Fig. 4: In situ Optical microscopy and SEI compositions of bare Li and CS/DF-PEG-DF@Li electrode.
From: Dynamic gel as artificial interphase layer for ultrahigh-rate and large-capacity lithium metal anode
In-situ optical images of Li deposition on (a) bare Cu and (b) CS/DF-PEG-DF@Cu in Li||Cu cells at different minutes (Scale bar, 100 μm); C 1s XPS spectra of (c) bare Li and (d) CS/DF-PEG-DF@Li anodes after 10 cycles at 10 mA cm−2 under a capacity of 10 mAh cm−2; F 1s XPS spectra of (e) bare Li and (f) CS/DF-PEG-DF@Li anodes after 10 cycles at 10 mA cm−2 under a capacity of 10 mAh cm−2. g Schematic diagram of Li plating/stripping behaviors for the bare Li and CS/DF-PEG-DF@Li anode.
