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Polymer electrolyte membrane, membrane electrode assembly comprising polymer electrolyte membrane, and fuel cell comprising membrane electrode assembly

A technology of electrolyte membrane and polymer, applied in fuel cells, composite electrolytes, power system fuel cells, etc., to achieve excellent durability and high ion conductivity

Active Publication Date: 2016-08-10
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, as a side reaction, hydrogen peroxide (H 2 o 2 ) or peroxide radicals, which can lead to degradation of the electrolyte membrane

Method used

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  • Polymer electrolyte membrane, membrane electrode assembly comprising polymer electrolyte membrane, and fuel cell comprising membrane electrode assembly
  • Polymer electrolyte membrane, membrane electrode assembly comprising polymer electrolyte membrane, and fuel cell comprising membrane electrode assembly
  • Polymer electrolyte membrane, membrane electrode assembly comprising polymer electrolyte membrane, and fuel cell comprising membrane electrode assembly

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Embodiment 1

[0154] The impregnation solution was prepared by dissolving 7% by weight of a hydrocarbon-based polymer with an ion exchange capacity (IEC) of 2.16 meq / g in dimethylsulfoxide (DMSO). A support having a thickness of about 5 μm, a porosity of about 80%, and a three-dimensional network structure in which two or more units are regularly distributed is immersed in the impregnating solution. Thereafter, the resultant was dried in an oven at 80° C. for 24 hours to prepare a mixed layer. A solution prepared by dissolving 7% by weight of a hydrocarbon-based polymer having an ion exchange capacity (IEC) of 1.81 meq / g in dimethylsulfoxide (DMSO) was applied on the upper and lower surfaces of the mixed layer , and the resultant was dried in an oven at 80 °C for 24 h to prepare a pure layer. The prepared polymer electrolyte membrane was acid-treated with 10% sulfuric acid at 80° C. for 24 hours, washed with distilled water 4 or more times, and dried at 80° C. to prepare a polymer electrol...

Embodiment 2

[0156] A polymer electrolyte membrane was prepared in the same manner as in Example 1, except that the ion exchange capacity (IEC) of the hydrocarbon-based polymer contained in the impregnation solution was 1.81 meq / g, and a pure layer was not additionally formed.

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Abstract

The present specification provides a polymer electrolyte membrane, a membrane electrode assembly comprising the polymer electrolyte membrane, and a fuel cell comprising the membrane electrode assembly.

Description

technical field [0001] This specification claims priority and benefit from Korean Patent Application No. 10-2013-0144444 filed with the Korean Intellectual Property Office on November 26, 2013, the entire contents of which are hereby incorporated by reference. [0002] The present specification provides a polymer electrolyte membrane, a membrane electrode assembly including the polymer electrolyte membrane, and a fuel cell including the membrane electrode assembly. Background technique [0003] A fuel cell is a high-efficiency power generation device, and has advantages in that compared with existing internal combustion engines, fuel consumption is low due to high efficiency, and it does not generate environmental pollutants such as So x , NO x and VOC) pollution-free energy. Furthermore, a further advantage is that the production facility requires a smaller site area and a short construction period. [0004] Fuel cells thus have a variety of applications covering mobile ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/1053H01M8/1041
CPCH01M8/1004H01M8/1018H01M8/1025H01M8/1027H01M8/103H01M8/1032H01M8/1039H01M8/1041H01M8/1044H01M8/1053H01M8/1058H01M8/1062H01M8/1065H01M8/1067H01M2008/1095H01M2300/0088H01M2300/0094Y02E60/50H01M2250/20H01M2300/0082H01M2300/0091Y02T90/40
Inventor 闵敏圭朴永善金赫崔盛皓李祥雨金度茔
Owner LG CHEM LTD
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