Enabling an Intrinsically Safe and High‐Energy‐Density 4.5 V‐Class Lithium‐Ion Battery with Synergistically Incorporated Fast Ion Conductors (Adv. Energy Mater. 18/2023)

Li-Ion Batteries In article number 2203999, Zhenpeng Yao, Chun Zhan, Jun Lu, and co-workers work toward the fabrication of intrinsically safe high-energy-density 4.5 V-class Li-ion batteries. A sophisticated multifunctional surficial modification implemented by a neat one-step treatment is reported. An oxygen ion conductor introduced to surface cathode restrains activated lattice ions its stable vacancies, thereby dramatically enhancing battery safety.