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Preparation process of membrane electrode

A preparation process and membrane electrode technology, which is applied in the field of batch preparation technology of polymer electrolyte fuel cell ordered membrane electrodes, can solve problems such as difficulty in mass production of membrane electrodes with stable and uniform performance, and achieve the goal of maintaining uniformity and reducing Production cost and effect of reducing usage

Active Publication Date: 2017-01-04
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the problem that the existing membrane electrode preparation process is difficult to mass-produce membrane electrodes with stable and uniform performance

Method used

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  • Preparation process of membrane electrode
  • Preparation process of membrane electrode
  • Preparation process of membrane electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] This embodiment provides a preparation process of a membrane electrode, such as figure 1 shown, including the following steps:

[0036] (1) placing the polymer film 1 on a reel to form a conveyor belt for the polymer film 1, and the reel 2 drives the polymer film 1 to be transported in a predetermined direction and rolled;

[0037] As an embodiment of the present invention, in this embodiment, the thickness of the polymer film 1 is 80 μm. As an alternative implementation of the present invention, the thickness of the polymer film 1 can also be 10 μm to 150 μm, all of which can realize the present invention. The purpose of the invention belongs to the protection scope of the present invention.

[0038] The polymer membrane 1 is a cation exchange membrane or an anion exchange membrane. The cation exchange membrane is selected from but not limited to perfluorosulfonic acid membrane, partially fluorinated sulfonic acid membrane, non-fluorosulfonic acid membrane, sulfonate...

Embodiment 2

[0047] This embodiment provides a preparation process of a membrane electrode, comprising the following steps:

[0048] (1) The polymer film is placed on a reel to form a conveyor belt for the polymer film, and the reel drives the polymer film to be transported in a predetermined direction and rolled up; the thickness of the polymer film is 150 μm, and the material is quaternary ammonium Polysulfone membrane.

[0049] (2) A first template and a second template are respectively arranged on both sides of the polymer film plane, and an array pattern is formed by heating and pressing the templates. Both the first template and the second template are cylindrical porous templates, with a pore diameter of 400 nm, a pore spacing of 250 nm, and a pore depth of 1.25 μm;

[0050] In the heating and pressing step: the temperature is 200° C., and the pressure is 50 MPa.

[0051] (3) The array pattern enters the catalyst spraying area, and the array pattern on both sides of the polymer fi...

Embodiment 3

[0054] This embodiment provides a preparation process of a membrane electrode, comprising the following steps:

[0055] (1) The polymer film is placed on a reel to form a conveyor belt for the polymer film, and the reel drives the polymer film to be transported in a predetermined direction and rolled up; the thickness of the polymer film is 10 μm, and the material is sulfonated Polystyrene membrane.

[0056] (2) A first template and a second template are respectively arranged on both sides of the polymer film plane, and an array pattern is formed by heating and pressing the templates. Both the first template and the second template are cylindrical porous templates, with a pore diameter of 225 nm, a pore spacing of 50 nm, and a pore depth of 0.5 μm;

[0057] In the heating and pressing step: the temperature is 50° C., and the pressure is 0.1 MPa.

[0058] (3) The array pattern enters the catalyst spraying area, and the array pattern on both sides of the polymer film is respec...

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Abstract

The invention belongs to the technical field of fuel batteries. A preparation process of a membrane electrode comprises: putting a polymer membrane on a winding shaft to form a conveyor belt of the polymer membrane; driving the polymer membrane to be conveyed toward a pre-set direction and wound through the winding shaft; arranging a first template and a second template at two sides of a plane of the polymer membrane respectively; forming an array pattern on the surface of the polymer membrane through pressurizing and heating the templates; forming catalyst layers at two sides of the polymer membrane; slicing the polymer membrane and carrying out edge sealing treatment. The membrane electrode is molded in one step and has efficient and ordered gas, electron and ion mass transferring channels; contact resistance is effectively reduced and a binding capacity of the electrode and electrolyte is improved; a catalyst directly covers an ordered structural surface layer so that the specific surface area of the catalyst is enlarged and the use amount of the catalyst is reduced. In addition, the preparation process of the membrane electrode is simple in production process, low in cost and high in productivity.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, in particular to a batch preparation process of ordered membrane electrodes of polymer electrolyte fuel cells. Background technique [0002] A fuel cell is a clean energy conversion device that can directly convert chemical energy into electrical energy, using hydrogen or reforming organic compounds as fuel gas. Due to its simple structure, environmental friendliness and pollution-free, high efficiency, low working temperature and many other advantages, it is especially suitable for portable power supply, electric vehicle power supply, distributed power station and energy storage system, etc., and has broad application prospects. The core material of a fuel cell is a membrane electrode (Membrane Electrode Assembly, MEA), and the MEA is a decisive factor for the life, cost and reliability of a fuel cell. [0003] MEA is mainly composed of: anode︱polymer film︱cathode, in which the cathode and a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/10H01M8/1004
CPCH01M8/10H01M8/1004H01M2008/1095Y02E60/50Y02P70/50
Inventor 刘锋赵鹏程肖宇牛萌杜兆龙
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD