Improved Cycle Life and Stability of Lithium Metal Anodes through Ultrathin Atomic Layer Deposition Surface Treatments Eric Kazyak Kevin N. Wood Neil P. Dasgupta 10.1021/acs.chemmater.5b02789.s001 https://acs.figshare.com/articles/journal_contribution/Improved_Cycle_Life_and_Stability_of_Lithium_Metal_Anodes_through_Ultrathin_Atomic_Layer_Deposition_Surface_Treatments/2129122 Improving the cycle life and failure resistance of lithium metal anodes is critical for next-generation rechargeable batteries. Here, we show that treating Li metal foil electrodes with ultrathin (∼2 nm) Al<sub>2</sub>O<sub>3</sub> layers using atomic layer deposition (ALD) without air exposure can prevent dendrite formation upon cycling at a current density of 1 mA/cm<sup>2</sup>. This has the effect of doubling the lifetime of the anode before failure both under galvanostatic deep discharge conditions and cyclic plating/stripping of symmetric Li–Li cells. The ALD treated electrodes can be cycled for 1259 cycles before failure occurs, which is attributed to improved electrode morphology resulting from homogeneous Li ion flux across the electrode/electrolyte interface. 2015-09-22 00:00:00 Cycle Life discharge conditions Li metal foil electrodes Li ion flux layer deposition cycle life 1259 cycles Lithium Metal Anodes failure resistance air exposure dendrite formation Ultrathin Atomic Layer Deposition Surface TreatmentsImproving Al 2O layers electrode morphology lithium metal anodes ALD