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The Effect of Decalin and Perfluorodecalin on Dendrite Formation at Metallic Lithium Anodes during Their Operationстатья Исследовательская статья
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 12 июня 2024 г.
- Авторы: Alpatov S.S., Vasiliev F.A., Semenikhin O.A.
- Журнал: Russian Journal of Electrochemistry
- Том: 60
- Номер: 5
- Год издания: 2024
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 376
- Последняя страница: 385
- DOI: 10.1134/s1023193524050045
- Аннотация: Abstract—In this work, we studied the effect of additions of decahydronaphthalene (decalin) and its derivative,perfluorodecalin (octadecafluorodecalin) on the lithium metal deposition and dissolution, in particular,the dendrite formation, at the anodes of lithium secondary power sources in an electrolyte based on lithiumhexafluorophosphate in the mixture of ethylene carbonate and diethyl carbonate. The study was carried outusing the methods of current transients and electrochemical impedance. The results showed that, in contrastto traditional cationic surfactants cetyltrimethylammonium bromide and hexadecylpyridinium bromide,which we have studied earlier, the decalin and perfluorodecalin demonstrated specific interaction with thesurface of the lithium electrode. Moreover, the interaction with decalin is so strong that it actually blocks theprocesses of both lithium deposition and anodic dissolution at the surface of the lithium electrode. The interactionof perfluorodecalin with the lithium surface turned out to be weaker. As a result, perfluorodecalin doesnot interfere with the cycling of the lithium-metal anode, but at the same time shows an inhibitory effect onthe dendrite formation. In the electrolyte added with perfluorodecalin, the lithium anode was able to undergomore than 80 charging–discharging cycles with a Coulomb efficiency of 70–80%, while without the additive,the number of cycles was less than 40, and the Coulomb efficiency was 60% or lower.
- Добавил в систему: Семенихин Олег Александрович