000K utf8 1100 2023$c2023-11-01 1500 eng 2050 urn:nbn:de:gbv:27-dbt-20240418-140756-003 2051 10.1002/smll.202303625 3000 Rajendran, Sathish 3010 Arava, Leela Mohana Reddy 3010 George, Antony 3010 Neumann, Christof 3010 Tang, Zian 3010 Turchanin, Andrey 4000 Regulating Li‐Ion Transport through Ultrathin Molecular Membrane to Enable High‐Performance All‐Solid‐State–Battery [Rajendran, Sathish] 4060 10 Seiten 4209 Solid‐state lithium metal batteries with garnet‐type electrolyte provide several advantages over conventional lithium‐ion batteries, especially for safety and energy density. However, a few grand challenges such as the propagation of Li dendrites, poor interfacial contact between the solid electrolyte and the electrodes, and formation of lithium carbonate during ambient exposure over the solid‐state electrolyte prevent the viability of such batteries. Herein, an ultrathin sub‐nanometer porous carbon nanomembrane (CNM) is employed on the surface of solid‐state electrolyte (SSE) that increases the adhesion of SSE with electrodes, prevents lithium carbonate formation over the surface, regulates the flow of Li‐ions, and blocks any electronic leakage. The sub‐nanometer scale pores in CNM allow rapid permeation of Li‐ions across the electrode–electrolyte interface without the presence of any liquid medium. Additionally, CNM suppresses the propagation of Li dendrites by over sevenfold up to a current density of 0.7 mA cm −2 and enables the cycling of all‐solid‐state batteries at low stack pressure of 2 MPa using LiFePO 4 cathode and Li metal anode. The CNM provides chemical stability to the solid electrolyte for over 4 weeks of ambient exposure with less than a 4% increase in surface impurities. 4950 https://doi.org/10.1002/smll.202303625$xR$3Volltext$534 4950 https://nbn-resolving.org/urn:nbn:de:gbv:27-dbt-20240418-140756-003$xR$3Volltext$534 4961 https://www.db-thueringen.de/receive/dbt_mods_00060284 5051 620 5550 all‐solid‐state batteries 5550 carbon nanomembrane 5550 dendrite suppression 5550 lithium metal batteries 5550 solid‐state electrolytes 5550 sub‐nanometer porous membranes