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Macromolecular electrolyte membrane for a fuel cell, and a membrane electrode binder material and a fuel cell comprising the same

An electrolyte membrane and fuel cell technology, which is applied in the parts of fuel cells, fuel cells, solid electrolyte fuel cells, etc., can solve the problems of no performance and hindering the mixing process.

Active Publication Date: 2012-09-12
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method disadvantageously hampers the mixing process and, in particular, does not show a significant effect

Method used

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  • Macromolecular electrolyte membrane for a fuel cell, and a membrane electrode binder material and a fuel cell comprising the same
  • Macromolecular electrolyte membrane for a fuel cell, and a membrane electrode binder material and a fuel cell comprising the same
  • Macromolecular electrolyte membrane for a fuel cell, and a membrane electrode binder material and a fuel cell comprising the same

Examples

Experimental program
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Embodiment 1

[0061] Ethylcellulose powder (Dow Inc., ETHOCELTM, substituted with 48-49.5% ethyl) was dispersed in DMSO, and the cellulose was dissociated (decompose) by processing several times in solution using a microfluidizer. ) to form nanofibers. The thus prepared ethylcellulose nanofibers have a diameter of 10-100 nm and a length of 1-10 μm.

[0062] 0.2 parts by weight of the cellulose nanofiber and 99.8 parts by weight of sulfonated polyetheretherketone were added to 2,000 parts by weight of DMSO as a solvent, followed by uniform dissolution. The above solution was coated on a substrate by solution casting using a film applicator to form a film with a thickness of 20 μm, the temperature was slowly raised to 80° C., the film was dried for about 24 hours, and then dried at 120° C. for 24 hours, Proton exchange was performed using sulfonic acid treatment to produce the final polymer electrolyte membrane.

[0063] Dissolve the carbon-supported platinum catalyst (platinum-supported ca...

Embodiment 2

[0065] Except for using 99 parts by weight of sulfonated polyether ether ketone and 1 part by weight of ethyl cellulose nanofibers, a polymer electrolyte membrane, a membrane electrode assembly and a fuel cell were prepared in the same manner as in Example 1.

Embodiment 3

[0067] Except for using 97 parts by weight of sulfonated polyether ether ketone and 3 parts by weight of ethyl cellulose nanofibers, a polymer electrolyte membrane, a membrane electrode assembly and a fuel cell were prepared in the same manner as in Example 1.

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Abstract

The present invention relates to a macromolecular electrolyte membrane for a fuel cell, and to a membrane electrode binder material and a fuel cell comprising the same, and provides a macromolecular electrolyte membrane for a fuel cell comprising a cation exchange resin based on a hydrogen-ion-conducting hydrocarbon and comprising fibrous nanoparticles having a hydrophilic group. By using fibrous nanoparticles having a hydrophilic group in a mixture with a cation exchange resin based on a hydrogen-ion-conducting hydrocarbon, the present invention can provide a macromolecular electrolyte membrane having improved gas-screening properties and long-term durability without reducing the performance of the fuel cell, and can provide a fuel cell which comprises the macromolecular electrolyte membrane.

Description

technical field [0001] The invention relates to a polymer electrolyte membrane used for fuel cells to improve the mechanical properties of the electrolyte membrane. More specifically, the present invention relates to a polymer electrolyte membrane for a fuel cell comprising fibrous nanoparticles having at least one hydrophilic group, thereby improving its mechanical properties, and to a polymer electrolyte membrane comprising the polymer Electrolyte membranes for membrane electrode assemblies and fuel cells. Background technique [0002] Recently, the projected depletion of conventional energy sources such as petroleum and coal has drawn increasing attention to alternative energy sources. In particular, fuel cells are attracting a lot of attention as an energy storage system because they are highly efficient, do not emit pollutants such as NOx and SOx, and use abundant fuel. [0003] A fuel cell is a power generation system that converts energy from a chemical reaction of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/02H01M8/10B82B3/00
CPCH01M8/1004H01M8/1048H01M8/1053H01M2300/0082H01M2300/0091Y02E60/50H01M8/1018
Inventor 金赫崔盛晧成京兒李详雨鲁台根金志洙
Owner LG CHEM LTD
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