Method for continuously manufacturing 3-CCM (three Catalyst Coated Membranes) of fuel cell

A core component, fuel cell technology, used in fuel cells, solid electrolyte fuel cells, sustainable manufacturing/processing, etc., can solve the impact on performance and cost, reduce the stability of mass manufacturing, and do not solve the size of the proton exchange membrane, etc. problem, to achieve the effect of high yield and excellent dimensional stability

Inactive Publication Date: 2012-07-04
武汉理工新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The above-mentioned inventions did not solve the problems of dimensional deformation of the proton exchange membrane and composite defects of the catalyst layer during the process of catalyst coating or hot pressing, which reduced the stability of batch-manufacturing of CCM products and ultimately affected Therefore, how to improve the mass manufacturability of CCM products is the primary issue for each fuel cell manufacturer

Method used

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  • Method for continuously manufacturing 3-CCM (three Catalyst Coated Membranes) of fuel cell
  • Method for continuously manufacturing 3-CCM (three Catalyst Coated Membranes) of fuel cell
  • Method for continuously manufacturing 3-CCM (three Catalyst Coated Membranes) of fuel cell

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Embodiment 1

[0039] figure 1 An exemplary embodiment of the invention is described, as shown in the drawings. The manufacturing method system includes: two sets of unwinding systems, three sets of winding systems, two sets of composite systems, two sets of bonding systems and a process control system.

Embodiment approach

[0041] First, the proton exchange membrane is treated with 2wt% hydrogen peroxide and 0.02M dilute sulfuric acid to remove surface pollutants, and then it is washed with deionized water for more than 3 times, dried and wound to obtain the proton exchange membrane for use; catalyst slurry The preparation of the material is to use deionized water: 5wt% perfluorosulfonic acid solution: Pt / C (Pt loading 10wt%) catalyst to mix according to the mass ratio of 6:5:1, obtain after ultrasonic stirring, and set aside;

[0042] Put the proton exchange membrane 2 through the above-mentioned pretreatment into the proton exchange membrane unwinding station 1, put the weakly viscous PET-like first protective film 4 into the first protective film unwinding station 12, and unwind the two. Roll action, the two are pasted by the ground 1 pasting station 3; and then the pasting of the two is carried out by catalyst coating through the first catalyst composite station 5 equipped with a catalyst, so ...

Embodiment 2

[0044] figure 2 Described the typical embodiment in the 2nd of the present invention, as shown in the figure, compared with embodiment 1, its difference is that proton exchange membrane 2 is to utilize proton exchange membrane solution online coating station, i.e. tape casting Bit 18 is obtained.

[0045] The implementation method is as follows:

[0046] Concentrate the 5wt% perfluorosulfonic acid solution to 7wt%~10wt% under vacuum at a temperature of 40~100°C, set aside, and then prepare the catalyst slurry: use deionized water: 5wt% perfluorosulfonic acid solution: Pt / C (Pt loading 20wt%) catalyst is mixed according to the mass ratio of 6:5:1, obtained after ultrasonic stirring, and is ready for use;

[0047] Put the PET-type first protective film 4 into the first protective film unwinding station 12 to perform the unwinding action, add the concentrated perfluorosulfonic acid solution to the tape casting station 18, through the tape casting process Form a film on the 1...

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Abstract

The invention discloses a method for continuously manufacturing 3-CCM (three Catalyst Coated Membranes) of a fuel cell. The method is characterized by comprising the following step of: under a condition that a protective membrane is adhered on one side of a proton exchange membrane, compositing a catalyst on the other side of the proton exchange membrane by utilizing a process manner, such as a direct coating manner, a printing manner, an indirect coating manner, a spray coating manner, a slit extrusion manner and a physicochemical deposition manner. The method for continuously manufacturing the 3-CCM of the fuel cell, disclosed by the invention, has the advantages that: (1) coil-to-coil easy continuous batch manufacturing can be realized; (2) the size precision is better and composite defects are fewer in the manufacturing procedure because the proton exchange membrane adhered with the protective membrane has excellent size stability in a compositing process of a catalyst layer and the proton exchange membrane; and (3) the manufacturing of the 3-CCM of the fuel cell with slotted catalyst layer can be continuously realized. When the 3-CCM are manufactured by utilizing the method for continuously manufacturing the 3-CCM of the fuel cell, disclosed by the invention, batch production is easier, and the yield is higher at the same time.

Description

technical field [0001] The invention relates to a continuous manufacturing process technology of a fuel cell three-layer core component (3-CCM). Background technique [0002] Due to its high efficiency, low pollution, high reliability and easy maintenance and many other advantages, fuel cells are known as the fourth generation of power generation devices after hydraulic power, thermal power and nuclear power. The proton exchange membrane fuel cell (PEMFC) is one of the most widely adaptable fuel cell types. PEMFC is currently a relatively mature technology that can convert hydrogen and oxygen in the air into clean water and release electricity. Since it uses hydrogen, a renewable energy resource, and generates water as a reactant, zero emissions are achieved. The core component (Catalyst Coated Membrane, CCM) used in PEMFC is a technology developed in recent years that is different from the traditional membrane electrode assembly (Membrane Electrode Assembly, MEA) structur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/10H01M8/1069
CPCY02E60/521Y02E60/50Y02P70/50
Inventor 潘牧李笑晖胡阿勇柯群宛朝辉陈磊
Owner 武汉理工新能源有限公司
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