Characterization of Chemical Degradation in Lithium-Ion Batteries Using Secondary Ion Mass Spectrometry (SIMS) and Hard X‑ray Photoelectron Spectroscopy (HAXPES).

ABSTRACT: LiNi _x Mn _y Co _z O₂ layered oxide cathodes are widely used in lithium-ion batteries, with LiNi_1/3Mn_1/3Co_1/3O₂ being the most commercially popular. Increasing the nickel ratio enhances the battery capacity and energy density but also quickens electrolyte degradation and capacity fade. This work presents a comparative analysis of the noncharged and single-charged states of NMC111, NMC532, and NMC811 cathodes using SIMS and HAXPES. The results reveal that electrolyte degradation initiates before applying a voltage bias and increases during the first charge, correlating with both increasing nickel content and charging process. Further comparison of NMC811 cathodes cycled in two differen

SUBMITTER: Alsaedi AH 

PROVIDER: S-EPMC12676502 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature