Process for preparing proton exchange film fuel cell multi component catalyst

A proton exchange membrane, fuel cell technology, applied in catalyst carriers, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of limiting the practical speed of fuel cells, high cost, lack of resources, etc., to improve the anti-CO Poisoning ability, less agglomeration, high purity effect

Inactive Publication Date: 2004-12-29
TSINGHUA UNIV
View PDF0 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, noble metals such as platinum (Pt) and ruthenium (Ru) are used as electrode catalysts for proton exchange mem

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

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0021] 1) 20 parts of activated carbon, 30 parts of chloroplatinic acid, 30 parts of ruthenium trichloride, and 20 parts of cerium oxide are added to a closed container loaded with 75% deionized water to form a premix;

[0022] 2) The premix was reacted in a nitrogen atmosphere at 200°C and a pressure of 2.5Mpa for 6 hours, and then cooled to room temperature;

[0023] 3) Add 2 parts of sodium thiosulfate and treat at 140° C. for 4 hours to evenly fix platinum, ruthenium and cerium on the original position of the reduction reaction;

[0024] 4) Filtrating, washing and drying the slurry formed above to obtain a PtRuCe / C multi-component catalyst.

example 2

[0026] 1) 25 parts of carbon nanotubes, 50 parts of platinum chloride, 10 parts of ruthenium oxide, and 15 parts of samarium oxide are added to a closed container in which 80% deionized water has been added to form a premix;

[0027] 2) The premix was reacted in an argon atmosphere at 150°C and a pressure of 2Mpa for 8 hours, and then cooled to room temperature;

[0028] 3) adding 4 parts of sodium dithionite, treating at 120°C for 6 hours, evenly fixing platinum, ruthenium and samarium on the original position of the reduction reaction;

[0029] 4) Filtrating, washing and drying the slurry formed above to obtain a PtRuSm / C multi-component catalyst.

example 3

[0031] 1) Add 20 parts of activated carbon, 25 parts of platinum oxide, 25 parts of ruthenium oxide, and 30 parts of yttrium oxide into a closed container that has been dewatered by 80% to form a premix;

[0032] 2) The premix was reacted in a nitrogen atmosphere at 300°C and a pressure of 2Mpa for 6 hours, and then cooled to room temperature;

[0033] 3) adding 2 parts of sodium formate, and treating at 200° C. for 2 hours, evenly fixing platinum, ruthenium and yttrium on the original position of the reduction reaction;

[0034] 4) Filter, wash and dry the slurry formed above to obtain a PtRuY / C multi-component 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 relates to the field of fuel cell material preparation, in particular a process for preparing multi-component catalyst for proton interchange film fuel cells through water heating method which comprises, charging carrying agent, one or two noble metallic compounds, one or two rare earth metallic oxides, and deionized water into air-tight container in inert atmosphere under the condition of 110-300 deg. C, pressure 0.3-4 MPa for reaction 1-24 hours, cooling down and adding reduction agent, deacidizing 1-10 hours at 100-200 deg. C, washing, filtering and drying to obtain the multicomponent catalyst.

Description

technical field [0001] The invention belongs to the technical scope of fuel cell material preparation, and in particular relates to a preparation method of a multi-component catalyst for a proton exchange membrane fuel cell using a hydrothermal method. Background technique [0002] At present, noble metals such as platinum (Pt) and ruthenium (Ru) are used as electrode catalysts for proton exchange membrane fuel cells (PEMFC), and the cost is high and resources are scarce, which greatly limits the practical speed of fuel cells. In order to reduce the amount of precious metals and improve the dispersion of precious metals, people use various preparation methods, such as sol-gel method, co-impregnation, co-deposition, colloidal method, etc. to provide more specific surface area for the contact between metal particles and the carrier, and reduce the electrode unit area. The amount of Pt used on the screen increases the utilization rate of Pt. [0003] The hydrothermal method is...

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): B01J23/00B01J32/00H01M4/88H01M4/90
CPCY02E60/50
Inventor 谢晓峰徐景明毛宗强
Owner TSINGHUA 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