High activity methanol-resistance direct methanol fuel cell cathode catalyst and production method thereof

A technology for methanol fuel cells and cathode catalysts, applied in battery electrodes, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc. Difficulties and other problems, to achieve the effect of performance improvement, stability improvement and strong controllability

Inactive Publication Date: 2009-03-11
SOUTH CHINA UNIV OF TECH
View PDF4 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] But still can't meet the requirement
Chinese Invention Patent Publication No. CN100998948 discloses "Preparation Method of Oxygen Electroreduction Catalyst for Direct Methanol Fuel Cell". Metal clusters, the preparation of which requires the solid-state reaction of Se elemental elements at high temperatures, which is difficult to prepare and high in cost
Chinese Invention Patent Publication No. CN 101125296A discloses "a direct methanol fuel cell cathode catalyst and its preparation method". 2 SO 4 、H 2 PtCl 6 and Na 2 WO 4 In the mixed sol, at a constant potential, the basic structural formula is Pt-H obtained by electrodeposition on the carbonaceous material x WO 3 (0

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 activity methanol-resistance direct methanol fuel cell cathode catalyst and production method thereof
  • High activity methanol-resistance direct methanol fuel cell cathode catalyst and production method thereof
  • High activity methanol-resistance direct methanol fuel cell cathode catalyst and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Ultrasonic dispersion of carbon nanotubes, ferric chloride, chloroplatinic acid aqueous solution in ethylene glycol analytical grade, wherein the mass ratio of platinum (Pt): iron (Fe): carbon nanotubes: ethylene glycol is 1:0.1:8.4 : 2800, the ultrasonic time is 1h, the pH value is adjusted to 7, the mixture is refluxed at 125°C for 2h, then filtered, washed 3 times, and vacuum-dried at 65°C to obtain PtFe / CNTs;

[0032]Disperse the PtFe / CNTs prepared in step (1) in ethylene glycol analytical grade, ultrasonically disperse, add copper sulfate, wherein the mass ratio of platinum (Pt): copper (Cu): ethylene glycol is 1:0.1:2800 , adjusted the pH value to 7, refluxed at 125°C for 2h, then filtered, washed three times, and dried in vacuum at 65°C to obtain Cu / PtFe / CNTs.

Embodiment 2

[0034] Ultrasonic dispersion of carbon nanotubes, ferric chloride, and chloroplatinic acid aqueous solution in analytically pure ethylene glycol, wherein the mass ratio of platinum (Pt): iron (Fe): carbon nanotubes: ethylene glycol is 1:0.2:8.4 : 3000, the ultrasonic time is 2h, the pH value is adjusted to 7.5, the mixture is refluxed at 130°C for 2.5h, then filtered, washed 4 times, and vacuum-dried at 70°C to obtain PtFe / CNTs;

[0035] Disperse the PtFe / CNTs prepared in step (1) in ethylene glycol analytical grade, ultrasonically disperse, add copper sulfate, wherein the mass ratio of platinum (Pt): copper (Cu): ethylene glycol is 1:0.2:3000 , adjusted the pH value to 7.5, refluxed at 130°C for 2.5h, then filtered, washed 4 times, and dried in vacuum at 70°C to obtain Cu / PtFe / CNTs.

[0036] The XRD patterns of the thus prepared PtFe / CNTs, Cu / PtFe / CNTs catalysts and Pt / CNTs catalysts (for comparison) are shown in figure 2 As shown, it can be seen from the figure that Pt exi...

Embodiment 3

[0038] Ultrasonic dispersion of carbon nanotubes, ferric chloride, and chloroplatinic acid aqueous solution in ethylene glycol analytically pure, wherein the mass ratio of platinum (Pt): iron (Fe): carbon nanotubes: ethylene glycol is 1:0.29:8.4: 3500, the ultrasonic time is 3h, and the pH value is adjusted to 7.5. The mixture is refluxed at 140°C for 2h, then filtered, washed 5 times, and vacuum-dried at 70°C to obtain PtFe / CNTs;

[0039] Disperse the PtFe / CNTs prepared in step (1) in ethylene glycol analytically pure, ultrasonically disperse, add copper sulfate, wherein the mass ratio of platinum (Pt): copper (Cu): ethylene glycol is 1:0.45:3500, Adjust the pH value to 7.5, reflux at 140°C for 3h, then filter, wash 5 times, and vacuum-dry at 70°C to prepare Cu / PtFe / CNTs.

[0040] The transmission electron micrographs of the Cu / PtFe / CNTs catalyst thus prepared are as follows: figure 1 As shown, it can be seen from the figure that the supported catalyst prepared by the presen...

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
particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention discloses a high-activity methanol-resistance direct methanol fuel cell cathode catalyst and a preparation method thereof. The activity composition of the catalyst is Cu/PtM, the carrier is a carbon nanotube, wherein, PtM is used for improving oxygen reduction activation and Cu is used for improving methanol-resistance performance. The preparation method is as follows: firstly, the carbon nanotube, the compounds of metal M, and platinic chloride solution are scattered in glycol ultrasonically, the pH value is adjusted, the temperature is increased and reflux is carried out, platinum based catalyst loaded by the carbon nanotube is prepared by filtering, washing and drying; then the prepared platinum based catalyst loaded by the carbon nanotube is scattered in the glycol and is added with copper sulfate, then the pH value is adjusted, the temperature is increased and the reflux is carried out, and then the platinum direct methanol fuel cell cathode catalyst loaded by the carbon nanotube coated with Cu is prepared by the filtering, washing and drying. The preparation method is simple, operational condition is mild and the controllability is good; besides, the catalyst prepared by the method has high oxygen reduction activation and good methanol-resistance performance.

Description

technical field [0001] The invention relates to a catalyst and a preparation method thereof, in particular to a highly active methanol-resistant direct methanol fuel cell cathode catalyst and a preparation method thereof. Background technique [0002] Direct methanol fuel cell (DMFC) is a kind of proton exchange membrane fuel cell. It uses solid polymer membrane as electrolyte and directly uses methanol (liquid or gaseous) as fuel. It has abundant fuel sources, convenient storage, and no intermediate reforming Or conversion device, light weight, small size, high energy density, less environmental pollution, safe and simple operation, etc. Due to the many advantages mentioned above, it can be used in power supply, as a power supply for mobile phones and laptop computers, and has the potential to be used by specific end users in the future. Therefore, the research of DMFC has received extensive attention. [0003] At present, one of the important problems facing the developm...

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): B01J23/89H01M4/90H01M4/92H01M4/88
CPCY02E60/50
Inventor 王红娟梁家华彭峰余皓周春梅
Owner SOUTH CHINA UNIV OF TECH
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