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Ultrafast Proton Conduction in an Aqueous Electrolyte Confined in Adamantane-like Micropores of a Sulfonated, Aromatic Framework

DOI zum Zitieren der Version auf EPub Bayreuth: https://doi.org/10.15495/EPub_UBT_00007637
URN to cite this document: urn:nbn:de:bvb:703-epub-7637-4

Title data

Winterstein, Simon ; Privalov, Alexei F. ; Greve, Christopher ; Siegel, Renée ; Pötzschner, Björn ; Bettermann, Michael ; Adolph, Lea ; Timm, Jana ; Marschall, Roland ; Rößler, Ernst ; Herzig, Eva M. ; Vogel, Michael ; Senker, Jürgen:
Ultrafast Proton Conduction in an Aqueous Electrolyte Confined in Adamantane-like Micropores of a Sulfonated, Aromatic Framework.
In: Journal of the American Chemical Society. Vol. 145 (2023) Issue 50 . - pp. 27563-27575.
ISSN 1520-5126
DOI der Verlagsversion: https://doi.org/10.1021/jacs.3c09257

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Project information

Project title:
Project's official title
Project's id
Integriertes Graduiertenkolleg „Transport in strukturierten Materialien“ (MGK)
492723217

Project financing: Deutsche Forschungsgemeinschaft

Abstract

Sulfonated, cross-linked porous polymers are promising frameworks for aqueous high-performance electrolyte-host systems for electrochemical energy storage and conversion. The systems offer high proton conductivities, excellent chemical and mechanical stabilities, and straightforward water management. However, little is known about mass transport mechanisms in such nanostructured hosts. We report on the synthesis and postsynthetic sulfonation of an aromatic framework (SPAF-2) with a 3D-interconnected nanoporosity and varying sulfonation degrees. Water adsorption produces the system SPAF-2H20. It features proton exchange capacities up to 6 mequiv g–1 and exceptional proton conductivities of about 1 S cm–1. Two contributions are essential for the highly efficient transport. First, the nanometer-sized pores link the charge transport to the diffusion of adsorbed water molecules, which is almost as fast as bulk water. Second, continuous exchange between interface-bound and mobile species enhances the conductivities at elevated temperatures. SPAF-2H20 showcases how to tailor nanostructured electrolyte-host systems with liquid-like conductivities.

Further data

Item Type: Article in a journal
DDC Subjects: 500 Science > 530 Physics
Institutions of the University: Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Juniorprofessor Experimental Physics VII - Dynamics and Structure Formation
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Juniorprofessor Experimental Physics VII - Dynamics and Structure Formation > Juniorprofessor Experimental Physics VII - Dynamics and Structure Formation - Juniorprof. Dr. Eva M. Herzig
Research Institutions > Collaborative Research Centers, Research Unit > SFB 1585 - MultiTrans – Structured functional materials for multiple transport in nanoscale confinements
Research Institutions
Research Institutions > Collaborative Research Centers, Research Unit
Language: English
Originates at UBT: Yes
URN: urn:nbn:de:bvb:703-epub-7637-4
Date Deposited: 26 Mar 2024 09:29
Last Modified: 26 Mar 2024 09:30
URI: https://epub.uni-bayreuth.de/id/eprint/7637

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