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Preparation method of fuel-cell catalyst Pt/WO3/C

A fuel cell and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, battery electrodes, etc., to achieve uniform loading, wide application, and improved utilization.

Inactive Publication Date: 2014-03-26
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, this kind of material has not been seen at home and abroad, especially the report of being used in the catalyst of proton exchange membrane fuel cell

Method used

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  • Preparation method of fuel-cell catalyst Pt/WO3/C
  • Preparation method of fuel-cell catalyst Pt/WO3/C
  • Preparation method of fuel-cell catalyst Pt/WO3/C

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Preparation of Pt / WO by continuous microwave method 3 / C catalyst, the specific implementation method is:

[0063] Preparation of Mesoporous Metal Oxide WO Using SBA-15 as Template 3 , the specific implementation method is: 2g SBA-15 is fully dispersed in 40mL ethanol solution, add 6g metal precursor silicic acid, evaporate the solvent after fully stirring, move the obtained powder material into a tube furnace, and roast at 600 ° C in the air 4h, programmed heating rate 2°C min -1 . After cooling, use 15% HF to remove the silica template, centrifuge, wash with deionized water for 4 to 6 times, and dry at 40°C for 12 hours to obtain nano-clustered mesoporous metal oxide WO 3 , its XRD pattern (as attached figure 1 ) results show that the prepared WO 3 With a high degree of crystallinity, TEM morphology can be seen that the prepared mesoporous metal oxide WO 3 Presents a nano-cluster structure, the nano-cluster is composed of parallel nano-rods, the diameter of the ...

Embodiment 2

[0067] Experiment with the same method as in Example 1, but change the feed ratio, so that the molar ratio of Pt and W is 1:0.42, and synthesize Pt / WO 3 / C catalyst, denoted as Pt / WO 3 / C(Pt:W=1:0.42)

Embodiment 3

[0069] Experiment with the same method as in Example 1, but change the feed ratio, so that the molar ratio of Pt and W is 1:0.84, and synthesize Pt / WO 3 / C catalyst, denoted as Pt / WO 3 / C (Pt:W=1:0.84), the catalyst prepared by embodiment 1,2,3 can detect Pt and WO from the XRD pattern 3 and the presence of C, as attached figure 2 . It can also be seen from the TEM image that WO 3 After joining, Pt and WO 3 Evenly dispersed on the carbon carrier material, the particle size of Pt is about 1.5~2nm, as attached image 3 .

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Abstract

The invention relates to a preparation method of a fuel-cell catalyst Pt / WO3 / C. According to the catalyst, XC-72 is used as an active component carrier, Pt nano particles are used as a main active component, mesoporous WO3 is used as an assistant, the quality percent of Pt in the catalyst is 10-30 percent, and the mol ratio of Pt to W is 1:0.1-1:1. The preparation method comprises the steps of pouring reduced Pt / ethylene glycol slurry to a carbon carrier added with the mesoporous metal oxide WO3 to obtain a Pt / WO3 / C electrocatalyst; preparing the mesoporous WO3 by adopting a molecular sieve template method. The prepared Pt / WO3 / C can be used as cathode and anode catalysts of a proton exchange membrane fuel cell.

Description

technical field [0001] The invention relates to a fuel cell catalyst Pt / WO 3 The preparation method of / C, specifically, uses XC-72 as the active component carrier, uses Pt nanoparticles as the main active component, and uses mesoporous WO 3 As an auxiliary agent, its preparation method is to pour the reduced Pt / ethylene glycol slurry into the compounded mesoporous metal oxide WO 3 On the carbon support material, Pt / WO 3 / C electrocatalyst, mesoporous WO 3 Prepared by molecular sieve template method. The catalyst of the invention can be used as the cathode and anode catalyst of proton exchange membrane fuel cells, and can be widely used in the field of fuel cells. Background technique [0002] As a new type of energy conversion device, proton exchange membrane fuel cell (PEMFC) has the advantages of low operating temperature, no pollution, high specific power, and rapid response. It has become a hot technology in the research and development of countries all over the wor...

Claims

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Application Information

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IPC IPC(8): B01J23/652H01M4/92H01M4/88
CPCY02E60/50
Inventor 侯明窦美玲梁栋邵志刚衣宝廉
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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