30 μm thin hexamethyl-p-terphenyl poly(benzimidazolium) anion exchange membrane for vanadium redox flow batteries
We present the first results of an anion exchange ionomer membrane, hexamethyl-p-terphenyl poly(benzimidazolium) (HMT-PMBI), in a vanadium redox flow battery. Anion exchange membranes exhibit superior vanadium crossover suppression compared to proton exchange membranes due to the Gibbs–Donnan effect...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2019-05-01
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| Series: | Electrochemistry Communications |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1388248119300803 |
| _version_ | 1818844987463303168 |
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| author | Brian Shanahan Thomas Böhm Benjamin Britton Steven Holdcroft Roland Zengerle Severin Vierrath Simon Thiele Matthias Breitwieser |
| author_facet | Brian Shanahan Thomas Böhm Benjamin Britton Steven Holdcroft Roland Zengerle Severin Vierrath Simon Thiele Matthias Breitwieser |
| author_sort | Brian Shanahan |
| collection | DOAJ |
| description | We present the first results of an anion exchange ionomer membrane, hexamethyl-p-terphenyl poly(benzimidazolium) (HMT-PMBI), in a vanadium redox flow battery. Anion exchange membranes exhibit superior vanadium crossover suppression compared to proton exchange membranes due to the Gibbs–Donnan effect. HMT-PMBI was benchmarked against a similarly thin Nafion XL membrane which allowed us to compare differences based solely on chemical properties of the ionomer materials. We report cycling data of 45 cycles at a current density of 150 mA/cm2 with excellent coulombic efficiency of >99.4%, energy efficiency of 80.6–74.2% and a low ohmic resistance of 0.219–0.255 Ω cm2. In addition, a three times lower self-discharge rate is obtained for the HMT-PMBI membrane compared to Nafion XL. HMT-PMBI is therefore a potential alternative for PFSA based ionomers in VRFB applications. Keywords: Anion exchange membrane, Vanadium redox flow battery, Energy storage, HMT-PMBI, Coulombic efficiency |
| first_indexed | 2024-12-19T05:22:30Z |
| format | Article |
| id | doaj.art-e53b16585fd841be90b6ee9b2cd1dba3 |
| institution | Directory Open Access Journal |
| issn | 1388-2481 |
| language | English |
| last_indexed | 2024-12-19T05:22:30Z |
| publishDate | 2019-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Electrochemistry Communications |
| spelling | doaj.art-e53b16585fd841be90b6ee9b2cd1dba32022-12-21T20:34:28ZengElsevierElectrochemistry Communications1388-24812019-05-01102374030 μm thin hexamethyl-p-terphenyl poly(benzimidazolium) anion exchange membrane for vanadium redox flow batteriesBrian Shanahan0Thomas Böhm1Benjamin Britton2Steven Holdcroft3Roland Zengerle4Severin Vierrath5Simon Thiele6Matthias Breitwieser7Laboratory for MEMS Applications, IMTEK Department of Microsystems Engineering, University of Freiburg, Georges-Koehler-Allee 103, 79110 Freiburg, GermanyLaboratory for MEMS Applications, IMTEK Department of Microsystems Engineering, University of Freiburg, Georges-Koehler-Allee 103, 79110 Freiburg, GermanyDepartment of Chemistry, Simon Fraser University, Burnaby, CanadaDepartment of Chemistry, Simon Fraser University, Burnaby, CanadaLaboratory for MEMS Applications, IMTEK Department of Microsystems Engineering, University of Freiburg, Georges-Koehler-Allee 103, 79110 Freiburg, Germany; Hahn-Schickard, Georges-Koehler-Allee 103, 79110 Freiburg, GermanyLaboratory for MEMS Applications, IMTEK Department of Microsystems Engineering, University of Freiburg, Georges-Koehler-Allee 103, 79110 Freiburg, Germany; Hahn-Schickard, Georges-Koehler-Allee 103, 79110 Freiburg, Germany; Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), Georges-Kohler-Allee 105, 79110 Freiburg, GermanyForschungszentrum Jülich GmbH, Helmholtz-Institute, Erlangen-Nürnberg for Renewable Energy, (IEK-11), Erlangen, Germany; Department of Chemical and Biological Engineering, Friedrich-Alexander-Universität, Erlangen-Nürnberg, Erlangen, GermanyLaboratory for MEMS Applications, IMTEK Department of Microsystems Engineering, University of Freiburg, Georges-Koehler-Allee 103, 79110 Freiburg, Germany; Hahn-Schickard, Georges-Koehler-Allee 103, 79110 Freiburg, Germany; Corresponding author at: Laboratory for MEMS Applications, IMTEK Department of Microsystems Engineering, University of Freiburg, Georges-Koehler-Allee 103, 79110 Freiburg, Germany.We present the first results of an anion exchange ionomer membrane, hexamethyl-p-terphenyl poly(benzimidazolium) (HMT-PMBI), in a vanadium redox flow battery. Anion exchange membranes exhibit superior vanadium crossover suppression compared to proton exchange membranes due to the Gibbs–Donnan effect. HMT-PMBI was benchmarked against a similarly thin Nafion XL membrane which allowed us to compare differences based solely on chemical properties of the ionomer materials. We report cycling data of 45 cycles at a current density of 150 mA/cm2 with excellent coulombic efficiency of >99.4%, energy efficiency of 80.6–74.2% and a low ohmic resistance of 0.219–0.255 Ω cm2. In addition, a three times lower self-discharge rate is obtained for the HMT-PMBI membrane compared to Nafion XL. HMT-PMBI is therefore a potential alternative for PFSA based ionomers in VRFB applications. Keywords: Anion exchange membrane, Vanadium redox flow battery, Energy storage, HMT-PMBI, Coulombic efficiencyhttp://www.sciencedirect.com/science/article/pii/S1388248119300803 |
| spellingShingle | Brian Shanahan Thomas Böhm Benjamin Britton Steven Holdcroft Roland Zengerle Severin Vierrath Simon Thiele Matthias Breitwieser 30 μm thin hexamethyl-p-terphenyl poly(benzimidazolium) anion exchange membrane for vanadium redox flow batteries Electrochemistry Communications |
| title | 30 μm thin hexamethyl-p-terphenyl poly(benzimidazolium) anion exchange membrane for vanadium redox flow batteries |
| title_full | 30 μm thin hexamethyl-p-terphenyl poly(benzimidazolium) anion exchange membrane for vanadium redox flow batteries |
| title_fullStr | 30 μm thin hexamethyl-p-terphenyl poly(benzimidazolium) anion exchange membrane for vanadium redox flow batteries |
| title_full_unstemmed | 30 μm thin hexamethyl-p-terphenyl poly(benzimidazolium) anion exchange membrane for vanadium redox flow batteries |
| title_short | 30 μm thin hexamethyl-p-terphenyl poly(benzimidazolium) anion exchange membrane for vanadium redox flow batteries |
| title_sort | 30 μm thin hexamethyl p terphenyl poly benzimidazolium anion exchange membrane for vanadium redox flow batteries |
| url | http://www.sciencedirect.com/science/article/pii/S1388248119300803 |
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