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A kind of preparation method of high-efficiency, batch production fuel cell catalyst

A mass production, fuel cell technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of complex process and long time consumption, and achieve the effect of simple operation, easy temperature response, and processing time saving

Active Publication Date: 2018-07-17
广东喜玛拉雅氢能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a Pt / C catalyst preparation method that is simple in process, short in production time, and easy to mass-produce in view of the shortcomings of the existing Pt / C catalyst preparation method that the process is complex and time-consuming

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Soak 1g of carbon black (Vulcan XC-72) in 100mL of citric acid aqueous solution with a citric acid content of 10g / L, ultrasonically disperse for 20min, then filter to obtain a paste mixture, heat to 200°C and keep for 30min;

[0027] (2) Take 0.12g of pretreated carbon carrier, pour into 90mL of ethylene glycol solution of chloroplatinic acid prepared in advance, the concentration of chloroplatinic acid hexahydrate in the mixed solution is 2g / L, and add 16mL of deionized water , then emulsified and sheared for 10 minutes, added NaOH ethylene glycol solution, adjusted the slurry to pH 10, and then emulsified and sheared for 10 minutes;

[0028] (3) The uniformly mixed slurry was stirred with nitrogen gas for 20 minutes, and then heated by intermittent microwave, microwave power 750W, working for 5s and stopping for 5s, stopping heating after the reaction temperature reached 123°C, and naturally cooling to room temperature;

[0029] (4) After cooling, add concentrated...

Embodiment 2

[0031] (1) Soak 1g of activated carbon (EC300) in 100mL of acetic acid aqueous solution, the acetic acid content is 10g / L, ultrasonically disperse for 20min, then filter to obtain a paste mixture, heat to 200°C and keep for 30min;

[0032] (2) Take 0.42g of the pretreated carbon carrier and pour it into the ethylene glycol solution of chloroplatinic acid prepared in advance

[0033] 90mL, the concentration of chloroplatinic acid hexahydrate in the mixture is 2g / L, add 20mL deionized water, then emulsify and shear for 15min, add NaOH in ethylene glycol solution, adjust the slurry to pH 10, and then emulsify and shear for 15min ;

[0034] (3) Stir the uniformly mixed slurry with nitrogen gas for 20 minutes, then use intermittent microwave heating, microwave power 750W, work for 7 seconds and stop for 7 seconds, stop heating after the reaction temperature reaches 120°C, and naturally cool to room temperature;

[0035] (4) After cooling, add concentrated hydrochloric acid as a se...

Embodiment 3

[0037] (1) Soak 1g of carbon black (Vulcan XC-72) in 500mL of acetic acid aqueous solution, the acetic acid content is 10g / L, ultrasonically disperse for 20min, then filter to obtain a paste mixture, heat to 200°C and keep for 30min;

[0038] (2) Take 0.15g of pretreated carbon carrier, pour it into 300mL of ethylene glycol solution of chloroplatinic acid prepared in advance, the concentration of chloroplatinic acid hexahydrate in the mixed solution is 2g / L, and add 60mL of deionized water , then emulsified and sheared for 30 minutes, added NaOH ethylene glycol solution, adjusted the slurry to pH 9, and then emulsified and sheared for 15 minutes;

[0039] (3) Stir the uniformly mixed slurry with nitrogen gas for 30 minutes, then use intermittent microwave heating, microwave power 750W, work for 7 seconds and stop for 7 seconds, stop heating after the reaction temperature reaches 120°C, and naturally cool to room temperature;

[0040] (4) After cooling, add concentrated hydroch...

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PUM

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Abstract

The invention provides a mass production method of a catalyst for a fuel cell. A carbon support is pre-processed by an organic weak acid, the operation is simple, the processing time is reduced, and the production efficiency is improved; and with the adoption of an intermittent microwave method, the reaction temperature is easier to control, good reproducibility is achieved, and the quality control of production is facilitated; and the catalyst is washed with a volatile organic solvent, the drying temperature is reduced, the drying time is reduced, and moreover, the catalyst stability is favorably improved. The method is simple, the required preparation time is relatively short, a large amount of catalysts can be produced in one time, mass production is favorably achieved, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, and in particular relates to a method for preparing catalysts for fuel cells with high efficiency and mass production. Background technique [0002] Traditional petrochemical energy is facing depletion and environmental pollution, and the development of new energy has become increasingly urgent. As an energy conversion device, the proton exchange membrane fuel cell can directly convert the chemical energy in fuels such as hydrogen and methanol into electrical energy. It has the characteristics of high energy density, high efficiency, and environmental friendliness. It is an ideal power source for electric vehicles. It is also regarded as a potential power supply in the fields of portable power supply and fixed power station in the future, and has always been a hot spot in research and development. [0003] Platinum-based catalysts are an important part of fuel cells, but Pt is expensive and r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/92
CPCH01M4/926Y02E60/50
Inventor 王星宇雷一杰梁峰罗斌
Owner 广东喜玛拉雅氢能科技有限公司