Fig. 2: Characterization of the pristine, BBr3-treated, and naked Li metal foils.
From: Naked metallic skin for homo-epitaxial deposition in lithium metal batteries
a Schematic illustration of the elimination of the native film with photographic images of the Li metal foils after individual reaction steps: in its pristine state (left), after treatment with BBr3 (middle), after washing with the electrolyte of choice (right). b SEM images of Li metal foils after the corresponding reaction steps (the insets are the magnifications). c Li 1 s XPS plot of the pristine Li metal foil. d Br 3d XPS plot of the BBr3-treated Li metal foil. e Li 1 s XPS plot of the naked Li metal foil.
