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Ion exchange membrane and energy storage device comprising same

An ion exchange membrane, energy storage device technology, applied in electrochemical generators, fuel cells, regenerative fuel cells, etc., can solve the problems of complex synthesis methods, difficult mass production, and reduced ion exchange membrane efficiency, and prevent deterioration. , the effect of preventing ion penetration and improving voltage efficiency

Pending Publication Date: 2020-10-30
KOLON IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] However, the above-mentioned membranes are expensive, and the synthesis method is complicated, thus it is difficult to produce on a large scale
In addition, in electric energy systems such as redox flow batteries, the crossover phenomenon occurs and the ion conductivity at high or low temperatures is low, thus, the efficiency as an ion exchange membrane is greatly reduced

Method used

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  • Ion exchange membrane and energy storage device comprising same
  • Ion exchange membrane and energy storage device comprising same
  • Ion exchange membrane and energy storage device comprising same

Examples

Experimental program
Comparison scheme
Effect test

manufacture Embodiment 1

[0224] [Manufacturing Example 1: Manufacture of Ion Conductor]

manufacture Embodiment 1-1

[0226] 1) Making hydrophobic repeating units

[0227] As shown in Scheme 3 below, in the presence of potassium carbonate, bisphenol A and 1,3-bis(4-fluorobenzoyl)benzene were reacted at 160°C to 180°C for 30 hours, drained into purified water for washing, and dried using hot air. At this time, in order to adjust the degree of polymerization of the oligomer, Carother's equation was used.

[0228] [reaction formula 3]

[0229]

[0230] 2) Manufacture of hydrophilic repeating units

[0231] As shown in Equation 4 below, in the presence of potassium carbonate, 4,4'-(9-fluorenylene)bisphenol and bis(4-fluorophenyl)sulfone were prepared at 160°C using a co-solvent of DMAc / toluene It was reacted at 180° C. for 30 hours, discharged into purified water for washing, and dried using hot air. At this time, in order to adjust the degree of polymerization of the oligomer, Carother's equation was used.

[0232] [Reaction 4]

[0233]

[0234] 3) Manufacture of polymers

[0...

manufacture Embodiment 1-2

[0239] An ion conductor was produced in the same manner as in Production Example 1-1 except that, unlike Production Example 1-1, a polymer was produced such that the molar ratio of the hydrophilic repeating unit to the hydrophobic repeating unit was 1:2.5.

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Abstract

The present invention relates to an ion exchange membrane and an energy storage device comprising same, wherein the ion exchange membrane comprises: a polymer membrane comprising an ion conductor; andany one ion permeation inhibiting additive selected from the group consisting of a columnar porous metal oxide, crown ether, a nitrogen-containing cyclic compound, and a mixture thereof. In the ion exchange membrane, the size of a channel through which ions permeate is limited or an additive capable of trapping ions is introduced into an ion movement path, so that the permeation of ions is prevented, leading to the improvement of voltage efficiency and the prevention of deterioration.

Description

technical field [0001] The present disclosure relates to an ion exchange membrane and an energy storage device including the ion exchange membrane, and more particularly, to an ion exchange membrane, a method for manufacturing the ion exchange membrane, and an energy storage device including the ion exchange membrane. The ion exchange membrane includes additives capable of restricting the size of channels through which ions permeate or trapping ions on a path where ions move, thereby preventing ion permeation, thereby improving voltage efficiency and preventing deterioration. Background technique [0002] In order to solve problems associated with depletion of fossil fuels and environmental pollution, efforts have been made to improve efficiency in use, thereby saving fossil fuels, and applying renewable energy to a wide range of fields. [0003] Renewable energy sources such as solar and wind power have been used more efficiently than before; however, these sources are inte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/1051H01M8/1067H01M8/1053H01M8/1058H01M8/18
CPCH01M8/1053Y02E60/50H01M8/188H01M8/1009H01M2008/1095H01M8/1023H01M8/1039H01M8/1048H01M8/1055H01M8/1051H01M8/1058H01M8/1067H01M8/18
Inventor 朴重华李瞳熏金娜玲李殷受廉承辑
Owner KOLON IND INC