Anion exchange membrane based on aromatic polymer functionalized with imidazolium group, preparation method thereof, and vanadium redox flow battery including the membrane
AssigneeResearch & Business Foundation Sungkyunkwan University
InventorsDuk Joon KIM, Yeon Ho AHN
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Abstract
Disclosed are an anion exchange membrane based on an aromatic polymer functionalized with an imidazolium group, a preparation method thereof, and a vanadium redox flow battery including the membrane. The anion exchange membrane based on an aromatic polymer functionalized with an imidazolium group contains a compound represented by a following Chemical Formula 1:
Claims15
An anion exchange membrane based on an aromatic polymer functionalized with an imidazolium group, the membrane containing a compound represented by a following Chemical Formula 1:
A method for preparing an anion exchange membrane based on an aromatic polymer functionalized with an imidazolium group, the method comprising:
- reacting polyarylene ether ketone (PAEK) represented by a following Chemical Formula 2 and 1-(3-aminopropyl)imidazole (API) represented by a following Chemical Formula 3 with each other to obtain a reaction product, and adding iodomethane (CH3I) thereto to activate an imidazolium group therein;
- immersing the product having the activated imidazolium group into sodium hydroxide solution to substitute iodine ions (I−) with hydroxide ions (OH−) to synthesize a compound represented by a following Chemical Formula 1;
- and
- forming a membrane containing the compound represented by the following Chemical Formula 1:
- wherein in the Chemical Formula 2, n is an integer of 65 to 95,
A method for preparing an anion exchange membrane based on an aromatic polymer functionalized with an imidazolium group, the method comprising:
- reacting polyarylene ether ketone (PAEK) represented by a following Chemical Formula 2 and N-hydroxysuccinimide (NHS) represented by a following Chemical Formula 4 to synthesize an intermediate compound represented by a following Chemical Formula 4-1;
- reacting the intermediate compound with 1-(3-aminopropyl)imidazole (API) represented by a following Chemical Formula 3 to obtain a reaction product, and adding iodomethane (CH3I) thereto to activate an imidazolium group therein;
- immersing the product having the activated imidazolium group into sodium hydroxide solution to substitute iodine ions (I−) with hydroxide ions (OH−) to synthesize a compound represented by a following Chemical Formula 1;
- and
- forming a membrane containing the compound represented by the following Chemical Formula 1:
- wherein in the Chemical Formula 2, n is an integer of 65 to 95,
- wherein in the Chemical Formula 4-1, n is an integer of 65 to 95.
Dependencies are inferred from the claim text.