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Lee CJ, Hong SJ, Song J, Yoon KS, Oh KH, Lee JY, Yoon SJ, Hong YT, Lee SY, Yu DM, So S. Porous Polyethylene Supports in Reinforcement of Multiblock Hydrocarbon Ionomers for Proton Exchange Membranes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:18834-18845. [PMID: 38091527 DOI: 10.1021/acs.langmuir.3c02540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2023]
Abstract
Hydrocarbon (HC)-based block copolymers have been recognized as promising candidates for proton exchange membranes (PEMs) due to their distinct hydrophilic-hydrophobic separation, which results in improved proton transport compared to that of random copolymers. However, most PEMs derived from HC-based ionomers, including block copolymers, encounter challenges related to durability in electrochemical cells due to their low mechanical and chemical properties. One method for reinforcing HC-based ionomers involves incorporating the ionomers into commercially available low surface tension PTFE porous substrates. Nevertheless, the high interfacial energy between the hydrocarbon-based ionomer solution and PTFE remains a challenge in this reinforcement process, which necessitates the application of surface energy treatment to PTFE. Here, multiblock sulfonated poly(arylene ether sulfone) (SPAES) ionomers are being reinforced using untreated PE on the surface, and this is compared to reinforcement using surface-treated porous PTFE. The PE support layer exhibits a lower surface energy barrier compared to the surface-treated PTFE layer for the infiltration of the multiblock SPAES solution. This is characterized by the absence of noticeable voids, high translucency, gas impermeability, and a physical and chemical stability. By utilizing a high surface tension PE support with a comparable value to the multiblock SPAES, effective reinforcement of the multiblock SPAES ionomers is achieved for a PEM, which is potentially applicable to various hydrogen energy-based electrochemical cells.
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Affiliation(s)
- Chang Jin Lee
- Hydrogen Energy Research Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, South Korea
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 03722, South Korea
| | - Seung Jae Hong
- Hydrogen Energy Research Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, South Korea
| | - Jaeheon Song
- Hydrogen Energy Research Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, South Korea
- Department of Organic and Nano Engineering, Hanyang University, Seoul 04763, South Korea
| | - Kyung Seok Yoon
- R&D Center, W-SCOPE Korea Co., LTD., Cheongju 28122, South Korea
| | - Keun-Hwan Oh
- Hydrogen Energy Research Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, South Korea
| | - Jang Yong Lee
- Hydrogen Energy Research Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, South Korea
| | - Sang Jun Yoon
- Hydrogen Energy Research Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, South Korea
| | - Young Taik Hong
- Hydrogen Energy Research Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, South Korea
| | - Sang-Young Lee
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 03722, South Korea
| | - Duk Man Yu
- Hydrogen Energy Research Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, South Korea
| | - Soonyong So
- Hydrogen Energy Research Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, South Korea
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Effect of dispersing solvents for ionomers on the performance and durability of catalyst layers in proton exchange membrane fuel cells. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138971] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Choi J, Kyeong M, Kim M, Lee SS, Seo B, Park HS, Park HY, Henkensmeier D, Lee SY, Kim HJ. Synthesis of Sulfonated Poly(Arylene Ether Sulfone)s Containing Aliphatic Moieties for Effective Membrane Electrode Assembly Fabrication by Low-Temperature Decal Transfer Methods. Polymers (Basel) 2021; 13:1713. [PMID: 34073878 PMCID: PMC8197277 DOI: 10.3390/polym13111713] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 05/14/2021] [Accepted: 05/14/2021] [Indexed: 12/02/2022] Open
Abstract
The purpose of this study was to investigate the effect of the aliphatic moiety in the sulfonated poly(arylene ether sulfone) (SPAES) backbone. A new monomer (4,4'-dihydroxy-1,6-diphenoxyhexane) was synthesized and polymerized with other monomers to obtain partially alkylated SPAESs. According to differential scanning calorimetry analysis, the glass transition temperature (Tg) of these polymers ranged from 85 to 90 °C, which is 100 °C lower than that of the fully aromatic SPAES. Due to the low Tg values obtained for the partially alkylated SPAESs, it was possible to prepare a hydrocarbon electrolyte membrane-based membrane electrode assembly (MEA) with Nafion® binder in the electrode through the use of a decal transfer method, which is the most commercially suitable system to obtain an MEA of proton exchange membrane fuel cells (PEMFCs). A single cell prepared using this partially alkylated SPAES as an electrolyte membrane exhibited a peak power density of 539 mW cm-2.
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Affiliation(s)
- Jieun Choi
- Center for Hydrogen and Fuel Cell Research, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea; (J.C.); (M.K.); (B.S.); (H.S.P.); (H.-Y.P.); (D.H.)
| | - Minkyu Kyeong
- Center for Hydrogen and Fuel Cell Research, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea; (J.C.); (M.K.); (B.S.); (H.S.P.); (H.-Y.P.); (D.H.)
| | - Minsung Kim
- Soft Hybrid Materials Research Center, Korea Institute of Science and Technology, Seoul 02792, Korea; (M.K.); (S.-S.L.)
| | - Sang-Soo Lee
- Soft Hybrid Materials Research Center, Korea Institute of Science and Technology, Seoul 02792, Korea; (M.K.); (S.-S.L.)
| | - Bora Seo
- Center for Hydrogen and Fuel Cell Research, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea; (J.C.); (M.K.); (B.S.); (H.S.P.); (H.-Y.P.); (D.H.)
| | - Hyun Seo Park
- Center for Hydrogen and Fuel Cell Research, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea; (J.C.); (M.K.); (B.S.); (H.S.P.); (H.-Y.P.); (D.H.)
| | - Hee-Young Park
- Center for Hydrogen and Fuel Cell Research, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea; (J.C.); (M.K.); (B.S.); (H.S.P.); (H.-Y.P.); (D.H.)
| | - Dirk Henkensmeier
- Center for Hydrogen and Fuel Cell Research, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea; (J.C.); (M.K.); (B.S.); (H.S.P.); (H.-Y.P.); (D.H.)
| | - So Young Lee
- Center for Hydrogen and Fuel Cell Research, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea; (J.C.); (M.K.); (B.S.); (H.S.P.); (H.-Y.P.); (D.H.)
| | - Hyoung-Juhn Kim
- Center for Hydrogen and Fuel Cell Research, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea; (J.C.); (M.K.); (B.S.); (H.S.P.); (H.-Y.P.); (D.H.)
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Al Lafi AG, Hasan R, Al-Kafri N. Sulfonated Cross-Linked Poly(ether ether ketone) Films with Wrinkled Structures: Preparation and Vanadium Ions Permeability. Macromol Res 2019. [DOI: 10.1007/s13233-019-7166-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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