Surface films formed on lithium surfaces in γ‐butyrolactone (BL) solutions were studied using FTIR and NMR. Two types of lithium surfaces were studied: solid lithium and lithium amalgam. In both cases, the main components of those surface films were lithium butyrate and a lithium salt of a cyclic β‐keto ester anion. Their mechanism of formation is discussed.
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Doron Aurbach (1989) studied this question.
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