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A kind of pt/c catalyst for fuel cell and its preparation process

A fuel cell and preparation technology, applied in the field of nanomaterials, can solve the problems of low single output and complicated catalyst process, and achieve the effects of simplifying the process, shortening the preparation time, and enhancing the wettability

Active Publication Date: 2016-08-31
KUSN INNOVATION INST OF NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Catalyst synthesis by this method is more complicated and the single yield is less

Method used

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  • A kind of pt/c catalyst for fuel cell and its preparation process

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Effect test

Embodiment 1

[0030] Preparation process of Pt / C catalyst for fuel cell:

[0031] (1) Weigh 1.2g XC-72R carbon black carrier, 150g deionized water, 249g 25g / L ethylene glycol solution of chloroplatinic acid hexahydrate, 90g ethylene glycol, 1M / L Na 2 CO 3 Put 35g of the solution in a 1000mL beaker and stir until the pH of the system is 11 ~ 13;

[0032] (2) The reaction system in step (1) was left to stand for 10 minutes, then ultrasonically stirred for 20 minutes, and then heated by 700W microwave for 10 minutes;

[0033] (3) After the reaction liquid is cooled to room temperature, use H 2 SO 4 Adjust the pH of the system to 4, make the platinum particles settle, and let it stand for 20 minutes;

[0034] (4) Use a filter membrane with a pore size of 1 micron, filter through a positive pressure filter device, wash with 40°C deionized water several times, and finally test the filtrate with 0.1mol / L silver nitrate solution until there is no chloride ion;

[0035] (5) Put the filter cake...

Embodiment 2

[0037] Preparation process of Pt / C catalyst for fuel cell:

[0038] (1) Weigh 1.2g of EC300 carbon black carrier, 180g of deionized water, 249g of 25g / L isopropanol solution of chloroplatinic acid hexahydrate, 70g of isopropanol, and 30g of 1M / L NaOH solution in a 1000mL beaker, and stir until the pH of the system is 11 ~ 13;

[0039] (2) Let the reaction system in step (1) stand for 15 minutes, carry out ultrasonic stirring for 20 minutes, and 800W microwave heating for 7 minutes;

[0040] (3) After the reaction solution is cooled to room temperature, adjust the pH of the system to 3 with HCl to settle the platinum particles and let it stand for 15 minutes;

[0041] (4) Use a filter membrane with a pore size of 1 micron, filter through a positive pressure filter device, wash with deionized water at 30°C several times, and finally test the filtrate with 0.1mol / L silver nitrate solution until there is no chloride ion;

[0042] (5) Put the filter cake in a watch glass and dry...

Embodiment 3

[0044] Preparation process of Pt / C catalyst for fuel cell:

[0045] (1) Weigh 1.2g of EC600 carbon black carrier, 120g of deionized water, 249g of 25g / L pentaerythritol solution of chloroplatinic acid hexahydrate, 50g of pentaerythritol, and 25g of 1M / L Na2CO3 solution in a 1000mL beaker, and stir until the pH of the system is 11 ~ 13;

[0046] (2) The reaction system in step (1) was left to stand for 8 minutes, then ultrasonically stirred for 20 minutes, and then heated by 1000W microwave for 6 minutes;

[0047] (3) After the reaction liquid is cooled to room temperature, adjust the pH of the system to 3 with HNO3 to settle the platinum particles and let it stand for 25 minutes;

[0048] (4) Use a filter membrane with a pore size of 1 micron, filter through a positive pressure filter device, wash with deionized water at 50°C several times, and finally check the filtrate with 0.1mol / L silver nitrate solution until there is no chloride ion;

[0049] (5) Put the filter cake i...

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Abstract

The invention discloses a Pt / C catalyst for a fuel cell. The mass fraction of Pt in the Pt / C catalyst is 60%. -200 parts, 200-350 parts of reducing polyol solution of 15-30g / L chloroplatinic acid hexahydrate, 30-100 parts of reducing polyol, 10-40 parts of 1M alkali solution. Compared with the prior art of the same kind, the catalyst prepared by the invention has large electrochemical active area, simple process and high single output.

Description

technical field [0001] The invention relates to a Pt / C catalyst for a fuel cell and belongs to the field of nanometer materials. Background technique [0002] Facing the increasingly depleted fossil energy and increasingly severe environmental problems, finding alternative clean energy has become the top priority of current research. The fuel cell converts fuel into electrical energy in only one step through electrochemistry, without a combustion process in the middle, and the uniqueness of greatly improving the conversion efficiency has become a research hotspot among many new energy sources. As a new type of energy, fuel cells are still in the research and development and trial stage, and problems such as performance, lifespan, and cost have not been completely overcome. Among them, the performance and price of the catalyst are huge obstacles hindering the industrialization of fuel cells. At present, the catalysts used in fuel cells are mainly Pt / C catalysts, and there a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/90H01M4/92B01J23/42
CPCH01M4/926Y02E60/50
Inventor 范书琼顾军刘建国王志刚陈佳黄林邹志刚
Owner KUSN INNOVATION INST OF NANJING UNIV
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