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Method for manufacturing polymer electrolyte membrane and electrolyte membrane manufactured thereby

A technology of electrolyte membrane and manufacturing method, which is applied in the direction of final product manufacturing, sustainable manufacturing/processing, circuits, etc., and can solve problems such as hindering hydrogen ion conduction, fuel cell performance degradation, and reducing hydrogen ion conductivity

Pending Publication Date: 2022-08-05
KOLON IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] At this time, if the porous reinforcing material is not sufficiently impregnated with the ion conductor, the empty pores hinder hydrogen ion conduction to lower the hydrogen ion conductivity, and there is a problem that this becomes a factor deteriorating the performance of the fuel cell

Method used

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  • Method for manufacturing polymer electrolyte membrane and electrolyte membrane manufactured thereby
  • Method for manufacturing polymer electrolyte membrane and electrolyte membrane manufactured thereby
  • Method for manufacturing polymer electrolyte membrane and electrolyte membrane manufactured thereby

Examples

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Embodiment approach

[0113] Hereinafter, embodiments of the present invention will be described in detail so that those skilled in the art to which the present invention pertains can easily implement the present invention. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein.

Embodiment 1

[0116] (1) An expanded polytetrafluoroethylene (e-PTFE) having a thickness of 10 μm and a porosity of 75% was prepared as a porous support.

[0117] (2) The ionomer dispersion Nafion D2021 was put into distilled water as a dispersion medium to prepare an ionomer dispersion liquid containing Nafion in an amount of 1% by weight.

[0118] (3) The e-PTFE support was put into a chamber where the internal temperature was kept at 50° C. and the relative humidity (RH) of the dispersion medium atmosphere was kept at 90% and kept for 10 minutes so that the e-PTFE support was sufficiently wetted by the dispersion medium wet.

[0119] (4) After that, the wetted e-PTFE support was taken out of the chamber and the ionomer dispersion Nafion D2021 was immersed in the e-PTFE support, which was then dried at 80°C for 1 hour and dried at 150°C The heat treatment was performed for 30 minutes to produce a polymer electrolyte membrane with a thickness of 20 μm as a reinforced composite membrane. ...

Embodiment 2

[0121] A polymer electrolyte membrane was produced in the same manner as in Example 1, except that the e-PTFE support was wetted in a chamber whose internal temperature was kept at 80°C.

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Abstract

The present invention relates to a method for manufacturing a polymer electrolyte membrane and a polymer electrolyte membrane manufactured thereby. The method comprises the steps of: (a) preparing a porous support comprising a plurality of pores; (b) preparing an ionic conductor dispersion solution by dispersing an ionic conductor in a dispersion medium; (c) contacting the dispersion medium with the porous support to wet the dispersion medium on the porous support; and (d) introducing the ionic conductor onto at least one surface of the porous support by applying the ionic conductor dispersion solution onto the porous support wetted with the dispersion medium.

Description

technical field [0001] The present disclosure relates to a method of manufacturing a polymer electrolyte membrane and a polymer electrolyte membrane manufactured therefrom, and more particularly, to a polymer electrolyte membrane having improved ionic conductivity properties while improving the impregnation properties of ionic conductors The manufacturing method and the polymer electrolyte membrane manufactured therefrom. Background technique [0002] Fuel cells are batteries equipped with a power generation system that directly converts chemical reaction energy such as oxidation / reduction reaction of hydrogen and oxygen contained in hydrocarbon fuel substances such as methanol, ethanol, and natural gas into electrical energy, and due to their eco-friendly properties and High energy efficiency and low pollutant emissions are favored as the next generation of clean energy that can replace fossil energy. [0003] The advantages of such fuel cells are that they can output a wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/1081H01M8/1086H01M8/1058H01M8/1053H01M8/1018
CPCH01M8/1081H01M8/1058H01M8/1053H01M2008/1095H01M8/1069Y02E60/50Y02P70/50
Inventor 金娜玲李瞳熏李殷受朴重华李蕙松
Owner KOLON IND INC
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