Method for manufacturing composite capacitive deionization electrode, composite capacitive deionization electrode, and assembly thereof
A capacitive, desalination technology, used in separation methods, chemical instruments and methods, water/sewage treatment equipment, etc., which can solve the problems of bending characteristics, poor mechanical and chemical properties of strength, low efficiency of desalination ions, damage or desorption, etc. The problem is to reduce the amount of organic solvent, which is conducive to commercialization and convenient operation.
Pending Publication Date: 2021-10-15
锡安泰克株式会社 +1
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[0003] However, in the above-mentioned patent, when the above-mentioned slurry is coated on the carbon electrode layer of the electrode sheet, the binder in the slurry, etc. will penetrate into the pores of the carbon electrode layer so that the pores are reduced, resulting in low efficiency of desalination ions , and due to the excessive use of organic solvents in the preparation of slurry in the process, there is a disadvantage of not being environmentally friendly
[0004] In addition, even in the state where the ion-exchange membrane layer is formed on the carbon electrode layer, mechanical properties such as bending characteristics and strength and chemical properties are still poor, and there are problems such as breakage or desorption, and depending on the characteristics of the fluid that needs to be desalted, there are also There is a problem of shortened lifespan
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[0084] The preparation method of the composite capacitive desalination electrode according to the first embodiment of the present invention may include: step a), step b), step c) and step d).
[0085] Step a) is a step of forming the ion exchange resin layer 122 on the surface of the microporous membrane 121 to prepare the composite microporous membrane 120 .
[0086] Step a) Form ion-exchange resin layer 122 on the surface of microporous membrane 121 There are many ways to prepare composite microporous membrane 120, but in the present embodiment, as Figure 8 As shown, the method of immersing the microporous membrane 121 in the ion exchange resin dissolution tank 50 containing the ion exchange resin solution 51 is used.
[0087] refer to Figure 8 The above step a) is described in more detail. The microporous membrane 121 is unfolded when the wound first microporous membrane winding roller 41 rotates. The ion exchange resin of the solution 51 is discharged after dissolving ...
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Abstract
The present invention relates to a method for manufacturing a composite capacitive deionization electrode having a new structure that can enhance deionization efficiency and has excellent mechanical and chemical resistance, a composite capacitive deionization electrode, and an assembly thereof. The method for manufacturing a composite capacitive deionization electrode according to the present invention comprises the steps of: a) forming an ion exchange resin layer on the surface of a microporous membrane to prepare a composite microporous membrane; and b) forming the composite microporous membrane prepared in step a) on both surfaces of an electrode sheet to prepare a first unit body including the composite microporous membrane and the electrode sheet, wherein the steps are performed by an in-line continuous process in a single process line.
Description
technical field [0001] The invention relates to a preparation method of a composite capacitive desalination electrode, a composite capacitive desalination electrode and components thereof, which can improve desalination efficiency and have a novel structure with more excellent mechanical and chemical resistance. Background technique [0002] The present inventors have conducted extensive research on capacitive deionization (CDI) electrodes having ion-exchange membrane layers. For example, in patents such as Korean Registered Patent Publication No. 10-1410642 (announcement date 2014.06.17), it has been disclosed that a slurry containing ion-exchange resin powder or the like is coated on a carbon electrode layer (active layer) to form an ion-exchange membrane. layer technology. [0003] However, in the above-mentioned patent, when the above-mentioned slurry is coated on the carbon electrode layer of the electrode sheet, the binder in the slurry, etc. will penetrate into the p...
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IPC IPC(8): C02F1/469
CPCC02F1/4691C02F1/46109C02F2001/46138C02F2201/46B32B37/02B32B38/08B32B37/15
Inventor 姜炅硕孙元根金美良李景汉
Owner 锡安泰克株式会社