Artificial solid electrolyte interphase based on polyacrylonitrile for homogenous and dendrite-free deposition of lithium metal

Xu Hang-Yu^{1, 2}, Li Quan^{1, 2}, Pan Hong-Yi^{1, 2}, Qiu Ji-Liang^{1, 2}, Cao Wen-Zhuo^{1, 2}, Yu Xi-Qian^{1, 2, ‡}, Li Hong^{1, 2, †}

Schematic illustration of the lithium behavior on the Cu electrodes with (a) no coating, (b) pristine PAN coating, and (c) heat-treated PAN coating. The brown parts stand for Cu, blue parts stand for PAN-based coatings, and the grey parts stand for electrodeposited lithium.