In Situ 4D STEM of LiNiO₂ Particles Heated in an Oxygen Atmosphere: Toward Investigation of Solid-State Batteries Under Realistic Processing Conditions.

ABSTRACT: Cathode active material (CAM) particles and solid electrolyte (SE) - CAM composites for solid-state batteries (SSBs) are often subjected to elevated temperatures during annealing or co-sintering. This thermal treatment can affect the material's structure and induce degradation processes, particularly at the SE - CAM interface. To better understand these phenomena and improve material stability and performance, investigations by (scanning) transmission electron microscopy ((S)TEM) under realistic processing conditions, i.e., in an oxygen atmosphere, are desirable. However, preparing electron-transparent TEM lamellae of SE - CAM composites with intact interfaces is highly challenging. Therefore, an in situ heating methodology is first established using LiNiO₂ (LNO) particles as a

SUBMITTER: Demuth T 

PROVIDER: S-EPMC12825361 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature