Polymer electrolyte membrane, method of manufacturing the same and fuel cell including the same

A technology of electrolyte membrane and polymer, applied in the direction of solid electrolyte fuel cells, fuel cells, fuel cell components, etc., can solve the problems of lack of ionic conductivity, methanol permeation inhibition ability, etc.

Inactive Publication Date: 2007-08-29
SAMSUNG SDI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional polymer electrolyte membranes do not have satisfactory ioni...

Method used

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  • Polymer electrolyte membrane, method of manufacturing the same and fuel cell including the same
  • Polymer electrolyte membrane, method of manufacturing the same and fuel cell including the same
  • Polymer electrolyte membrane, method of manufacturing the same and fuel cell including the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0126] (1) Synthesis of polyamic acid with reactive end groups

[0127] 10.01g of 4,4'-diaminophenyl ether (ODA) and 57.5g of N-methyl-2-pyrrolidone (NMP) were sequentially added to a 1L round-bottom jacketed reactor, stirred slowly and allowed to Dissolve completely. The jacket temperature of the reactor was maintained at 20° C., and 13.18 g of 4,4′-oxydiphthalic anhydride (ODPA) was slowly added and stirred to dissolve it. Then, the reaction solution was stirred for 2 hours to fully react, then 1.47 g of maleic anhydride (MA) was slowly added, and stirred at room temperature for 16 hours to obtain liquid polyamic acid. The average degree of polymerization of polyamic acid was 35.

[0128] (2) Preparation of polymer electrolyte membrane

[0129] 30 parts by weight of the sulfonated poly(arylene ether sulfone) of formula 2 having an average degree of polymerization of 250, 70 parts by weight of the polyamic acid having reactive end groups prepared in (1) as an ion-conductin...

Embodiment 2

[0133] A polymer electrolyte membrane (membrane thickness: about 34 μm) was prepared in the same manner as in Example 1, except that 40 parts by weight of the sulfonated poly(arylene ether sulfone) having an average degree of polymerization of 250 was used, and 60 parts by weight The polyamic acid having reactive terminal groups prepared in (1) as an ion-conductive polymer.

Embodiment 3

[0135] A polymer electrolyte membrane (membrane thickness: about 36 μm) was prepared in the same manner as in Example 1, except that 50 parts by weight of the sulfonated poly(arylene ether sulfone) having an average degree of polymerization of 250 was used, and 50 parts by weight The polyamic acid having reactive terminal groups prepared in (1) as an ion-conductive polymer.

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PUM

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Abstract

A polymer electrolyte membrane, a method of manufacturing the same, and a fuel cell including the polymer electrolyte membrane are provided, wherein the polymer electrolyte forms an interpenetrating polymer network (IPN) of a polymer by simple blending of a hydrophobic polyimide having a reactive terminal group and a hydrophilic aromatic polymer having ion conductivity. The polymer electrolyte membrane has reduced swelling properties due to highly dense crosslinking of polyimide through the reactive terminal group, shows high ion conductivity at low humidity, and has methanol crossover suppressing ability. Accordingly, a fuel cell with improved electric and mechanical properties can be provided.

Description

technical field [0001] The present invention relates to a polymer electrolyte membrane and a preparation method thereof, and a fuel cell comprising the polymer electrolyte membrane, more particularly, the present invention relates to a polymer electrolyte membrane comprising a polyimide having a reactive end group and its A production method, and a fuel cell including the polymer electrolyte membrane having enhanced ion conductivity and methanol crossover suppression ability due to including polyimide having reactive terminal groups, and a fuel cell including the polymer electrolyte membrane. Background technique [0002] Fuel cells can be classified according to the type of electrolyte used in them. Types of fuel cells include polymer electrolyte membrane fuel cells (PEMFC), phosphoric acid fuel cells, molten carbonate fuel cells, solid oxide fuel cells, and others. The operating temperature of a fuel cell and its constituent materials vary with the type of electrolyte. ...

Claims

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Application Information

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IPC IPC(8): C08L79/08H01M8/02C08J5/22C08L27/12C08L71/10C08L79/00C08L81/06H01B1/06H01B13/00H01M4/92H01M8/10
CPCC08J2300/208H01M2300/0082C08G73/1042H01M8/1027H01M8/1081Y02E60/523H01M8/1032H01M8/1072H01M2008/1095H01M8/1039H01M8/103H01M8/1011H01M8/1025H01M8/1044C08J5/2275H01M8/1023Y02E60/50Y02P70/50B01D35/18B01D35/30B01D2201/202B01D2201/31C02F1/325
Inventor 郑明燮马相国金度鈗李珍珪
Owner SAMSUNG SDI CO LTD
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