# Fileset

[20240405_Abstract Submission2.pdf](https://mdr.nims.go.jp/filesets/68164902-47a0-4075-a52c-44686125d4c4/download)

## Creator

[金 済徳](https://orcid.org/0000-0003-4301-1044)

## Rights

[In Copyright](http://rightsstatements.org/vocab/InC/1.0/)

## Other metadata

[Sulfonated Poly(phenylene sulfone)s with High Ion Exchange Capacity](https://mdr.nims.go.jp/datasets/1903eac5-545f-4204-8776-60f424001f1a)

## Fulltext

Abstract Submission2024/04/05 15:45 Submission Completedhttps://ecs.confex.com/ecs/prime2024/i/papers/index.cgi?sessionid=25333&username=190321&password=954105 1/2 Your abstract submission has been receivedClick here  to print this page now.You have submitted the following abstract to PRiME 2024 (October 6-11, 2024). Receipt of this notice doesnot guarantee that your submission was complete, free of errors, or accepted for presentation.Sulfonated Poly(phenylene sulfone)s with High Ion Exchange CapacityJ. Kim (National Institute for Materials Science)Abstract Text:Abnormal phenomena caused by climate change require the realization of carbon neutrality while ensuringa stable supply of energy (energy security). Climate change is mainly caused by environmental pollutionfrom human society, and in recent years, research and development of environmentally friendly materialsfor practical use has been carried out.Energy devices such as fuel cells, water electrolysis, and RFB have polymer electrolyte components thattransport ions, and up until now, fluorine-based electrolytes such as Nafion have been mainly used.However, within the framework aiming to achieve carbon neutrality, the development of materialscontaining fluorine is thought to be subject to restrictions. Therefore, there is a need for alternativematerials to fluorine-based electrolytes.We are conducting research aimed at the practical application of sulfonated PPSU, a hydrocarbonelectrolyte, as a non-fluorine electrolyte [1-6]. In this study, we report the synthesis and properties ofsulfonated PPSU with high ion exchange capacity (IEC) (calculated value: 5.55meq/g), which has foursulfo groups per repeating unit of PPSU.SPPSU (2S), which has two sulfo groups per repeating unit of PPSU (IEC=3.57meq/g), was obtained bysulfonation of bis(4-fluorophenyl)sulfone using 30% Oleum. Next, polymerization was performed bycondensation reaction of sulfonated bis(4-fluorophenyl)sulfone (SFPS) and 4,4'-biphenol (BP).Furthermore, by sulfonating these polymers in sulfuric acid, SPPSU (4S) having four sulfo groups perrepeating unit (IEC=5.55meq/g) was synthesized. The molecular weight of SPPSU(4S) was 130,304 –303,203. Depending on the sulfonation conditions using SPPSU(2S) polymer and sulfuric acid, theviscosity of SPPSU(4S) was 30 to 270 mP·s, which was higher than that of Nafion (D520CS), which was10 to 40 mPa·s. In addition, the tensile strength, tensile elongation, and flexural modulus of SPPSU (4S)were 22 MPa, 251%, and 296 MPa. Compared to Nafion 212, it exhibited high tensile strength and flexuralmodulus while having similar tensile elongation properties. Furthermore, the conductivity of SPPSU (4S)was 11.3 mS/cm at 120°C and RH 10%. This value was approximately 4 times higher than the conductivityof Nafion212 (3.2 mS/cm) under the same conditions.References1. J.D. Kim, A. Donnadio, M. S. Jun, M.L. Di Vona, “Crosslinked SPES-SPPSU membranes for hightemperature PEMFCs”, Int. J. Hyd. Ener., 2013, 38, 1517-1523.2. J.D. Kim, L.-J. Ghil, “Annealing effect of highly sulfonated polyphenylsulfone polymer”, Int. J. Hyd.Ener., 2016, 41, 11794-11800.3. Y. Zhang, J.D. Kim, K. Miyatake, “Effect of thermal crosslinking on the properties of sulfonatedpoly(phenylene sulfone)s as proton conductive membranes”, J. Appl. Poly. Sci., 2016, 133(46)44218-44225.4. J.D. Kim, A. Ohira, H. Nakao, “Chemically crosslinked sulfonated polyphenylsulfone (CSPPSU)membranes for PEM fuel cells”, membranes, 2020, 10, 31-44.5. J.D. Kim, A. Ohira, “Crosslinked sulfonated polyphenylsulfone (CSPPSU) membranes for elevated-temperature PEM water electrolysis”, membranes, 2021, 11, 861-873.6. J.D. Kim, Y. Zhang; Japan patent no. 6548176, EU patent no. EP3340350, US patent no.US1086215.Symposium Selection:I01C - Polymer Electrolyte Fuel Cells and Water Electrolyzers 24 (PEFC&WE 24) - Ionomers, Membranesand Separators for Fuel Cells and ElectrolyzersSubmitter's E-mail Address:2024/04/05 15:45 Submission Completedhttps://ecs.confex.com/ecs/prime2024/i/papers/index.cgi?sessionid=25333&username=190321&password=954105 2/2First Corresponding AuthorDr. Jedeok KimAffiliation(s): National Institute for Materials ScienceAddress:1-1 NamikiTsukuba, Ibaraki, 305-0044JapanPhone Number:E-mail Address: kim.jedeok@nims.go.jpkim.jedeok@nims.go.jpPreferred Presentation Format:PosterIf necessary, you can make changes to your abstract between now and the deadline ofTo review or revise your submission prior to the deadline, click on the link below; you may need to log in again withyour ECS credentials.https://ecs.confex.com/ecs/prime2024/gateway.cgiAny changes that you make will be reflected instantly. You DO NOT need to go through all of the submission stepsin order to change one thing. If you want to change the title, for example, just click "Title" in the abstract controlpanel and submit the new title.When you have completed your submission, you may close this browser window.Tell us what you think of the abstract submittalHome Pagehttps://ecs.confex.com/ecs/prime2024/gateway.cgihttps://ecs.confex.com/ecs/feedback.epl?jsclose=1https://www.electrochem.org/prime2024