Anode-less lithium metal battery under realistic condition enabled by surface electronic structure modification with carbon defect chemistry

Abstract

The reversible Li metal electroplating is scientific and technological issue for realizing high energy density metallic state lithium battery (LMB). However, the morphological propensity of dendritic Li growth was rarely controlled disrupting the stable operation of LMB with aggressive electrolyte decomposition. Here, we suggest the novel atomistic structure of defect intercalated Li for alleviating electron tunneling generating thin SEI layer and morphological modulation of Li electroplating. The ZIF-8 induced defective layer successfully realized reversible Li electroplating with lateral growth of pre-deposited Li particles, and suppressed the liquid electrolyte decomposition on the current collector surface achieving high performance anode-less lithium metal battery (AL-LMB) under realistic condition

50 cycle over 90 % capacity retention with 4.2 mAh cm-2 high loading NCM811 cathode at high C-rate of 0.48 C. The in-depth study reveals that the mechanistic origin of electron