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Metal catalyst and its mass production preparation method and fuel cell

A technology of metal catalysts and fuel cells, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of unsatisfactory metal catalytic activity, appropriate particle size, difficulty in mass production and high dispersion, and achieve catalytic performance and structure Stability, improved electrochemical performance, and uniform morphology and particle size

Active Publication Date: 2022-03-18
SHENZHEN ACAD OF AEROSPACE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art, to provide a metal catalyst and its mass production preparation method, to solve the problem that the existing fuel cell metal catalyst preparation method is difficult to produce in large quantities and highly dispersed and with appropriate particle size and high-efficiency catalytic performance Technical issues with metal catalysts
[0006] Another object of the present invention is to provide a fuel cell to solve the technical problem of unsatisfactory catalytic activity of metals contained in existing fuel cells

Method used

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  • Metal catalyst and its mass production preparation method and fuel cell
  • Metal catalyst and its mass production preparation method and fuel cell
  • Metal catalyst and its mass production preparation method and fuel cell

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preparation example Construction

[0024] On the one hand, the embodiment of the present invention provides a mass production preparation method of a metal catalyst. The process flow of the mass production preparation method of the metal catalyst is as follows: figure 1 shown, including the following steps:

[0025] S01. Mixing the metal precursor salt of the metal catalyst, the carrier and the reducing solvent in a protective atmosphere to obtain a mixture solvent;

[0026] S02. The mixture solvent is subjected to a pyrolysis reduction reaction in several temperature intervals to generate a metal catalyst; wherein, the temperature in the several temperature intervals increases from a low to high gradient, and the mixture solvent increases from a low temperature interval to a The pyrolysis reduction reaction is carried out under dynamic heating in the high temperature range.

[0027] In this way, the method for preparing the mass production of the metal catalyst is to dynamically heat the mixture solvent of t...

Embodiment 1

[0048] This embodiment provides a Pt / C catalyst metal catalyst and its preparation method for mass production. The mass production preparation method of the metal catalyst comprises the following specific steps:

[0049] S1: Take 1.05g Pt(acac) 2 Add 2g of carbon black powder to 600 ml of mixed liquid solution of oleylamine and oleic acid, and ultrasonically disperse for about 1 hour to prepare a black mixed solution;

[0050] S2: Add the prepared black mixed solution into container A, 2 After stirring for 15 minutes under protection, heat the mixed solution to 100°C;

[0051] S3: Pass the mixed solution in container A through different reaction temperature zones B-E at a flow rate of 3ml / min. The temperatures of reaction temperature zones B-E are respectively set as: 110°C, 130°C, 160°C, 220°C;

[0052] S4: washing the catalyst in the drying container F to obtain Pt / C catalyst powder.

Embodiment 2

[0054] This embodiment provides a Pt 3 Ni / C metal catalyst and its preparation method for mass production. The mass production preparation method of the metal catalyst comprises the following specific steps:

[0055] S1: take 0.53g Pt(acac)2, 0.12g Ni(acac) 2 Add 1g of carbon black powder to 400 ml of mixed liquid solution of oleylamine and oleic acid, and ultrasonically disperse for about 1 hour to prepare a black mixed solution;

[0056] S2: Add the prepared black solution into container A, under N 2 After stirring for 10 minutes under protection, heat the mixed solution to 110°C;

[0057] S3: Pass the mixed solution in container A through different reaction temperature zones B-E at a flow rate of 500ml / min, and set the temperatures of reaction temperature zones B-E as: 130°C, 160°C, 190°C, 260°C;

[0058] S4: washing the catalyst in the drying vessel C to obtain Pt 3 Ni / C catalyst powder.

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Abstract

The invention discloses a metal catalyst and its mass production preparation method and application. The mass production preparation method of the metal catalyst includes the steps of: mixing the metal precursor salt of the metal catalyst, the carrier and the reducing solvent in a protective atmosphere to obtain a mixture solvent; Carry out pyrolysis reduction reaction to generate metal catalyst; wherein, the temperature of the several temperature ranges increases from low to high gradient, and the mixture solvent is dynamically heated from the low temperature range to the high temperature range to carry out the pyrolysis reduction reaction. The mass production preparation method enables the generated metal particles to be uniformly dispersed and loaded on the carrier, and the metal particles have a uniform particle size and high catalytic activity. In addition, the process conditions of the mass-production preparation method can be stably controlled, and industrialized large-scale production is possible, thereby effectively reducing the production cost of the metal catalyst.

Description

technical field [0001] The invention belongs to the field of fuel cells, and in particular relates to a fuel cell catalyst and its mass production preparation method and application. Background technique [0002] A fuel cell is a power generation device that directly converts the chemical energy of fuel into electrical energy in an electrochemical reaction without combustion. It is considered to be one of the most promising power generation technologies in the 21st century, mainly including proton exchange membrane fuel cells, direct Alcohol fuel cells, etc., have the advantages of high energy density, fast start-up, and high energy conversion efficiency. [0003] Among them, the proton exchange membrane fuel cell technology is an efficient and clean energy conversion device, which is expected to solve the world's energy crisis and environmental pollution problems, and has broad application prospects in the fields of electric vehicles, portable power supplies and fixed power...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/90H01M4/92H01M4/88
CPCH01M4/9058H01M4/9075H01M4/92H01M4/925H01M4/8825Y02E60/50
Inventor 范洪东瞿威张胜刚涂婷
Owner SHENZHEN ACAD OF AEROSPACE TECH
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