Lithium Electrodeposition in the Presence of SurfactantsстатьяИсследовательская статья
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Дата последнего поиска статьи во внешних источниках: 12 июня 2024 г.
Аннотация:Abstract—The aim of this work is to study the possibility of suppressing the metallic lithium dendrite formationduring the operation of lithium secondary batteries, including those with a metallic lithium anode. Theelectrochemical deposition of lithium on copper and lithium substrates in the presence or absence of two surfactants,cetyltrimethylammonium bromide and hexadecylpyridinium bromide, is studied by the currenttransient and electrochemical impedance measurements. A typical lithium-ion battery electrolyte based onlithium hexafluorophosphate in the mixture of ethylene carbonate and diethyl carbonate is used. The presenceof the so-called SEI (solid electrolyte interphase) layer on the electrode surface is shown to have a significanteffect on the electrodeposition process. It is also shown that the mechanism of lithium electrodepositionon copper and lithium substrates is different. It can be assumed that the observed effect of surfactantson the dendrite formation is associated not with the adsorption of surfactants on lithium and blocking thegrowth of deposits, but with the surfactant effect on the properties of the SEI layer formed at these substrates.