High-stability fuel-cell catalyst modified by oxide and preparation method thereof

A fuel cell, high-stability technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the low stability of transition metal cluster chalcogenides, Restrict the application of fuel cells and other issues to achieve the effects of reducing corrosion and shedding, improving metal utilization, and good stability

Inactive Publication Date: 2011-06-22
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
View PDF0 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the low stability of transition metal cluster

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-stability fuel-cell catalyst modified by oxide and preparation method thereof
  • High-stability fuel-cell catalyst modified by oxide and preparation method thereof
  • High-stability fuel-cell catalyst modified by oxide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0047] Example 1

[0048] 1) Put 2ml ZrO(NO 3 ) 2 (10mg Zr / ml) aqueous solution was added to a 250ml beaker, then a mixture of 30ml ethanol and 20ml water was added, and the mixture was stirred evenly with ultrasonic, and then 405.2mg XC-72 carbon powder was added and mixed into a homogeneous slurry. Put the beaker in a 60°C water bath, stir and evaporate the solvent. The resulting black powder was heat-treated in the air at 300°C for 3 hours to obtain ZrO 2 / C Composite carrier.

[0049] 2) A. Weigh 100 mg of the above-mentioned composite carrier accurately, add it to 30 ml of ethylene glycol, and stir ultrasonically to form a uniform slurry. Mix 6.6ml RuCl3 (3.63mg Ru / ml) ethylene glycol solution and 1ml Na 2 SeO 3 (2.99mg Se / ml) solution was added to 50ml ethylene glycol, mixed uniformly by ultrasonic, 2mol / L NaOH ethylene glycol solution was added, pH value was adjusted to 8, and microwave heating was performed for 2 minutes. Add the homogeneous slurry of the composite carrie...

Example Embodiment

[0056] Example 2

[0057] 1) Put 0.5ml ZrO(NO 3 ) 2 The aqueous solution (10mg Zr / ml) was added to a 250ml beaker, and then a mixture of 30ml ethanol and 20ml water was added, and the mixture was stirred evenly by ultrasonic, and then 263.3mg XC-72 carbon powder was added and mixed into a homogeneous slurry. Put the beaker in a 60°C water bath, stir and evaporate the solvent. The resulting black powder was heat-treated in the air at 300°C for 3 hours to obtain ZrO 2 / C Composite carrier.

[0058] 2) A. Weigh 100 mg of the above-mentioned composite carrier accurately, add it to 30 ml of ethylene glycol, and stir ultrasonically to form a uniform slurry. 6.9ml RuCl 3 (3.63mg Ru / ml) ethylene glycol solution was added to 50ml ethylene glycol, mixed uniformly by ultrasonic, added 2mol / L NaOH ethylene glycol solution, adjusted PH value to 8, and heated in microwave for 2min. Add the homogeneous slurry of the composite carrier while it is hot. The temperature is lowered to room temperat...

Example Embodiment

[0062] Example 3

[0063] 1) Put 0.5ml ZrO(NO 3 ) 2 The aqueous solution (10mg Zr / ml) was added to a 250ml beaker, then a mixture of 30ml ethanol and 20ml water was added, and the mixture was stirred evenly with ultrasonic, and then 263.3mg BP2000 carbon powder was added and mixed into a homogeneous slurry. Put the beaker in a 60°C water bath, stir and evaporate the solvent. The resulting black powder was heat-treated in the air at 300°C for 3 hours to obtain ZrO 2 / C Composite carrier.

[0064] 2) A. Weigh 200 mg of the above composite carrier accurately, add it to 60 ml of ethylene glycol, and stir ultrasonically to form a uniform slurry. 6.9ml RuCl 3 (3.63mg Ru / ml) ethylene glycol solution was added to 50ml ethylene glycol, mixed uniformly by ultrasonic, added 2mol / L NaOH ethylene glycol solution, adjusted PH value to 9, and heated in microwave for 2min. Add the homogeneous slurry of the composite carrier while it is hot. The temperature is lowered to room temperature, the pH...

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
Apertureaaaaaaaaaa
Login to view more

Abstract

The invention relates to a proton exchange membrane fuel-cell catalyst, in particular to a high-stability fuel-cell catalyst modified by oxide and a preparation method thereof. The preparation method of the high-stability fuel-cell catalyst modified by oxide comprises the following steps: evenly loading the oxide on a carbon carrier, and then depositing active nano metal particles on the composite oxide carrier, wherein the oxide is any or a composite oxide containing two or more elements of Ti, Zr, V, Cr, Mo, W, Mn, Co, Ni and Si, the mass ratio of the oxide to the carbon carrier is (0.01-1): 1, and the mass ratio of the active nano metal particles to the composite oxide carrier is (1:19)-(6:4). The active nano metal particles are anchored on the surface of the carrier by the oxide so asto be evenly dispersed, so that the binding force between the active component and the carrier is enhanced, the stability of the electro-catalyst is improved, and the durability of operation of a fuel cell is improved.

Description

technical field [0001] The invention relates to a proton exchange membrane fuel cell catalyst, in particular a highly stable fuel cell cathode catalyst, which is characterized in that the nanometer active components in the catalyst are modified by oxides. The invention also relates to a preparation method of the catalyst. Background technique [0002] A fuel cell is an electrochemical power generation device, which directly converts chemical energy into electrical energy isothermally and electrochemically without going through a heat engine process, and is not limited by the Carnot cycle, and has high energy conversion efficiency. At the same time, it is also an environmentally friendly energy conversion device, which hardly emits nitrogen and sulfur oxides, and the emission of carbon dioxide is reduced by more than 40% compared with conventional power plants. Proton exchange membrane fuel cell (PEMFC) not only has the general characteristics of fuel cells, such as high ene...

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): B01J27/057B01J23/46B01J23/89H01M4/92H01M4/88
CPCY02E60/50
Inventor 张华民徐婷金虹马原蔚钟和香王美日
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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