Operando X-ray Raman Ni 2p spectra of LiNixMnyCo1-x-yO2 lithium-ion battery electrodes
Lithium manganese nickel oxides are a prominent class of materials used for positively charged lithium-ion batteries. Three different archetype stoichiometries of lithium nickel manganese cobalt oxides (NMC) were studied with bulk-sensitive X-ray Raman and surface-sensitive soft X-ray absorption spectroscopy. We have conducted complementary operando battery X-ray experiments on the NMC622 electrode over one full charge and discharge cycle in a specifically designed operando battery cell. The <i>ex situ</i> NEXAFS spectra of the Ni L-edges show distinct differences in their multiplet characteristics depending on the cathode composition. The obtained operando X-ray Raman spectra show changes in the branching ratio of the Ni 2p spectra and confirms that the state of charge of the battery correlates with changes in the bulk of the electrode.
Authors
- Alexey Rulev (ORCID: https://orcid.org/0000-0002-9632-1161)
- Glennise Faye C. Mejica
- Adrian Jonas (ORCID: https://orcid.org/0000-0003-1511-5612)
- Selma Erat (ORCID: https://orcid.org/0000-0001-7187-7668)
- Dimosthenis Sokaras (ORCID: https://orcid.org/0000-0001-8117-1933)
- Katja Frenzel (ORCID: https://orcid.org/0000-0002-4446-5518)
- Artur Braun (ORCID: https://orcid.org/0000-0002-6992-7774)
- Nikolay V. Ryzhkov (ORCID: https://orcid.org/0000-0002-6557-0018)
- Jan Goran T. Tomacruz (ORCID: https://orcid.org/0000-0003-1162-2940)
- Hongxin Wang (ORCID: https://orcid.org/0000-0001-5531-3109)
- Burkhard Beckhoff
- Oscar Paredes
Institutions
- Physikalisch-Technische Bundesanstalt (DE)
- SLAC National Accelerator Laboratory (US)
- Mersin Üniversitesi (TR)
- Swiss Federal Laboratories for Materials Science and Technology (CH)
- University of the Philippines Diliman (PH)
- Search for Extraterrestrial Intelligence (US)
Publication Details
- Journal
- MRS Advances
- Published
- 2025-09-25
- DOI
- https://doi.org/10.1557/s43580-025-01397-3
- Primary Topic
- Advancements in Battery Materials
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Science Foundation
- Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
- Secretário de Ciência, Tecnologia e Ensino Superior, Governo do Estado de Parana
- National Institutes of Health
- SLAC National Accelerator Laboratory