Fig. 2
From: Conductivity and lithiophilicity gradients guide lithium deposition to mitigate short circuits
SEM and optical microscopy characterization of BNS and DRS. SEM images of the top surface of a BNS and b DRS, and of c the cross section of the DRS. d EDS plot and elemental mapping of Al, Au, and Ni in the cross section of the DRS. e−l Schematic illustration and cross-sectional SEM images of the Li-plating process: Bottom–up plating in the DRS with capacities of e 3, f−h 5, and i 8 mAh cm−2, respectively (the yellow dash lines indicates the edges of Li-deposited regions). j−l Surface plating in a BNS with a capacity of approximately 3 mAh cm−2. m Optical microscopy images of the cross section of the DRS, which show the Li-plating process over time (the red arrow indicates the direction of Li growth). Photographs of n BNS and o DRS, respectively, before and after Li plating. p SEM and EDS elemental mapping images of a Li-plated DRS, which was treated with CuCl2 solution in dimethoxyethane. Scale bars: (a, c, e, f, i, j, p), 25 μm; (b, g, h, k, l), 5 μm
