# Fileset

[20251117_Abstract Submission.pdf](https://mdr.nims.go.jp/filesets/2ba9f1a6-4864-4d7b-a7ec-a3041a6aeb59/download)

## Creator

[J. Kim](https://orcid.org/0000-0003-4301-1044)

## Rights

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

## Other metadata

[Crosslinked sulfonated polyphenylsulfone (CSPPSU) electrolyte membranes for energy device applications](https://mdr.nims.go.jp/datasets/a621dbe3-2db4-4ed7-b0bc-f5e6b42f2635)

## Fulltext

Abstract SubmissionPlease Check Your Abstract One More Time.IMPORTANT: Be aware that the information relating to your abstract will be published exactly as entered below so itis important that you verify it is correct and free of any spelling errors.When you finish, scroll all the way down to the bottom of this page and click "Conclude Submission".Crosslinked Sulfonated Polyphenylsulfone (CSPPSU) Electrolyte Membranes for Energy DeviceApplicationsJ. Kim (National Institute for Materials Science)Abstract Text:The abnormal phenomena caused by global climate change require the construction of a social systemthat can provide a stable supply of energy security while reducing CO2 emissions to zero through carbonneutrality on a global scale. It is believed that the use of renewable energy sources such as solar, wind,and biomass will make it possible to realize a zero-CO2 society. To utilize these energies efficiently, activeresearch is being conducted into energy storage, conversion, and utilization technologies using batteries,solar cells, fuel cells, water electrolysis, and other such technologies. Meanwhile, polymer electrolytemembranes are among the key materials that realize the high performance of fuel cells, water electrolysisdevices, and redox flow battery (RFB). For proton exchange electrolyte membranes, there is a demand forthe development of low-cost, environmentally friendly non-fluorinated materials that have high protonconductivity and high durability under low and high humidity conditions as alternatives to poly- andperfluoroalkyl substances (PFAS).We have developed a polymer electrolyte membrane using polyphenylsulfone (PPSU) as a hydrocarbon-based polymer as a non-fluorinated electrolyte membrane [1 – 7]. A hydrocarbon-based polymerelectrolyte ionomer was synthesized by sulfonating PPSU polymer at different temperatures and times toobtain an ionomer with high ion exchange capacity (IEC=3.5 meq/g, DS=2). The SPPSU electrolytemembrane was prepared by dissolving the SPPSU ionomer in an organic solvent, casting it on a glassplate at 60 °C using a coater device, and obtaining a crosslinked SPPSU (CSPPSU) membrane by athermal process up to 250 °C in an oven. The final membrane was obtained by an activation process in analkaline and acid aqueous solution (wet process) to remove remaining impurities in the crosslinkedmembrane (Fig. 1). The physical and chemical properties of the obtained SPPSU ionomer and CSPPSUmembrane were evaluated. In addition, an membrane electrode assembly (MEA) was produced using aCSPPSU membrane and a fuel cell evaluation was performed. These results allowed us to optimize thesulfonation and crosslinking conditions of the PPSU polymer. These results will be reported on the day.References[1] J. Kim, A. Ohira, H. Nakao, membranes, doi:10.3390/membranes10020031, 10 (2020) 31-45.[2] J. Kim, membranes, doi:10.3390/membranes14080173, 14 (2024) 173-184.[3] J. Kim, A. Ohira, membranes, doi:10.3390/membranes11050330, 11 (2021) 330-342.[4] J. Kim, A. Ohira, membranes, doi:10.3390/membranes11110861, 11 (2021) 861-873.[5] Y. Jang, J. Kim, K. Miyatake, J. Appl. Poly. Sci., doi:10.1002/app.44218, 133 (2016) 44218-44225.[6] J. Kim, Y. Jang, Japan patent no.; 6548176 (2019), EU patent no.: EP3340350 (2020), US patent no.:US1086215 (2020).[7] J. Kim, Japan patent no.: 6652766 (2020), EU patent no.: EP3490043 (2020), US patent no.:US10868322 (2020).2025/11/17 11:50 Submission Proofhttps://ecs.confex.com/ecs/249/i/papers/index.cgi?sessionid=28239&username=214143&password=267256 1/2First Corresponding AuthorDr. Jedeok KimAffiliation(s): National Institute for Materials ScienceAddress:1-1 NamikiTsukuba, Ibaraki, 305-0044JapanPhone Number:E-mail Address: kim.jedeok@nims.go.jpSymposium Selection:I01 - Low-Temperature Water Electrolysis (LT-WE) for Hydrogen Production 4Submitter's E-mail Address:kim.jedeok@nims.go.jpPreferred Presentation Format:PosterFINAL STEPS1. Check spelling and contact information.2. Make necessary corrections:Click any value in the Abstract Control Panel you want to change (e.g., Select Symposium, Title)Edit the information and click the submit button.3. Click here  to print this page now.Conclude Submission2025/11/17 11:50 Submission Proofhttps://ecs.confex.com/ecs/249/i/papers/index.cgi?sessionid=28239&username=214143&password=267256 2/2https://ecs.confex.com/data/abstract/ecs/249/Paper_214143_abstract_124201_0.jpghttps://ecs.confex.com/data/abstract/ecs/249/Paper_214143_abstract_124201_0.jpg