Reinforced composite membranes and method for manufacturing the same

A technology for enhancing composite and composite membranes, applied in chemical instruments and methods, flat products, other household appliances, etc., can solve the problems of long engineering time, limited thin film, difficult large-scale manufacturing, etc., to save production time and production. Cost, improvement in mechanical strength, and the effect of realizing large area

Active Publication Date: 2017-08-04
KOREA INST OF ENERGY RES
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing impregnation method is difficult for large-area manufacturing and takes a long time, and damage to the reinforced support often occurs, and the electrolyte impregnation is not easy to be uniform.
In addition, depending on the type of support, the interfacial adhesion between the electrolyte and the support changes, and there is a problem that it is difficult to adjust the interfacial adhesion
In particular, reinforced composite membranes currently used in vehicles use very thin membranes with a thickness of 20 μm or less in order to improve the performance of fuel cells. Therefore, with the existing methods, there are restrictions on thinning due to electrolyte remaining on the surface

Method used

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  • Reinforced composite membranes and method for manufacturing the same
  • Reinforced composite membranes and method for manufacturing the same
  • Reinforced composite membranes and method for manufacturing the same

Examples

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preparation example Construction

[0059] The invention relates to a method for preparing a reinforced composite membrane. The preparation method can improve the interface stability between electrolytes or reinforced supports, improve the penetration force in the reinforced support body of the electrolyte, and provide reinforced composite membranes with a high electrolyte impregnation rate. membrane. The preparation method refers to Figure 2 to Figure 6 Be explained.

[0060] According to one embodiment of the present invention, figure 2 It is a flow chart exemplarily showing a method for preparing a reinforced composite membrane according to an embodiment of the present invention. exist figure 2 Among them, the preparation method may include: preparation step S100 of the electrolyte sheet; preparation step S200 of the porous support; configuration step S300; transfer step S400 and separation step S500.

[0061] refer to image 3 Be explained, image 3 It exemplarily shows the preparation process of th...

Embodiment 1-4

[0090] As shown in Table 1, after thinly spraying 0.3ml of butanol on the electrolyte membrane of the electrolyte sheets of production examples 1 and 2, a pressure of 3 bar was applied at 80-100°C by a roller press, thereby Three-layer reinforced composite membranes in which the electrolyte membranes of Production Examples 1 and 2 were formed were prepared on both sides of the pretreated porous supports of Production Examples 3 and 4. For the prepared reinforced composite membrane, the solvent was removed at a temperature of 70° C. for 8 hours to obtain a reinforced composite membrane with a thickness of 20±5 μm (Table 2).

[0091] 【Table 1】

[0092]

[0093] 【Table 2】

[0094] Thickness of reinforced composite film (μm) Example 1 21 Example 2 19 Example 3 20 Example 4 22

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Abstract

Provided are a reinforced composite membrane and a method of manufacturing the reinforced composite membrane, and more particularly, a reinforced composite membrane including a porous support layer; and an electrolyte membrane layer formed on one surface or each of both surfaces of the porous support layer, at least a portion of the porous support layer being impregnated with an electrolyte, and a method of manufacturing the reinforced composite membrane. The reinforced composite membrane may enhance an interfacial adhesive force between a support and the electrolyte membrane layer, and may be manufactured on a continuous mass production.

Description

technical field [0001] The invention relates to a reinforced composite membrane and a method for preparing the same. Background technique [0002] One of the core components constituting the fuel cell is the Polymer Electrolyte Membrane (PEM), which is a part that actually performs hydrogen ion conduction in the fuel cell, and is an important part that determines not only the performance of the fuel cell but also the economy. Although the commercialized perfluorinated electrolyte membrane has excellent mechanical strength and electromechanical chemical properties, the complicated manufacturing process makes it more expensive. Due to the low glass transition temperature of the fluorinated structure, it has been pointed out to have disadvantages. In order to overcome these shortcomings, hydrocarbon polymers are being actively developed, and compared with perfluorinated electrolyte membranes, they can be manufactured at a lower production unit price, and thermally more stable h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/18B32B27/28B32B27/32B32B27/34B32B3/24B29D7/01
CPCB29D7/01B32B3/266B32B27/08B32B27/18B32B27/281B32B27/32B32B27/322B32B27/34B32B2250/24B32B2250/40B32B2260/02B32B2260/046B32B2457/18H01M8/1053H01M8/1055H01M8/106H01M8/1062H01M8/188Y02E60/50Y02P70/50H01M8/1023H01M8/1027H01M8/1032H01M8/1039H01M8/1081H01M8/1093H01M2008/1095H01M2250/20Y02T90/40
Inventor 裵柄赞李惠珍任成大金昌洙李元龙朴究坤梁台铉朴奭熹金旼缙孙荣俊金承坤
Owner KOREA INST OF ENERGY RES
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