Polymer electrolyte composition, electrolyte membrane, membrane-electrode assembly and fuel cell

一种组合物、聚合物的技术，应用在固体电解质燃料电池、燃料电池、燃料电池的零部件等方向，能够解决燃料电池故障等问题，达到改善阳离子传导性、优异溶解特性的效果

Active Publication Date: 2014-11-26
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In extreme cases, it could also lead to fuel cell failure

Method used

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  • Polymer electrolyte composition, electrolyte membrane, membrane-electrode assembly and fuel cell
  • Polymer electrolyte composition, electrolyte membrane, membrane-electrode assembly and fuel cell
  • Polymer electrolyte composition, electrolyte membrane, membrane-electrode assembly and fuel cell

Examples

Experimental program
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Effect test

preparation Embodiment 1

[0207] Preparation Example 1 Formation of Hydrocarbon-Based Sulfonated Block Copolymers

[0208] Hydroquinonesulfonic acid potassium salt (0.9 equiv), 4,4'-difluorobenzophenone (0.97 equiv) and 3,5-bis(4-fluorobenzoyl)phenyl (4-fluorophenyl) Methanone (0.02 eq) was placed in a 1 L round bottom flask equipped with a Dean-Stark trap and condenser in dimethyl sulfoxide (DMSO) and benzene solvent using potassium carbonate as catalyst under nitrogen atmosphere Prepare the mixture. Next, the reaction mixture was stirred in an oil bath at a temperature of 140 °C for 4 hours to allow the azeotrope to adsorb onto the molecular sieve of the Dean-Stark trap, then the mixture was removed while the benzene was refluxed, and the reaction temperature was increased to The condensation polymerization reaction was carried out at 180° C. for 20 hours. After the reaction was complete, the temperature of the reactant was reduced to 60°C, and then, 4,4'-difluorobenzophenone (0.2275 equivalents)...

preparation Embodiment 2

[0209] Preparation Example 2 Preparation of Polymer Electrolyte Composition

[0210] 38 g of dimethyl sulfoxide was prepared as a first solvent, and 2 g of water was prepared as a second solvent, which were mixed and stirred for 2 hours to prepare a heterogeneous solvent. Subsequently, 10 g of the hydrocarbon-based sulfonated block type copolymer prepared in Preparation Example 1 was dissolved in the heterogeneous solvent, filtered with a BORU glass filter (pore size 3) to remove impurities and the like, and then, prepared A polymer electrolyte composition solution was obtained.

preparation Embodiment 3

[0211] Preparation Example 3 Preparation of Electrolyte Membrane

[0212] On a clean bench, using a scraper on the horizontal plate of a film scraper, the solution prepared in Preparation Example 2 was cast on a substrate to form a polymer film, and then the film was kept at a temperature of 50° C. for 2 hours to Proceed to a gentle roast. After that, the membrane was dried in an oven set at 100° C. for 24 hours to form an electrolyte membrane including the polymer electrolyte composition prepared in Preparation Example 2.

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Abstract

Provided are a polymer electrolyte composition, an electrolyte membrane, a membrane-electrode assembly, and a fuel cell. The polymer electrolyte composition according to one example of implementation according to the present application comprises: a first solvent; a second solvent different from the first solvent; and a polymer that reacts with the first solvent and with the second solvent. The polymer includes a functional group that reacts with the first solvent by a first reaction energy and reacts with the second solvent by a second reaction energy. The second reaction energy is smaller than the first reaction energy.

Description

technical field [0001] The present application relates to a polymer electrolyte composition, an electrolyte membrane, a membrane electrode assembly, and a fuel cell, and more particularly, to a polymer electrolyte composition having excellent dissolution properties for the polymer, an electrolyte membrane using the same, and the like. This application claims priority and benefit from Korean Patent Application No. 10-2012-0027059 filed with the Korean Intellectual Property Office on March 16, 2012, the entire contents of which are incorporated herein by reference. Background technique [0002] A solid polymer type fuel cell (hereinafter sometimes referred to as a "fuel cell") is a power generation device that generates electricity using a chemical reaction of a fuel gas (for example, hydrogen) and oxygen, and is used in the electric appliance industry or the automobile industry, etc. There are high expectations to play a role as a next-generation energy source in the field. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/02C08L101/02H01M8/10
CPCY02E60/521C08J2300/10H01M8/102C08J2387/00H01M2008/1095C08J5/2256H01M8/1027H01M8/1032H01M8/1039H01M8/1081H01M2300/0082C08J5/2268H01M8/103H01M8/1037Y02E60/50Y02P70/50C08L101/12H01M8/02H01M8/10
Inventor 崔盛皓金慧美赵惠星金赫崔溁哲李祥雨鲁台根成京儿金度莹闵敏圭
Owner LG CHEM LTD
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