Cathode Ray - Europe PMC

Degradation Analysis by X-ray Absorption Spectroscopy for LiNbO 3 Coating of Sulfide-Based All-Solid-State Battery Cathode.

LiNbO 3 is one of the most common materials, and surface coating of cathode active material in all-solid-state batteries using sulfide-based solid electrolytes is well-known to be a basic process, and it is one of the most popular materials. According to the TEM/EDS investigation, the Nb element derived from LiNbO 3 coating remained at the interface, indicating that the Nb element had not migrated to the solid electrolyte and active material. The XAS spectral results were related to the decomposition reaction that separated Li and O from the LiNbO3 coating, which showed Li and O from the comparison to the spectra of the Li-Nb-O system's reference materials.

Source link: https://europepmc.org/article/MED/36622813

Probing Distinctive Redox Mechanism in Ni-Rich Cathode Via Real-Time Quick X-Ray Absorption Spectroscopy.

The measured unit's X-ray radiation damage on the measurement device has been a significant problem for a long time exposure to the X-ray beam during in vitro measurements, and it's particularly problematic when the applied X-ray energy is near the absorption edges of the interest element. Compared to the conventional step-mode X-ray absorption spectroscopy, the QXAS can achieve more consistent oxidation state change and more detailed local structure evolutions surrounding TMs in Ni-rich layered oxides. The time-resolved QXAS method also demonstrated the movement between TMs sites and Li sites.

Source link: https://europepmc.org/article/MED/36446636

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