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Confinement of functionalized graphene oxide in sulfonated poly (ether ether ketone) nanofibers by coaxial electrospinning for polymer electrolyte membranes
Abstract
Abstract A novel cambiform-like core-shell nanofiber containing sulfonated graphene oxide core is fabricated through coaxial electrospinning method to improve proton conductivity, fuel blocking and inorganics/polymer compatibility for fuel cell applications. As induced by the strong electrostatic force, the sulfonated organosilane functionalized graphene oxide nanosheet is axially elongated to form a unique cambiform-like and highly wrinkled morphology in the core of the sulfonated poly (ether ether ketone) nanofiber, which is evidenced by the transmission electron microscopy images. It provides a forced contact and good dispersion of graphene oxide in the polymer to improve the tensile strength (approximately 2.6 and 1.8 folds of that of the blend monoaxial electrospun and cast membranes, respectively). The wrinkled graphene oxide core contains the sulfonated functional groups and micro-voids which are favorable for water uptake, making the co-spinning membrane exhibit approximately 43.2% and 33.0% increase of water uptake compared with that of the blend monoaxial electrospun and cast membranes, respectively, and thus facilitate the formation of hydrogen bond networks for proton hopping but tortuous pathways for fuel permeation. Accordingly, both lower hydrogen permeation and much higher methanol selectivity (11 folds of that of Nafion 115) are achieved in the co-spinning membrane.
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“DMF is selected as the optimal solvent compared to DMAc, NMP, and DMSO [46,47,48,49].”
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Cited by
Song, Y., Guo, Z., Yin, J., Liu, M., Tolj, I., Grigoriev, S. A., Ge, M., & Sun, C. (2025) · Polymers · doi:10.3390/polym17162181 · Cited by 28
Metadata
- Authors
- Wu, Y., He, G., Wu, X., Yuan, Q., Gong, X., Zhen, D., & Sun, B.
- Affiliations
- Donghua University (CN)
- Dalian University of Technology (CN)
- Corresponding author
- Wu, Yao
- Wu, Xuemei
- Sun, Bin
- Venue
- International Journal of Hydrogen Energy
- Publisher
- Elsevier BV
- Published
- 2019-03
- Volume
- 44
- Issue
- 14
- Pages
- 7494-7504
- ISSN
- 0360-3199 (ISSN-L)
- OpenAlex
- W2916590110
- Cited by
- 40
- References
- 48
- Citations by year
- 2026: 4 · 2025: 4 · 2024: 5 · 2023: 5 · 2022: 4 · 2021: 10 · 2020: 6 · 2019: 2
- FWCI
- 1.98
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- www.elsevier.com/tdm/userlicense/1.0/ (tdm)
- Locations
- International Journal of Hydrogen Energy (publishedVersion)
- Funders
- National Science Foundation of China (21776034, U1663223)
- National Key Research and Development Program (2016YFB0101203)
- Donghua University (LK1609)
- Education Department of the Liaoning Province of China (LT2015007)
- Dalian University of Technology, China (DUT16TD19)
- Changjiang Scholars Program (T2012049)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Fuel Cells and Related Materials
- Physical Sciences › Chemical Engineering › Filtration and Separation › Membrane Separation and Gas Transport
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced Battery Materials and Technologies
- Keywords
- sulfonated poly(ether ether ketone), graphene oxide, coaxial electrospinning, core-shell nanofibers, polymer electrolyte membranes, fuel cell membranes, proton conductivity, methanol crossover, methanol selectivity, water absorption, hydrogen bonding, tensile strength
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