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Composite electrolyte membrane

A composite electrolyte and polymer membrane technology, applied in solid electrolyte fuel cells, circuits, fuel cells, etc., can solve the problems of unavoidable performance degradation and achieve the effect of highlighting methanol repellency and excellent hydrogen ion conductivity

Inactive Publication Date: 2006-12-27
SAMSUNG SDI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is notoriously incapable of preventing performance degradation

Method used

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  • Composite electrolyte membrane
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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0059] The composite electrolyte membrane according to the present invention can be prepared by the preparation method of the composite electrolyte membrane according to the present invention.

[0060]An emulsifier having a low molecular weight is inserted into a sublayer of the layered inorganic material so that the polymer resin can easily penetrate. The layered inorganic materials treated as above are called 'organized inorganic layered materials'. Then, the sublayers are exfoliated by using a solution method, a polymerization method, a composite method, or the like. The solution method comprises: (a) dispersing the sublayers by dipping the organized inorganic layered material into a polymer solution so as to intercalate the solvent into the sublayers of the organized inorganic layered material, and ( b) Dispersing the sublayers in the polymer resin during drying thereof. The polymerization process comprises: (a) intercalating monomers into sublayers of the organicized in...

Embodiment

[0084] Synthesis of α-zirconium phosphate

[0085] α-zirconium phosphate having an average particle size of 200 nm was synthesized by reacting 5 g of zirconyl chloride with 5.49 g of phosphoric acid in a reflux reactor for 24 hours. The XRD pattern and electron micrograph of the obtained α-zirconium phosphate are shown in Figure 4 with Figure 5 middle.

[0086] Growth of α-zirconium phosphate particles

[0087] The α-zirconium phosphate thus obtained was treated with orthophosphoric acid for three consecutive days to increase the average particle size of the α-zirconium phosphate to 2 µm.

[0088] Delamination of α-zirconium phosphate particles

[0089] The thus obtained 0.1 g of α-zirconium phosphate exfoliates were subjected to cold treatment (0° C., 3 to 4 hours) in 0.64 g of TBA to obtain a suspension of exfoliates. The electron micrograph of the obtained zirconium phosphate exfoliation is shown in Image 6 middle.

[0090] Exfoliation layer formation

[0091] Th...

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Abstract

A new composite electrolyte membrane that has excellent hydrogen ion conductivity, and excellent methanol exclusion, a manufacturing method for such a composite electrolyte membrane, and a fuel cell using such a composite electrolyte membrane are provided. The composite electrolyte membrane comprises a hydrogen ion conductive polymer membrane and an exfoliate layer comprising layered hydrogen ion conductive inorganic materials that are disposed on a surface of the polymer membrane.

Description

technical field [0001] The present invention relates to an electrolyte solution membrane, and more particularly, the present invention relates to a composite electrolyte solution membrane including an organic material and an inorganic material. Background technique [0002] For example, electrolyte membranes are used as ion-transporting media in various electrochemical devices such as fuel cells. [0003] Examples of fuel cells using polymer electrolyte membranes or polymer / inorganic material composite electrolyte membranes are PEMFC (Proton Exchange Membrane Fuel Cell), DMFC (Direct Methanol Fuel Cell) and the like. [0004] Among these batteries, DMFC using methanol solution as fuel is operable at room temperature and can be easily miniaturized and hermetically assembled, so it is widely used as a power source in the following fields: pollution-free automobiles, household Power generation systems, mobile communication equipment, medical equipment, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/22C08L101/12H01M8/10
CPCY02E60/523H01M4/8605H01M8/1011H01M8/1004Y02E60/50Y02P70/50H01M8/02
Inventor 张赫金夏奭金惠庆朴相昱李振圭河信雨
Owner SAMSUNG SDI CO LTD