same spraying method, and the anode catalyst loading is 4 mg cm -2 ;

[0034] (3), select Nafion 211 membrane as proton exchange membrane, carry out hot pressing to prepare film-forming electrode with proton exchange membrane and the cathode gas diffusion electrode of step (1) and the anode gas diffusion electrode of step (2);

[0035] (4) Assembling the membrane electrode prepared in step (3) into a battery for single-cell testing. The test conditions are: Scribner test system; oxidant: 100% humidified oxygen or air; anode fu...

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 method for improving the stability of a non-noble metal cathode catalyst layer of a fuel cell, and relates to a fuel cell technology. According to the invention, the alcohol and the trace noble metal are simultaneously introduced into the non-noble metal cathode catalyst layer, so that the stability of the non-noble metal cathode catalyst layer in the proton exchange membrane fuel cell can be greatly improved, a direct methanol fuel cell stability test is carried out under 0.1 A cm <-2 >, and the stability within 100 hours is greatly improved.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a method for improving the stability of a non-noble metal cathode catalyst layer of a fuel cell. Background technique [0002] As a device that converts chemical energy directly into electrical energy, the proton exchange membrane fuel cell has a high energy utilization rate and can achieve zero emissions, so it has attracted widespread attention. However, its large-scale commercialization is still limited by the expensive Pt catalyst, and 90% of Pt is used in the fuel cell cathode to reduce its overpotential due to the slow oxygen reduction kinetics of the cathode. Therefore, it is necessary to develop non-noble metal oxygen reduction electrocatalysts to replace expensive Pt catalysts. [0003] Pyrolyzed metal / nitrogen / carbon materials (M / N / C) are considered to be the most promising non-noble metal oxygen reduction electrocatalysts capable of replacing Pt. In recent years, ...

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 Applications(China)
IPC IPC(8): H01M4/88H01M4/90H01M4/92
CPCH01M4/90H01M4/92H01M4/88H01M4/8807Y02E60/50
Inventor 王宇成高晓彬周志有孙世刚
Owner XIAMEN 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