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Fuel cell membrane electrode and preparation method thereof

A fuel cell membrane and electrode technology, which is applied in the direction of fuel cells, battery electrodes, circuits, etc., can solve the problems of difficult control of product uniformity and high requirements for replacement reaction control conditions, so as to reduce material costs, improve performance and quality, The effect of improving performance

Pending Publication Date: 2022-02-18
ZHEJIANG TIANNENG HYDROGEN ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this technical scheme, a replacement reaction is required, and the control conditions for the replacement reaction are relatively high, and the uniformity of the product is not easy to control

Method used

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  • Fuel cell membrane electrode and preparation method thereof
  • Fuel cell membrane electrode and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0029] Fibrous catalyst preparation: get platinum carbon catalyst (platinum load 50%, brand TKK, model 10E50E) 1g, deionized water 20g and op10 emulsifier 0.1g mix ultrasonic 30 minutes, then nano-dispersion equipment (high pressure homogeneous AH- 1500) 40mpa high-pressure treatment for 30 minutes to obtain nanoparticle slurry, take out the nanoparticle slurry and add 1g of treated carbon nanofibers for 10 minutes of ultrasonic dispersion, and then use IKA T25 equipment for high-speed shearing for 30 minutes to deposit and load, and then put it in an oven at 65°C Grind after drying.

[0030] Take by weighing 20 mg of fibrous catalyst and put it in a 50 ml beaker, add 10 g of deionized water to completely wet the catalyst, then add 100 mg of nafion solution (brand Dupont, model d520) with a mass concentration of 5% and 15 g of n-propanol in the beaker, and place the beaker at Constant-temperature ultrasonication in a constant-temperature ultrasonicator for 20 minutes, and then...

Embodiment 2

[0034]Preparation of fibrous catalyst: get platinum carbon catalyst (platinum loading 50%, brand TKK, model 10E50E) 1g, deionized water 20g, n-propanol 15g and op10 emulsifier 0.05g and mix ultrasonically for 30 minutes, then nano-dispersion equipment ( High-pressure homogenization (AH-1500) 40mpa high-pressure treatment for 30 minutes to obtain nanoparticle slurry, take out the nanoparticle slurry and add 0.8g of processed carbon nanofibers for 10 minutes of ultrasonic dispersion, and then use IKA T25 equipment for high-speed shearing for 30 minutes to deposit and load , and then dried in an oven at 60°C and ground for use.

[0035] Take by weighing 0.1g of fibrous catalyst and put it in a 50ml beaker, add 10g of deionized water to wet the catalyst completely, then add 0.7g of nafion solution (brand Dupont, model d520) and 15g of n-propanol in the beaker with a mass concentration of 5%. Put the beaker in a constant temperature sonicator for constant temperature ultrasonicatio...

Embodiment 3

[0038] Preparation of fibrous catalyst: get platinum carbon catalyst (platinum loading 50%, brand TKK, model 10E50E) 1g, deionized water 15g, n-propanol 15g and op10 emulsifier 0.05g and mix ultrasonically for 30 minutes, then nano-dispersion equipment ( High-pressure homogenization (AH-1500) 40mpa high-pressure treatment for 50 minutes to obtain nanoparticle slurry, take out the nanoparticle slurry and add 0.5g of processed carbon nanofibers for 10 minutes of ultrasonic dispersion, and then use IKA T25 equipment for high-speed shearing for 40 minutes to deposit and load , and then dried in an oven at 60°C and ground for use.

[0039] Take by weighing 0.1g of fibrous catalyst and put it in a 50ml beaker, add 10g of deionized water to wet the catalyst completely, then add 0.7g of nafion solution (brand Dupont, model d520) and 15g of n-propanol in the beaker with a mass concentration of 5%. The beaker was placed in a constant temperature sonicator for constant temperature ultras...

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Abstract

The invention discloses a fuel cell membrane electrode and a preparation method thereof. The preparation method comprises the following steps: (1) dispersing a platinum-carbon catalyst into nano particles, and depositing the nano particles on a nano carbon material to form a fibrous catalyst, the mass ratio of the platinum-carbon catalyst to the nano carbon material being 1: (0.5-5); (2) dispersing the fibrous catalyst in the step (1) in a mixed system of deionized water and an organic solvent, adding an ionic polymer solution to prepare slurry, and spraying the slurry on two sides of a proton exchange membrane to form a three-dimensional structure catalyst layer for the fuel cell, with one side as an anode catalyst layer and the other side as a cathode catalyst layer. The specific surface area and porosity of the catalyst layer are increased by constructing the three-dimensional structure of the catalyst layer, and the hydrophobic effect of the catalyst layer is adjusted by adopting the fluorocarbon polymer, so that the utilization rate of the platinum catalyst is increased, the platinum load is reduced, and the power density of the membrane electrode is improved.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a fuel cell membrane electrode and a preparation method thereof. Background technique [0002] Fuel Cell (Fuel Cell) is an electrochemical power generation device, which is different from a battery in the conventional sense. A fuel cell directly converts chemical energy into electrical energy in an electrochemical manner. The proton exchange membrane fuel cell is considered to be the ultimate mode of energy, and it has become a research hotspot because of its high energy conversion efficiency, no pollution, and quick startup at low temperature, especially in recent years. The pace of commercialization continues to accelerate, and more and more companies and research institutions have launched proton exchange membrane fuel cell vehicles with more commercial advantages. High performance and high power density are very important for proton exchange membrane fuel cells, which is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88H01M8/1004H01M4/92
CPCH01M4/88H01M4/8828H01M8/1004H01M4/921H01M4/926Y02E60/50
Inventor 沈新龙曹寅亮方蕾高璐璐孙基文李伯球徐乃涛徐淳川
Owner ZHEJIANG TIANNENG HYDROGEN ENERGY TECH CO LTD
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