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April 19, 2026ACS Applied Materials & InterfacesOpen Access

Oxygen Vacancy Evolution at Li x V 2 O 5 /LiPON Solid State Electrochemical Interfaces Using Depth Resolved Cathodoluminescence Spectroscopy

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Authors

DHDaniel HalbingGPGregory PustorinoLTLeopoldo Tapia-Aracayo

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Overview

Depth-resolved cathodoluminescence spectroscopy observes oxygen vacancies in LiPON/LiX V2O5 interfaces, suggesting battery degradation impacts.

Key Points

  • This research aims to investigate the formation and evolution of oxygen vacancies at LiPON/LiX V2O5 interfaces during electrochemical cycling.
  • Utilized depth-resolved cathodoluminescence spectroscopy (DRCLS) to observe oxygen vacancies
  • Assessed the spatial distribution and intensity of emission signals as a function of cycling
  • Employed density functional theory to understand defect emissions
  • Oxygen vacancies were detected near the interface before electrochemical cycling began
  • Signal intensity of oxygen vacancies increased with cycling, penetrating deeper into the electrode
  • Electrochemical performance showed poor Coulombic efficiency and a capacity drop of 15% over 50 cycles

Cite This Study

Halbing et al. (2026) studied this question.

synapsesocial.com/papers/69e47440010ef96374d90089https://doi.org/10.1021/acsami.5c25104
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