A Hydrogen-Bromate Flow Battery as a Rechargeable Chemical Power Source
The hydrogen-bromate flow battery represents one of the promising variants for hybrid power sources. Its membrane-electrode assembly (MEA) combines a hydrogen gas diffusion anode and a porous flow-through cathode where bromate reduction takes place from its acidized aqueous solution: BrO<sub>3...
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| Format: | Article |
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MDPI AG
2022-12-01
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| Series: | Membranes |
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| Online Access: | https://www.mdpi.com/2077-0375/12/12/1228 |
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| author | Natalia V. Kartashova Dmitry V. Konev Pavel A. Loktionov Artem T. Glazkov Olga A. Goncharova Mikhail M. Petrov Anatoly E. Antipov Mikhail A. Vorotyntsev |
| author_facet | Natalia V. Kartashova Dmitry V. Konev Pavel A. Loktionov Artem T. Glazkov Olga A. Goncharova Mikhail M. Petrov Anatoly E. Antipov Mikhail A. Vorotyntsev |
| author_sort | Natalia V. Kartashova |
| collection | DOAJ |
| description | The hydrogen-bromate flow battery represents one of the promising variants for hybrid power sources. Its membrane-electrode assembly (MEA) combines a hydrogen gas diffusion anode and a porous flow-through cathode where bromate reduction takes place from its acidized aqueous solution: BrO<sub>3</sub><sup>−</sup> + 6 H<sup>+</sup> + 6 e<sup>−</sup> = Br<sup>−</sup> + 3 H<sub>2</sub>O (*). The process of electric current generation occurs on the basis of the overall reaction: 3 H<sub>2</sub> + BrO<sub>3</sub><sup>−</sup> = Br<sup>−</sup> + 3 H<sub>2</sub>O (**), which has been studied in previous publications. Until this work, it has been unknown whether this device is able to function as a <i>rechargeable</i> power source. This means that the bromide anion, Br<sup>−</sup>, should be electrooxidized into the bromate anion, BrO<sub>3</sub><sup>−</sup>, in the course of the charging stage <i>inside the same cell under strongly acidic conditions,</i> while until now this process has only been carried out in neutral or alkaline solutions with specially designed anode materials. In this study, we have demonstrated that processes (*) and (**) can be performed in a <i>cyclic</i> manner, i.e., as a series of charge and discharge stages with the use of MEA: H<sub>2</sub>, Freidenberg H23C8 Pt-C/GP-IEM 103/Sigracet 39AA, HBr + H<sub>2</sub>SO<sub>4</sub>; square cross-section of 4 cm<sup>2</sup> surface area, under an alternating galvanostatic mode at a current density of 75 mA/cm<sup>2</sup>. The coulombic, voltaic and energy efficiencies of the flow battery under a cyclic regime, as well as the absorption spectra of the catholyte, were measured during its operation. The total amount of Br-containing compounds penetrating through the membrane into the anode space was also determined. |
| first_indexed | 2024-03-09T16:06:48Z |
| format | Article |
| id | doaj.art-2de94c508ac94c4bae16394fe97ad696 |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-09T16:06:48Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-2de94c508ac94c4bae16394fe97ad6962023-11-24T16:35:39ZengMDPI AGMembranes2077-03752022-12-011212122810.3390/membranes12121228A Hydrogen-Bromate Flow Battery as a Rechargeable Chemical Power SourceNatalia V. Kartashova0Dmitry V. Konev1Pavel A. Loktionov2Artem T. Glazkov3Olga A. Goncharova4Mikhail M. Petrov5Anatoly E. Antipov6Mikhail A. Vorotyntsev7Faculty of Fundamental Physical and Chemical Engineering, Lomonosov Moscow State University, 119991 Moscow, RussiaFederal Research Center of Problem of Chemical Physics and Medicinal Chemistry RAS, 142432 Chernogolovka, RussiaEMCPS Department, Mendeleev University of Chemical Technology of Russia, 125047 Moscow, RussiaEMCPS Department, Mendeleev University of Chemical Technology of Russia, 125047 Moscow, RussiaFederal Research Center of Problem of Chemical Physics and Medicinal Chemistry RAS, 142432 Chernogolovka, RussiaEMCPS Department, Mendeleev University of Chemical Technology of Russia, 125047 Moscow, RussiaEMCPS Department, Mendeleev University of Chemical Technology of Russia, 125047 Moscow, RussiaFrumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 119071 Moscow, RussiaThe hydrogen-bromate flow battery represents one of the promising variants for hybrid power sources. Its membrane-electrode assembly (MEA) combines a hydrogen gas diffusion anode and a porous flow-through cathode where bromate reduction takes place from its acidized aqueous solution: BrO<sub>3</sub><sup>−</sup> + 6 H<sup>+</sup> + 6 e<sup>−</sup> = Br<sup>−</sup> + 3 H<sub>2</sub>O (*). The process of electric current generation occurs on the basis of the overall reaction: 3 H<sub>2</sub> + BrO<sub>3</sub><sup>−</sup> = Br<sup>−</sup> + 3 H<sub>2</sub>O (**), which has been studied in previous publications. Until this work, it has been unknown whether this device is able to function as a <i>rechargeable</i> power source. This means that the bromide anion, Br<sup>−</sup>, should be electrooxidized into the bromate anion, BrO<sub>3</sub><sup>−</sup>, in the course of the charging stage <i>inside the same cell under strongly acidic conditions,</i> while until now this process has only been carried out in neutral or alkaline solutions with specially designed anode materials. In this study, we have demonstrated that processes (*) and (**) can be performed in a <i>cyclic</i> manner, i.e., as a series of charge and discharge stages with the use of MEA: H<sub>2</sub>, Freidenberg H23C8 Pt-C/GP-IEM 103/Sigracet 39AA, HBr + H<sub>2</sub>SO<sub>4</sub>; square cross-section of 4 cm<sup>2</sup> surface area, under an alternating galvanostatic mode at a current density of 75 mA/cm<sup>2</sup>. The coulombic, voltaic and energy efficiencies of the flow battery under a cyclic regime, as well as the absorption spectra of the catholyte, were measured during its operation. The total amount of Br-containing compounds penetrating through the membrane into the anode space was also determined.https://www.mdpi.com/2077-0375/12/12/1228crossoverflow batteryfuel cellbromate anions reductionbromide anions oxidationredox mediator cycle |
| spellingShingle | Natalia V. Kartashova Dmitry V. Konev Pavel A. Loktionov Artem T. Glazkov Olga A. Goncharova Mikhail M. Petrov Anatoly E. Antipov Mikhail A. Vorotyntsev A Hydrogen-Bromate Flow Battery as a Rechargeable Chemical Power Source Membranes crossover flow battery fuel cell bromate anions reduction bromide anions oxidation redox mediator cycle |
| title | A Hydrogen-Bromate Flow Battery as a Rechargeable Chemical Power Source |
| title_full | A Hydrogen-Bromate Flow Battery as a Rechargeable Chemical Power Source |
| title_fullStr | A Hydrogen-Bromate Flow Battery as a Rechargeable Chemical Power Source |
| title_full_unstemmed | A Hydrogen-Bromate Flow Battery as a Rechargeable Chemical Power Source |
| title_short | A Hydrogen-Bromate Flow Battery as a Rechargeable Chemical Power Source |
| title_sort | hydrogen bromate flow battery as a rechargeable chemical power source |
| topic | crossover flow battery fuel cell bromate anions reduction bromide anions oxidation redox mediator cycle |
| url | https://www.mdpi.com/2077-0375/12/12/1228 |
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