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Correction published on 30 June 2022, see Molecules 2022, 27(13), 4234.
Article

Composite Polybenzimidazole Membrane with High Capacity Retention for Vanadium Redox Flow Batteries

1
Electrochemistry Laboratory, Paul Scherrer Institut, CH-5232 Villigen, Switzerland
2
Blue World Technologies, Egeskovvej 6C, DK-3490 Kvistgård, Denmark
3
Danish Center for Energy Storage, Frederiksholms Kanal 30, DK-1220 Copenhagen K, Denmark
4
Laboratory for Physical Chemistry, ETH Zurich, CH-8093 Zurich, Switzerland
*
Author to whom correspondence should be addressed.
Academic Editors: Joanna Krakowiak, Petr Mazur and Peter Fischer
Molecules 2021, 26(6), 1679; https://doi.org/10.3390/molecules26061679
Received: 5 February 2021 / Revised: 2 March 2021 / Accepted: 9 March 2021 / Published: 17 March 2021 / Corrected: 30 June 2022
(This article belongs to the Special Issue Redox Flow Batteries: Developments and Applications)
Currently, energy storage technologies are becoming essential in the transition of replacing fossil fuels with more renewable electricity production means. Among storage technologies, redox flow batteries (RFBs) can represent a valid option due to their unique characteristic of decoupling energy storage from power output. To push RFBs further into the market, it is essential to include low-cost materials such as new generation membranes with low ohmic resistance, high transport selectivity, and long durability. This work proposes a composite membrane for vanadium RFBs and a method of preparation. The membrane was prepared starting from two polymers, meta-polybenzimidazole (6 μm) and porous polypropylene (30 μm), through a gluing approach by hot-pressing. In a vanadium RFB, the composite membrane exhibited a high energy efficiency (~84%) and discharge capacity (~90%) with a 99% capacity retention over 90 cycles at 120 mA·cm−2, exceeding commercial Nafion® NR212 (~82% efficiency, capacity drop from 90% to 40%) and Fumasep® FAP-450 (~76% efficiency, capacity drop from 80 to 65%). View Full-Text
Keywords: polybenzimidazole; polypropylene; skin layer; support layer; interlocking interface; composite asymmetric membrane; vanadium redox flow battery; discharge capacity; capacity retention polybenzimidazole; polypropylene; skin layer; support layer; interlocking interface; composite asymmetric membrane; vanadium redox flow battery; discharge capacity; capacity retention
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MDPI and ACS Style

Duburg, J.C.; Azizi, K.; Primdahl, S.; Hjuler, H.A.; Zanzola, E.; Schmidt, T.J.; Gubler, L. Composite Polybenzimidazole Membrane with High Capacity Retention for Vanadium Redox Flow Batteries. Molecules 2021, 26, 1679. https://doi.org/10.3390/molecules26061679

AMA Style

Duburg JC, Azizi K, Primdahl S, Hjuler HA, Zanzola E, Schmidt TJ, Gubler L. Composite Polybenzimidazole Membrane with High Capacity Retention for Vanadium Redox Flow Batteries. Molecules. 2021; 26(6):1679. https://doi.org/10.3390/molecules26061679

Chicago/Turabian Style

Duburg, Jacobus C., Kobra Azizi, Søren Primdahl, Hans Aage Hjuler, Elena Zanzola, Thomas J. Schmidt, and Lorenz Gubler. 2021. "Composite Polybenzimidazole Membrane with High Capacity Retention for Vanadium Redox Flow Batteries" Molecules 26, no. 6: 1679. https://doi.org/10.3390/molecules26061679

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