Raman spectroscopy complemented with XRD and TEM for studying structural evolution in initial cycles of LiNi_1/3Mn_1/3Co_1/3O₂ cathode material.

ABSTRACT: In this study, we present a detailed investigation of the structural evolution of NMC111 (LiNi_1/3Mn_1/3Co_1/3O₂) cathode material during cycling over an extended potential window, using a combination of in situ and ex situ Raman spectroscopy, ex situ X-ray diffraction (XRD), and high-resolution transmission electron microscopy (HR-TEM). The in situ Raman spectroscopy enabled real-time monitoring of structural changes under operating conditions, while ex situ Raman provided a more detailed post-mortem analysis. We revealed an energy-dependent Raman response that offered further insights into the electronic band structure and phase transitions within the material. We also observed a significant surface layer reconstruction at high potentials, where t

SUBMITTER: Buchberger DA 

PROVIDER: S-EPMC12540959 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature