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Carbon-loaded platinum copper nano particle catalyst and preparation method of catalyst

A copper nanoparticle and carbon nanoparticle technology, applied in the fields of material science and electrocatalysis, can solve the problems of high fuel cell prices, high prices of platinum and gold, difficult mining and smelting, etc., so as to improve the anti-poisoning ability and promote uniformity. Alloying, easy operation effect

Active Publication Date: 2015-06-24
TAIYUAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the high price of platinum and gold, limited reserves, mining and smelting are difficult, the high cost of catalysts is the fundamental reason for the high price of fuel cells.

Method used

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  • Carbon-loaded platinum copper nano particle catalyst and preparation method of catalyst
  • Carbon-loaded platinum copper nano particle catalyst and preparation method of catalyst
  • Carbon-loaded platinum copper nano particle catalyst and preparation method of catalyst

Examples

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example 1

[0033] A carbon-supported platinum-gold-copper nanoparticle catalyst. The catalyst is supported by vulcan-72R carbon nanoparticles. The supported metal nanoparticle is an alloy of platinum, gold and copper. The metal nanoparticle content in the catalyst is about 25wt.%. The carbon nanoparticle The content of the particles is about 75 wt.%, the atomic ratio of platinum to gold in the metal nanoparticles is 1:1, and the ratio of copper atoms to the platinum atoms or gold atoms is 8:1.

[0034] The above-mentioned carbon-supported platinum-copper nanoparticle catalyst preparation method is as follows:

[0035] Potassium chloroplatinate, chloroauric acid, and copper sulfate with a molar ratio of platinum to copper of 1:1:8 were added to 20 mL of ethylene glycol solution, and stirred ultrasonically for 1 h.

[0036] Weigh carbon nanoparticles that are 3 times the total mass of the three metal elements, put them into a nitric acid solution with a mass fraction (concentration) of 70%...

Embodiment 2

[0040] A carbon-supported platinum-gold-copper nanoparticle catalyst. The catalyst is made of vulcan-72R carbon nanoparticles as a carrier. The metal nanoparticle loaded is an alloy of platinum, gold and copper. The metal nanoparticle content in the catalyst is about 40wt.%. The content of nanoparticles is about 60wt.%, the atomic ratio of platinum and gold in the metal nanoparticles is 1:1, and the ratio of copper atoms to the platinum atoms or gold atoms is 3:1.

[0041] The above-mentioned carbon-supported platinum-copper nanoparticle catalyst preparation method is as follows:

[0042] Potassium chloroplatinate, chloroauric acid, and copper sulfate with a molar ratio of platinum to copper of 1:1:3 were added to 30 mL of ethylene glycol solution, and stirred ultrasonically for 2 h.

[0043] Weigh carbon nanoparticles that are 1.5 times the total mass of the three metal elements, put them into a nitric acid solution with a mass fraction (concentration) of 60%, stir at 80°C fo...

Embodiment 3

[0046] A carbon-supported platinum-gold-copper nanoparticle catalyst. The catalyst is made of vulcan-72R carbon nanoparticles as a carrier. The metal nanoparticle loaded is an alloy of platinum, gold and copper. The metal nanoparticle content in the catalyst is about 10wt.%. The content of nanoparticles is about 90wt.%, the atomic ratio of platinum and gold in the metal nanoparticles is 1:1, and the ratio of copper atoms to the platinum atoms or gold atoms is 4:3.

[0047] The above-mentioned carbon-supported platinum-copper nanoparticle catalyst preparation method is as follows:

[0048] Potassium chloroplatinate, chloroauric acid, and copper sulfate with a molar ratio of platinum to copper of 3:3:4 were added to 20 mL of ethylene glycol solution, and stirred ultrasonically for 2 h.

[0049] Weigh carbon nanoparticles that are 9 times the total mass of the three metal elements, put them into a nitric acid solution with a mass fraction (concentration) of 40%, stir at 80°C for ...

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Abstract

The invention relates to a carbon-loaded platinum copper nano particle catalyst for electrocatalysis oxidation reaction of methanoic acid, methanol, ethanol and other liquid fuels and a preparation method of the catalyst. According to the catalyst, carbon nano particles are used as a carrier, nano-particle platinum, gold and copper are used as loading metals, wherein the atomic ratio of platinum to gold is 1 to 1, the atomic ratio of copper atoms to platinum atoms is 0.5 to 1-8 to 1, and the total mass of platinum, gold and copper nano particles is 10-60 percent of total mass of the catalyst. The invention further relates to a method for preparing the catalyst. According to the method, the process is simple, the operation is convenient, and the method is suitable for preparing the catalyst material for carbon-loaded fuel batteries in large scale.

Description

technical field [0001] The invention relates to a carbon-supported platinum-copper nanoparticle catalyst that can be used for electrocatalytic oxidation reactions of formic acid, methanol, ethanol and other liquid fuels and a preparation method thereof, in particular to a carbon-supported platinum with low platinum and low gold loading for fuel cells The copper nanoparticle catalyst and its preparation method belong to the field of material science and technology and the field of electrocatalysis. Background technique [0002] Fuel cell is a device that directly converts chemical energy into electrical energy without burning. Therefore, the energy conversion efficiency is high, and there is no pollution and noise. It is generally called clean energy. It can be used for portable power sources and miniaturized power sources. Application prospect. The PtAu / C catalyst currently used in direct formic acid fuel cells has the best catalytic performance when the atomic ratio of Pt ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/92
CPCY02E60/50
Inventor 王孝广王美李瑞雪何永伟
Owner TAIYUAN UNIV OF TECH
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