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

Alkaline anion exchange membrane fuel cell anode nano-catalyst, preparation and application

A nano-catalyst, alkaline anion technology, used in fuel cells, solid electrolyte fuel cells, battery electrodes, etc., can solve the problems of increasing and hindering AAEMFC, and achieve large specific surface area, simple process, good dispersibility and stability. Effect

Active Publication Date: 2018-05-29
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although AAEMFC has inherited the advantages of fast kinetics of the alkaline fuel cell (AFC) cathode oxygen reduction reaction (ORR), under alkaline conditions, even with noble metal platinum-based catalysts, the exchange current density of the anode hydrogen oxidation reaction (HOR) is higher than that of It is 2 orders of magnitude smaller under acidic conditions, which seriously hinders the realization of AAEMFC's goal of getting rid of noble metal catalysts. Therefore, the recent research on non-platinum or non-noble metal anode hydrogen oxidation catalysts used under alkaline conditions has a tendency to gradually increase

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
  • Alkaline anion exchange membrane fuel cell anode nano-catalyst, preparation and application
  • Alkaline anion exchange membrane fuel cell anode nano-catalyst, preparation and application
  • Alkaline anion exchange membrane fuel cell anode nano-catalyst, preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] preparation:

[0022] (1) Carrier preparation: take 1.0g XC-72, 1.3275g cerium nitrate (Ce(NO 3 ) 3 ·6H 2 (0) and 65ml of deionized water in a 250mL three-necked flask; stir and ultrasonic each for 30min; then add 2M KOH aqueous solution dropwise to adjust the pH to 12, continue ultrasonically stirring for 120min, centrifuge and wash until the supernatant is neutral, and vacuum-dry at 60°C 24 hours, then roasted in the air atmosphere for 120min, and cooled naturally in nitrogen to obtain a composite carrier with a diameter of about 7.6nm;

[0023] (2) Catalyst preparation: Take 90 mg of the composite carrier prepared in (1) in a single-necked flask, then add 0.052 mMH 2 IrCl 6 Water solution and 30ml EG solution were ultrasonically stirred for 30 minutes each, the mixed solution was adjusted to pH 12 with NaOH, and refluxed for 3 hours in an oil bath at 120°C, the pH of the reaction solution was adjusted to 3 with HCl, cooled to room temperature, and centrifuged and...

Embodiment 2

[0025] Get the prepared composite carrier of step (1) in the appropriate example 1 and carry out powder XRD test, the result is as follows figure 1 shown.

Embodiment 3

[0027] Get the prepared composite carrier of step (1) in the appropriate example 1 and carry out TEM test and carry out particle size statistics, the result is as follows figure 2 shown.

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
The average diameteraaaaaaaaaa
Active areaaaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation method and application of an alkaline anion exchange membrane fuel cell anode nano-catalyst. The transition metal oxide cerium dioxide (CeO2) is employed to modify a carbon loaded iridium (Ir / C) nano-catalyst, compared with an Ir / C catalyst prepared by the same method, the prepared Ir / CeO2-C catalyst has a larger specific surface area, higher catalytic activity and better stability under an alkaline condition, also the preparation process is simple, and the conditions are mild. The transition metal oxide (CeO2) modified carbon loaded iridium (Ir / C) nano-catalyst prepared by the method provided by the invention has good application value in alkaline anion exchange membrane fuel cell (AAEMFC) hydrogen oxidation electrocatalysis.

Description

technical field [0001] The invention relates to a preparation method and application of an alkaline anion exchange membrane fuel cell anode nano-catalyst, the method is through the preparation of a composite carrier and the preparation of a catalyst, and the prepared Ir / CeO 2 The -C catalyst has high practical value in the electrocatalysis of anode hydrogen oxidation in alkaline anion exchange membrane fuel cells. Background technique [0002] Alkaline anion exchange membrane fuel cell (AAEMFC) is a new type of fuel cell developed in recent years. Compared with the proton exchange membrane fuel cell (PEMFC), it inherits the advantages of fast kinetics of the cathode oxygen reduction reaction (ORR) of the alkaline fuel cell (AFC), and is expected to fundamentally get rid of the dependence on the noble metal platinum; at the same time, it uses solid The polymer electrolyte membrane overcomes the problems of liquid electrolyte leakage and carbonation of KOH electrolyte solutio...

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): H01M4/90H01M4/88H01M8/10
CPCH01M4/8647H01M4/88H01M4/9041H01M4/9083H01M8/10H01M2008/1095Y02E60/50
Inventor 俞红梅覃博文迟军贾佳高学强邵志刚
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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