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Polymeric MEA for fuel cell

A polyelectrolyte and mixture technology, applied in fuel cells, fuel cell components, solid electrolyte fuel cells, etc., can solve problems such as unsatisfactory dimensional stability, low proton conductivity, low membrane/electrode interface stability, etc.

Inactive Publication Date: 2009-11-11
HYUNDAI MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high water content upon hydration, these alternative materials exhibit low proton conductivity, low membrane / electrode interface stability, and undesirable dimensional stability.

Method used

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  • Polymeric MEA for fuel cell
  • Polymeric MEA for fuel cell
  • Polymeric MEA for fuel cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0146] Example 1: Preparation of polyelectrolyte membrane comprising sulfonated polysulfone ketone copolymer

[0147] Synthesis of Sulfonated Polysulfone Ketone Copolymer

[0148] In a 100 ml 3-bulb flask equipped with a Dean-Stark trap and condenser, 0.01 mole of bisphenol A, 0.005 mole of 4,4'-difluorobenzophenone and 0.005 mole of 3 , 3'-disodiumsulfonyl-4,4'-difluorophenylsulfone was dissolved in 15 ml of N-methylpyrrolidone (NMP). Subsequently, 0.00002 mol of tris-4-hydroxyphenylethane (0.2 mol% based on bisphenol A) was added.

[0149] Join K 2 CO 3 (0.026 mol), heated to 70° C., and 10 ml of toluene was added, reflux reaction was carried out for 5 hours, and the generated water was removed.

[0150] After removing water, heat to 160°C to remove toluene. Subsequently, the reaction was further performed at 160° C. for about 6 hours to prepare a sulfonated polysulfoneketone copolymer.

[0151] The sulfonated polysulfoneketone copolymer thus prepared was precipita...

Embodiment 2

[0154] Example 2: Preparation of Polyelectrolyte Membrane Comprising 1% by Weight PVDF

[0155] A hybrid membrane was prepared in the same manner as in Example 1, except that 1% by weight of PVDF based on the sulfonated polysulfoneketone copolymer was introduced.

Embodiment 3

[0156] Example 3: Preparation of a polyelectrolyte membrane comprising 1.5% by weight PVDF

[0157] A hybrid membrane was prepared in the same manner as in Example 1, except that 1.5% by weight of PVDF based on the sulfonated polysulfoneketone copolymer was introduced.

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Abstract

A polymeric electrolyte membrane for a polymer electrolyte membrane fuel cell comprises: (a) a sulfonated polysulfoneketone copolymer comprising an aromatic sulfone repeating unit, an aromatic ketone repeating unit and an aromatic compound repeating unit which connects said repeating units with an ether linkage, wherein the aromatic sulfone repeating unit, the aromatic ketone repeating unit or both have a sulfonic acid or sulfonate substituent; and (b) one or more polymers each comprising a monomer selected from the group consisting of vinylidene fluoride, hexafluoropropylene, trifluoroethylene and tetrafluoroethylene.

Description

[0001] Cross References to Related Applications [0002] This application claims priority under U.S.C. §119(a) to Korean Patent Application No. 10-2008-0043030 filed May 8, 2008, which is hereby incorporated by reference in its entirety. technical field [0003] The present invention relates to polyelectrolyte membranes for polymer electrolyte membrane fuel cells (PEMFC) with improved membrane / electrode interface stability. Background technique [0004] With the recent rapid development of information and communication technology and the development of various products, mobile electronic devices such as mobile phones, notebook computers, personal digital assistants (PDAs), digital cameras, and camcorders Technology grows fast. The development of technologies related to mobile electronic devices has resulted in highly functional mobile electronic devices designed to satisfy consumers' demand for more information. However, highly functional mobile electronic devices consume ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L71/10H01M8/10H01M8/02C08L27/12
CPCC08G65/4056H01M8/1027C08J5/2256H01M8/103H01M8/1011Y02E60/521C08G75/23C08G65/4012C08L2205/05H01M2300/0082H01M8/1039C08J2381/06H01M8/1032Y02E60/50C08G61/12C08G75/20H01M8/10
Inventor 赵基允黄仁哲金东一李周浩
Owner HYUNDAI MOTOR CO LTD