Mg 2+ initiated in situ polymerization of dioxolane enabling stable interfaces in solid-state lithium metal batteries

A poly(1,3-dioxolane) solid-state electrolyte was via in situ polymerized using Mg 2+ -containing montmorillonite. The competitive coordination of Mg 2+ and TFSI − led to the stable MgF 2 interphases, suppressing the interfacial side reactions.