Fig. 6
From: Conductivity and lithiophilicity gradients guide lithium deposition to mitigate short circuits
Dendrite detection using symmetric cells including two separators. Optical images of the contact surfaces of two overlapping separators after cycling: a at 2 mAcm−2 and room temperature (Cu foil for 150 cycles, BNS for 250 cycles, and DRS for 300 cycles), b at 10 mA cm−2 and room temperature (Cu foil for 50 cycles, BNS for 100 cycles, and DRS for 130 cycles), c at 5 °C and 0.5 mA cm−2 for 100 cycles and d at −15 °C and 0.5 mA cm−2 for 50 cycles. e Schematic diagrams of different Li-plating modes in cells using Cu foil, BNS, and DRS
