Dynamical theory for the battery's electromotive force
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| Autoři: | , , , |
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| Médium: | artículo original |
| Datum vydání: | 2021 |
| Popis: | We propose a dynamical theory of how the chemical energy stored in a battery generates the electromotive force (emf). In this picture, the battery's half-cell acts as an engine, cyclically extracting work from its underlying chemical disequilibrium. We show that the double layer at the electrode–electrolyte interface can exhibit a rapid self-oscillation that pumps an electric current, thus accounting for the persistent conversion of chemical energy into electrical work equal to the emf times the separated charge. We suggest a connection between this mechanism and the slow self-oscillations observed in various electrochemical cells, including batteries, as well as the enhancement of the current observed when ultrasound is applied to the half-cell. Finally, we propose more direct experimental tests of the predictions of this dynamical theory. |
| Země: | Kérwá |
| Instituce: | Universidad de Costa Rica |
| Repositorio: | Kérwá |
| Jazyk: | Inglés |
| OAI Identifier: | oai:kerwa.ucr.ac.cr:10669/84313 |
| On-line přístup: | https://pubs.rsc.org/en/content/articlelanding/2021/CP/D1CP00196E https://hdl.handle.net/10669/84313 |
| Klíčové slovo: | Batteries Electromotive force Electrical double layer Self-oscillation |