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Direct-methanol fuel cell anode catalyst and preparation method

A methanol fuel cell and catalyst technology, applied in battery electrodes, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as catalyst loss, and achieve the effects of convenient operation, excellent catalytic activity, and simple preparation process

Inactive Publication Date: 2012-10-10
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is also true that the organic molecules introduced in the catalyst preparation process often need to be cleaned up in a very complicated process, and such a cleaning process often leads to a large loss of the catalyst

Method used

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  • Direct-methanol fuel cell anode catalyst and preparation method
  • Direct-methanol fuel cell anode catalyst and preparation method

Examples

Experimental program
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Embodiment example 1

[0020] (1) 0.200 mmol of six-membered melon ring and 0.067 mmol of H 2 PtCl 6 ·6H 2 O was added to 15 mL deionized water, and stirred for one hour to obtain a uniformly mixed light yellow turbid liquid A;

[0021] (2) Add 0.30 g potassium bromide and 0.24 g ascorbic acid to the cloudy liquid A obtained in step (1) to obtain mixture B;

[0022] (3) Add dropwise 1 mol / L potassium hydroxide aqueous solution to the mixture B obtained in step (2), adjust the pH value to be equal to 9, and obtain mixture C;

[0023] (4) Put the mixture C obtained in step (3) in an oil bath preheated to 120°C for 6 hours, and cool it down to room temperature naturally;

[0024] (5) The product obtained in step (4) was centrifuged (7900 rpm), washed twice with 30 mL of ethanol, and dried at 50°C for 10 hours to obtain the anode catalyst for direct methanol fuel cell of the present invention.

[0025] figure 1 The transmission electron micrograph of the catalyst that provides for implementation ca...

Embodiment example 2

[0030] (1) 0.200 mmol of six-membered melon ring and 0.067 mmol of H 2 PtCl 6 ·6H 2 O was added to 15 mL deionized water, and stirred for one hour to obtain a uniformly mixed light yellow turbid liquid A;

[0031] (2) Add 0.30 g of potassium bromide and 15 mL of ethylene glycol to the cloudy liquid A obtained in step (1) to obtain mixture B;

[0032] (3) Put the mixture B obtained in step (2) in an oil bath preheated to 120°C for 6 hours, and let it cool down to room temperature naturally;

[0033] (4) The product obtained in step (3) was centrifuged (7900 rpm), washed twice with 30 mL of ethanol, and dried at 50°C for 10 hours to obtain the anode catalyst for direct methanol fuel cell of the present invention.

[0034] figure 2 The transmission electron micrograph of the catalyst that provides for implementation case 2, from figure 2 It can be seen that the synthesized catalysts are approximately spherical, the particle size is about 5nm and the distribution is uniform...

Embodiment example 3

[0039] (1) 0.200 mmol of six-membered melon ring and 0.067 mmol of H 2 PtCl 6 ·6H 2 O was added to 15 mL deionized water, and stirred for one hour to obtain a uniformly mixed light yellow turbid liquid A;

[0040] (2) Add 0.30 g of potassium bromide, 0.24 g of ascorbic acid and 15 mL of ethylene glycol to the turbid liquid A obtained in step (1) to obtain mixture B;

[0041] (3) Put the mixture B obtained in step (2) in an oil bath preheated to 120°C for 6 hours, and let it cool down to room temperature naturally;

[0042] (4) The product obtained in step (3) was centrifuged (7900 rpm), washed twice with 30 mL of ethanol, and dried at 50°C for 10 hours to obtain the anode catalyst for direct methanol fuel cell of the present invention.

[0043] image 3 The transmission electron micrograph of the catalyst that provides for implementation case 2, from image 3 It can be seen that the synthesized catalysts are all multi-legged, the particle size is about 5nm and the distrib...

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Abstract

The present invention discloses a direct-methanol fuel cell anode catalyst and a preparation method, which belongs to the field of the fuel cell catalyst. According to the invention, a stabilizer and a carrier of the catalyst is cucurbit [6] uril, an active substance of the catalyst is platinum nanoparticles, the regulation and control of growth of different crystal planes are realized by regulating the types of the reducing agents, so that the control of shape of the catalyst can be realized. The diameter of nanoparticles is less than 10nm, and the catalyst has the advantages of uniform diameter of nanoparticles, high energy plane enrichment, uniform distribution, high catalytic activity, excellent ability of carbon monoxide poisoning resistance and the like.

Description

technical field [0001] The invention relates to a method for preparing platinum nano particles as an anode catalyst of a direct methanol fuel cell by using a six-membered cucurbit ring as a stabilizer and a carrier. Through the adjustment of kinetic factors, the morphology and dispersion of platinum nanoparticles are effectively regulated, and a direct methanol fuel cell anode catalyst with high activity and excellent anti-poisoning ability is prepared, which belongs to the field of fuel cell catalysts. Background technique [0002] The direct methanol dye cell is a kind of proton exchange membrane fuel cell that directly uses liquid methanol as a fuel supply source. Low-temperature power generation, simple power generation structure, high efficiency, and environmental friendliness, especially the relatively safe storage and transportation characteristics make direct methanol dye batteries the mainstream of portable electronic product applications. Both the anode and cathod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/90B01J31/02
CPCY02E60/50
Inventor 曹敏纳曹荣
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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