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Kartashova NV, Konev DV, Loktionov PA, Glazkov AT, Goncharova OA, Petrov MM, Antipov AE, Vorotyntsev MA. A Hydrogen-Bromate Flow Battery as a Rechargeable Chemical Power Source. MEMBRANES 2022; 12:1228. [PMID: 36557135 PMCID: PMC9782483 DOI: 10.3390/membranes12121228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 11/25/2022] [Accepted: 12/01/2022] [Indexed: 06/17/2023]
Abstract
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: BrO3− + 6 H+ + 6 e− = Br− + 3 H2O (*). The process of electric current generation occurs on the basis of the overall reaction: 3 H2 + BrO3− = Br− + 3 H2O (**), which has been studied in previous publications. Until this work, it has been unknown whether this device is able to function as a rechargeable power source. This means that the bromide anion, Br−, should be electrooxidized into the bromate anion, BrO3−, in the course of the charging stage inside the same cell under strongly acidic conditions, 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 cyclic manner, i.e., as a series of charge and discharge stages with the use of MEA: H2, Freidenberg H23C8 Pt-C/GP-IEM 103/Sigracet 39AA, HBr + H2SO4; square cross-section of 4 cm2 surface area, under an alternating galvanostatic mode at a current density of 75 mA/cm2. 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.
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Affiliation(s)
- Natalia V. Kartashova
- Faculty of Fundamental Physical and Chemical Engineering, Lomonosov Moscow State University, 119991 Moscow, Russia
- EMCPS Department, Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia
| | - Dmitry V. Konev
- Federal Research Center of Problem of Chemical Physics and Medicinal Chemistry RAS, 142432 Chernogolovka, Russia
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 119071 Moscow, Russia
| | - Pavel A. Loktionov
- EMCPS Department, Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia
- Federal Research Center of Problem of Chemical Physics and Medicinal Chemistry RAS, 142432 Chernogolovka, Russia
| | - Artem T. Glazkov
- EMCPS Department, Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 119071 Moscow, Russia
| | - Olga A. Goncharova
- Federal Research Center of Problem of Chemical Physics and Medicinal Chemistry RAS, 142432 Chernogolovka, Russia
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 119071 Moscow, Russia
| | - Mikhail M. Petrov
- EMCPS Department, Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia
| | - Anatoly E. Antipov
- EMCPS Department, Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia
| | - Mikhail A. Vorotyntsev
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 119071 Moscow, Russia
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Pichugov R, Konev D, Speshilov I, Abunaeva L, Petrov M, Vorotyntsev MA. Analysis of the Composition of Bromide Anion Oxidation Products in Aqueous Solutions with Different pH via Rotating Ring-Disk Electrode Method. MEMBRANES 2022; 12:820. [PMID: 36135839 PMCID: PMC9504282 DOI: 10.3390/membranes12090820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 08/15/2022] [Accepted: 08/17/2022] [Indexed: 06/16/2023]
Abstract
We measured the ring collection coefficient of bromide anion oxidation products in a neutral and slightly alkaline medium on a rotating ring-disk electrode (glassy carbon disk, platinum ring) varying the following parameters: disk electrode rotation velocity, sodium bromide concentration, pH of the medium (in the range of 6−12), anode current on the disk, and the electroreduction potential of the bromide anion oxidation products on the ring. The data obtained are presented via dependences of the cathode ring current on the disk current ratio vs. the ring electrode potential. The analysis of the results was carried out by comparing the experimental polarization curves of the ring electrode with the data of cyclic voltammetry in model solutions to determine the electrical activities of various bromine compounds in positive oxidation states. We claim that the RRDE method could be used to obtain quantitative and qualitative data on the electrooxidation of bromide ions in neutral and alkaline solutions. For the most effective regeneration of the spent oxidizer, the values of pH > 10 and moderate concentrations of NaBr should be used.
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Affiliation(s)
- Roman Pichugov
- EMCPS Department, Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia
| | - Dmitry Konev
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, 142432 Chernogolovka, Russia
| | - Ivan Speshilov
- EMCPS Department, Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia
| | - Lilia Abunaeva
- EMCPS Department, Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia
| | - Mikhail Petrov
- EMCPS Department, Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia
| | - Mikhail Alexeevich Vorotyntsev
- EMCPS Department, Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, 142432 Chernogolovka, Russia
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 119071 Moscow, Russia
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Vorotyntsev MA, Volgin VM, Davydov AD. Halate electroreduction from acidic solution at rotating disk electrode: Theoretical study of the steady-state convective-migration-diffusion transport for comparable concentrations of halate ions and protons. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.139961] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Vorotyntsev MA, Antipov AE. Bromate electroreduction in acidic solution inside rectangular channel under flow-through porous electrode conditions. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.134799] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Hydrogen-bromate flow battery: can one reach both high bromate utilization and specific power? J Solid State Electrochem 2019. [DOI: 10.1007/s10008-019-04371-w] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Vorotyntsev M, Аntipov A. Novel procedure towards approximate analytical description of bromate-anion reduction at rotating disk electrode under steady-state transport conditions. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.09.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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