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Fuel cell PtC catalyst and preparation process thereof

A fuel cell and preparation process technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of low single output, high price, complex preparation process, etc., to reduce reaction loss, short reaction time, and simple process. Effect

Pending Publication Date: 2022-04-15
SHANGHAI NAR INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few manufacturers producing Pt / C catalysts at home and abroad, the price is high, the preparation process is relatively complicated and the single output is low

Method used

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  • Fuel cell PtC catalyst and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Preparation process of Pt / C catalyst for fuel cells with 40% Pt loading:

[0037] A. Weigh 2.64gPt(acac) 2 , 2.6g sodium citrate, 480g ethylene glycol in a three-necked flask, pass nitrogen, and heat and stir at 80°C until the reagent is completely dissolved, adjust the pH to 9 by adding saturated NaOH ethylene glycol solution, add 2g carbon black Carrier, stir evenly;

[0038] B. Put the flask in the microwave reactor, insert a thermocouple into the reaction solution to control the temperature, add a magnetic stirrer, and adjust the temperature to 800rpm. Set the microwave reaction time to 15 minutes, the temperature to 140°C, and the microwave power to 900W;

[0039] C. Transfer the reacted reaction solution to an eggplant-shaped bottle, set the vacuum degree of the rotary evaporator to 30 mbar, and the temperature of the oil bath to 100°C. Use a rotary evaporator to remove most of the ethylene glycol until the reactant is muddy, stop the rotary evaporation, and co...

Embodiment 2

[0041] Example 2: Preparation process of Pt / C catalyst for fuel cell with 50% Pt loading:

[0042] A. Weigh 5gK 2 PtCl 6 , 4g of sodium citrate, 480g of ethylene glycol in a three-necked flask, feed nitrogen, and heat and stir at 80°C until the reagent is completely dissolved, adjust the pH to 7 (no need to adjust), add 2g of carbon black carrier, and stir evenly;

[0043] B. Put the flask in the microwave reactor, insert a thermocouple into the reaction solution to control the temperature, add a magnetic stirrer, and adjust the temperature to 1000rpm. Set the microwave temperature to 120°C and the microwave power to 800W, and the reaction procedure is as follows: microwave reaction for 5 minutes, stop for 10 minutes. Continue to repeat the above steps 2 times for a total of 15 minutes of reaction;

[0044] C. Transfer the reacted reaction solution to an eggplant-shaped bottle, set the vacuum degree of the rotary evaporator to 50 mbar, and the temperature of the oil bath to...

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PUM

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Abstract

The invention discloses a fuel cell PtC catalyst and a preparation process thereof.The Pt / C catalyst which is uniform in morphology, concentrated in nanoscale and high in Pt loading capacity is prepared through a microwave reaction and a one-pot method, and the preparation process comprises the steps of simple microwave reaction and subsequent treatment, preparation of Pt metal particles through a polyhydric alcohol reduction method, and preparation of the Pt metal particles through a one-pot method. And after compounding with a carrier, cleaning and drying to obtain the carbon-loaded Pt / C with a uniform nanostructure. The method disclosed by the invention is simple in process and good in reproducibility, and the prepared Pt catalyst is uniform in distribution and high in single yield, and has good catalytic activity and stability when being applied to small-molecule fuel cells.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a fuel cell PtC catalyst and a preparation process thereof. Background technique [0002] A fuel cell is an electrochemical power generation device that directly converts the chemical energy stored in fuel and oxidant into electrical energy through an electrochemical reaction process, and is a highly efficient and clean new energy source. At present, although its research has made great progress, its real commercialization still faces many challenges. Among them, catalyst is one of the key materials that determine the performance, life and cost of fuel cells, and is also one of the important factors that hinder the commercialization of fuel cells. Pt / C catalyst is the most widely used and typical catalyst for fuel cells. The development of highly active and low-cost Pt / C catalysts is of great significance for large-scale commercialization. At present, there are few manufact...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/92H01M4/88
CPCY02E60/50
Inventor 茆涵
Owner SHANGHAI NAR INDAL