Cryo‐Electron Tomography of Highly Deformable and Adherent Solid‐Electrolyte Interphase Exoskeleton in Li‐Metal Batteries with Ether‐Based Electrolyte (Adv. Mater. 13/2022)

Abstract

Solid Electrolyte Interphase The solid electrolyte interphase (SEI) plays a critical role in determining the cycling stability of lithium-metal anodes. However, viewing the SEI in batteries remains extremely challenging due to its supersensitivity to the electron beam under a microscope. In article number 2108252, Ju Li, Meng Gu, and co-workers develop an ultralow-dosage cryo-TEM protocol to directly visualize the SEI in 3D at different charging states, revealing surprising and fundamentally significant results for the SEI. The optimized chemo-mechanical properties of the SEI contribute significantly to the superior performances of Li-metal batteries.