CCM for fuel cell and preparation method thereof

A fuel cell and slurry technology, applied in the direction of fuel cells, battery electrodes, circuits, etc., can solve the problems of degradation and loss of precious metal catalysts, reduce the effective catalytic area, and reduce the performance of electrodes, so as to achieve good resistance to degradation and loss, durability, drainage, etc. Good effect, the effect of reducing impedance

Pending Publication Date: 2022-05-20
ZHEJIANG TIANNENG HYDROGEN ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The research on fuel cell vehicles is getting deeper and deeper, but there are still technical bottlenecks in its commercialization. When the fuel cell is working, a large amount of water is easy to enter the electrode hole, covering the surface of the catalytic layer and it is difficult to drain away, resulting in lo

Method used

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  • CCM for fuel cell and preparation method thereof
  • CCM for fuel cell and preparation method thereof
  • CCM for fuel cell and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0037] Example 1

[0038] (1) Preparation of hydrophilic layer slurry:

[0039]1) Weigh 20% platinum content, the graphitized highly durable precious metal catalyst TANAKA brand (Tanaka Precious Metals Group) TEC10EA20E and 5% by mass of DuPont's d520 ionic polymer solution stirring and mixing, by mass ratio, in TEC10EA20E Carbon: ionic polymer=1:1, stirring time 30min;

[0040] 2) then adding mass percent is 8% hydrophilic solvent Solvay D83 solution (brand is solvay, model is D83-24B), in mass ratio, carbon in TEC10EA20E: hydrophilic agent=1:2, stirred for 20min;

[0041] 3) Then the whole ultrasonic homogenization is used for 40min;

[0042] (2) Preparation of the first hydrophobic layer slurry:

[0043] 1) Weigh 50% platinum content, TEC10E50E of the noble metal catalyst TANAKA brand with high specific surface area and 5% by mass of DuPont's d520 ionic polymer solution, stirring and mixing, in terms of mass ratio, carbon in TEC10E50E: ionic polymer= 1:1, stirring time ...

Example Embodiment

[0054] Example 2

[0055] (1) Preparation of hydrophilic layer slurry:

[0056] 1) Weigh 20% platinum content, the graphitized high-durability noble metal catalyst TANAKA brand TEC10EA20E and DuPont's d520 ionic polymer solution are stirred and mixed, in terms of mass ratio, carbon in TEC10EA20E: ionic polymer = 1: 0.7, stirring time 20min;

[0057] 2) then adding the Solvay D83 solution with a hydrophilic solvent mass percentage of 8%, in terms of mass ratio, carbon in the TEC10EA20E: hydrophilic agent=1:2, stirred for 20min;

[0058] 3) Then the whole ultrasonic homogenization is used for 40min;

[0059] (2) Preparation of the first hydrophobic layer slurry:

[0060] 1) Weigh 50% platinum content, TEC10E50E of the noble metal catalyst TANAKA brand with high specific surface area and 5% by mass of DuPont's d520 ionic polymer solution, stirring and mixing, in terms of mass ratio, carbon in TEC10E50E: ionic polymer= 1:0.6, stirring time 30min;

[0061] 2) then add the PTFE...

Example Embodiment

[0071] Example 3

[0072] (1) Preparation of hydrophilic layer slurry:

[0073] 1) Weigh 20% platinum content, and stir and mix TEC10EA20E of TANAKA brand, a highly durable and graphitized noble metal catalyst, with DuPont's d520 ionic polymer solution. In terms of mass ratio, carbon in TEC10EA20E: ionic polymer = 1:10, stirring time 40min;

[0074] 2) then adding the Solvay D83 solution with a hydrophilic solvent mass percentage of 8%, in terms of mass ratio, carbon in the TEC10EA20E: hydrophilic agent=1:10, stirred for 20min;

[0075] 3) Then the whole ultrasonic homogenization is used for 40min;

[0076] (2) Preparation of the first hydrophobic layer slurry:

[0077] 1) Weigh 50% platinum content, TEC10E50E of the noble metal catalyst TANAKA brand with high specific surface area and 5% by mass of DuPont's d520 ionic polymer solution, stirring and mixing, in terms of mass ratio, carbon in TEC10E50E: ionic polymer= 1:10, stirring time 40min;

[0078] 2) then add the PTFE...

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Abstract

The invention discloses a CCM for a fuel cell and a preparation method of the CCM, and relates to the field of fuel cells. A CCM for a fuel cell comprises a proton exchange membrane and catalyst layers located on the two sides of the proton exchange membrane, and each catalyst layer is divided into a hydrophilic layer, a first hydrophobic layer and a second hydrophobic layer from one side of the proton exchange membrane to the outside. The CCM for the fuel cell is good in drainage effect, degradation loss resistance and durability, and the preparation method of the CCM is easy to operate and suitable for batch production and laboratory operation.

Description

technical field [0001] The invention relates to the field of fuel cells, in particular to a CCM for fuel cells 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. It does not go through a heat engine process, so it is not limited by the Carnot cycle, has high energy conversion efficiency (40%-60%), is environmentally friendly, and hardly emits nitrogen and sulfur oxides. Due to its excellent performance, fuel cells have become a research hotspot in various countries in the world, and have played a huge role in power generation, mobile power supply, and vehicle power supply. The research on fuel cell vehicles is getting deeper and deeper, but there are still technical bottlenecks in its commercialization. When the fuel cell is working, a ...

Claims

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Application Information

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IPC IPC(8): H01M4/88H01M4/90H01M8/1004
CPCH01M4/90H01M4/8825H01M8/1004Y02E60/50
Inventor 沈新龙曹寅亮李伯球方蕾范峰强杨光华孙基文
Owner ZHEJIANG TIANNENG HYDROGEN ENERGY TECH CO LTD
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