Oxygen Transport through Amorphous Cathode Coatings in Solid-State Batteries.

ABSTRACT: All solid-state batteries (SSBs) are considered the most promising path to enabling higher energy-density portable energy, while concurrently improving safety as compared to current liquid electrolyte solutions. However, the desire for high energy necessitates the choice of high-voltage cathodes, such as nickel-rich layered oxides, where degradation phenomena related to oxygen loss and structural densification at the cathode surface are known to significantly compromise the cycle and thermal stability. In this work, we show, for the first time, that even in an SSB, and when protected by an intact amorphous coating, the LiNi_0.5Mn_0.3Co_0.2O₂ (NMC⁵³²) surface transforms from a layered structure into a rocksalt-like structure after electroc

SUBMITTER: Cheng J 

PROVIDER: S-EPMC10976630 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature