Fig. 5
From: Conductivity and lithiophilicity gradients guide lithium deposition to mitigate short circuits
Low-temperature characterizations and electrochemical properties. Optical images of the top and bottom surfaces of a DRS and b BNS before and after Li plating at 5 °C and −15 °C. c–f Cross-section SEM images of the top regions at high magnification of (c, d) DRS and (e, f) BNS surfaces at 5 °C and −15 °C. g Voltage profiles of Li plating/stripping on the DRS at 0.25 mA cm−2. Cycling properties of symmetric cells consisting of DRS, BNS, or Cu foil at 0.5 mA cm−2 with a limited capacity of 1 mAh cm−2 at h 5 °C and i −15 °C. Scale bars: top images of (c−f), 5 μm; bottom images of (c−f), 25 μm
