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Bromine Crossover in Operando Analysis of Proton Exchange Membranes in Hydrogen−Bromate Flow Batteries
| Content Provider | MDPI |
|---|---|
| Author | Modestov, Alexander Kartashova, Natalia Pichugov, Roman Petrov, Mikhail Antipov, Anatoly Abunaeva, Lilia |
| Copyright Year | 2022 |
| Description | The manuscript deals with the fundamental problem of platinum hydrogen oxidation catalyst poisoning of the hybrid chemical power source based on bromate electroreduction and hydrogen electro-oxidation reactions. The poisoning is caused by the crossover of bromine-containing species through the proton exchange membrane separating compartments of the flow cell. Poisoning results in a drastic decrease in the flow cell performance. This paper describes the results of the direct measurement of bromine-containing species’ crossover through perfluorosulfonic acid membranes of popular vendors in a hydrogen−bromate flow cell and proposes corresponding scenarios for the flow battery charge−discharge operation based on the electrolyte’s control of the pH value. The rate of the crossover of the bromine-containing species through the membrane is found to be inversely proportional to the membrane thickness. |
| Starting Page | 815 |
| e-ISSN | 20770375 |
| DOI | 10.3390/membranes12080815 |
| Journal | Membranes |
| Issue Number | 8 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-08-22 |
| Access Restriction | Open |
| Subject Keyword | Membranes Crossover Bromine Bromate Flow Battery Proton Exchange Membrane |
| Content Type | Text |
| Resource Type | Article |
