Fluorine-Free Polynorbornene Membranes Based on a Sterically Hindered Pyridine for Vanadium Redox Flow Batteries

Stonawski J, Junginger F, Münchinger A, Hager L, Thiele S, Kerres J (2024)

Publication Type: Journal article

Publication year: 2024

Journal

ACS Applied Polymer Materials ACS Publications

DOI: 10.1021/acsapm.4c01686

Abstract

A 2,6-di-tert-butylpyridine-containing norbornene was synthesized by a one-step synthesis and copolymerized with an aromatic norbornene to obtain a membrane with a proton conductivity of 56 mS cm-1 in 2 M H2SO4. Decreased vanadium(IV) permeability was reached compared to the fluorine-containing reference membrane FAPQ330. A vanadium(V) stability test for 55 days [1.6 M V(V)/2 M H2SO4] showed no degradation of functional groups but a loss of molecular weight. Vanadium redox flow battery single-cell tests resulted in a performance comparable to that of FAPQ330, and an in situ self-discharge test lasted more than 3 times longer for the cell equipped with pNorb-Pyr61.

Involved external institutions

Forschungszentrum Jülich / Research Centre Jülich (FZJ) DE Germany (DE) Albert-Ludwigs-Universität Freiburg DE Germany (DE)

How to cite

APA:

Stonawski, J., Junginger, F., Münchinger, A., Hager, L., Thiele, S., & Kerres, J. (2024). Fluorine-Free Polynorbornene Membranes Based on a Sterically Hindered Pyridine for Vanadium Redox Flow Batteries. ACS Applied Polymer Materials. https://doi.org/10.1021/acsapm.4c01686

MLA:

Stonawski, Julian, et al. "Fluorine-Free Polynorbornene Membranes Based on a Sterically Hindered Pyridine for Vanadium Redox Flow Batteries." ACS Applied Polymer Materials (2024).

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