Fuel cell membrane electrode, preparation method thereof and fuel cell

A fuel cell membrane and electrode technology, applied in fuel cells, battery electrodes, circuits, etc., can solve the problems of membrane electrode performance attenuation, achieve the effects of reducing decomposition voltage, prolonging service life, and inhibiting corrosion

Active Publication Date: 2021-10-12
GUANGZHOU AUTOMOBILE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the performance of the membrane electrode is attenuated due to the reverse pole phenomenon existing in

Method used

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

Examples

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Comparison scheme
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Example Embodiment

[0055] Another embodiment of the present invention provides a method of preparing a fuel cell membrane electrode as described above, comprising the following steps:

[0056] The catalytic active component and anti-electrode material were dispersed in a solvent to prepare an anode catalyst slurry and a cathode catalyst slurry, and the anti-counter-electrode material comprises IRO. 2 Ruo 2 One or more of NIO and COO;

[0057] The anode catalyst slurry and the cathode catalyst slurry were applied to both sides of the proton exchange membrane, and after drying, the anode catalytic layer and the cathode catalytic layer were obtained.

[0058] In some embodiments, the proton exchange membrane is placed in 5% to 10%, and the treatment temperature is 60 ~ 100 ° C, so it is soaked in 0.5 after the treatment temperature is 60 ~ 100 ° C. The sulfuric acid of ~ 12mol / L was 0.5 to 1 h, and the treatment temperature was 60 to 80 ° C, and after washing at 60 to 100 ° C, the pretreated proton e...

Example Embodiment

[0067] Example 1

[0068] This example is intended to illustrate the fuel cell membrane electrode of the present invention and the preparation method thereof, including the following operation steps:

[0069] The PT / C catalyst having a mass fraction of 40% is taken to two beakers, respectively, and a small amount of isopropanol solution is added to each beaker, and the dissolved catalyst is stirred, and the two beaker is added to the two beakers. The total fluorosulfonic acid polymer solution of mass content is added to two beakers, and ultrasonic stirring is uniform, and then the solution containing the perfluorosulfonic acid polymer is poured into two kinds of a beaker containing a Pt / C catalyst, ultrasound And stir mixed with stirring for 60 min, prepared a mixed uniform catalyst slurry, weigh IRO 2 In the catalyst slurry, ultrasonic and stirring mixed alternate for 60 min. Catalyst slurry, PT / C catalyst: perfluorosulfonic acid polymer: IRO 2 The mass ratio is 2.5: 1: 1. ...

Example Embodiment

[0071] Example 2

[0072] This example is intended to illustrate the fuel cell membrane electrode of the present disclosure and the preparation method thereof, and the operational steps in Example 1 are different in:

[0073] Catalyst slurry, PT / C catalyst: perfluorosulfonic acid polymer: IRO 2 The mass ratio is 2.5: 1: 0.25.

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Abstract

In order to overcome the problem of performance degradation of a membrane electrode caused by an antipole phenomenon existing in an existing fuel cell, the invention provides a fuel cell membrane electrode which comprises a proton exchange membrane and a catalyst layer, and the catalyst layer comprises an anode catalyst layer and a cathode catalyst layer, the anode catalyst layer and the cathode catalyst layer are respectively arranged on two sides of the proton exchange membrane, the components of the catalyst layer comprise a catalytic active component and an anti-reverse electrode material, and the anti-reverse electrode material comprises one or more of IrO2, RuO2, NiO and CoO. Meanwhile, the invention also discloses a preparation method of the fuel cell membrane electrode and a fuel cell. According to the fuel cell membrane electrode provided by the invention, the corrosion phenomenon of reverse voltage on the carbon carrier in the catalyst layer in the reverse pole process is effectively inhibited, so that the attenuation of the performance of the fuel cell is delayed, and the service life of the fuel cell is prolonged.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, and in particular relates to a fuel cell membrane electrode, a preparation method thereof, and a fuel cell. Background technique [0002] Fuel cell vehicles have the advantages of environmental protection, high efficiency, short refueling time and long cruising range, and are an important development direction of new energy vehicles. The electric stack is the core component of a fuel cell vehicle, and the membrane electrode is one of the most important components in the electric stack, which affects the life and performance of the electric stack. [0003] Under the dynamic working condition of the vehicle, there will be frequent start-stop and rapid load change, especially when the load changes greatly, the fuel supply may be insufficient or not timely, causing the stack to be in a "starved" state , Severe lack of gas will cause a single or multiple batteries in the stack to have an extremely...

Claims

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Application Information

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IPC IPC(8): H01M4/86H01M4/88H01M4/90H01M4/92H01M8/1004
CPCH01M8/1004H01M4/9041H01M4/9083H01M4/926H01M4/8647Y02E60/50
Inventor 李目武许永亮周飞鲲洪绍景田冬伟袁述
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD
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