In Situ TEM Observation of (Cr, Mn, Fe, Co, and Ni)O High-Entropy Spinel Oxide Formation During Calcination at Atomic Scale.

High-entropy oxides (HEOs) are promising anode materials for lithium-ion batteries (LIBs), owing to their stable crystal structure, superionic conductivity, and high capacity. In this study, the (Cr, Mn, Fe, Co, and Ni)O HEO via solid-state reaction is prepared. To improve the synthetic efficiency, it is necessary to understand the formation mechanism.

All-Solid-State Garnet-Based Lithium Batteries at Work-In Operando TEM Investigations of Delithiation/Lithiation Process and Capacity Degradation Mechanism.

Li La Zr O (LLZO)-based all-solid-state Li batteries (SSLBs) are very attractive next-generation energy storage devices owing to their potential for achieving enhanced safety and improved energy density. However, the rigid nature of the ceramics challenges the SSLB fabrication and the afterward interfacial stability during electrochemical cycling. Here, a promising LLZO-based SSLB with a high areal capacity and stable cycle performance over 100 cycles is demonstrated.

Atomic Imaging and Thermally Induced Dynamic Structural Evolution of Two-Dimensional CrS.

In this study, facile salt-assisted chemical vapor deposition (CVD) was used to synthesize ultrathin non-van der Waals chromium sulfide (CrS) with a thickness of ∼1.9 nm. The structural transformation of as-grown CrS was studied using advanced heating techniques combined with transmission electron microscopy (TEM).