期刊
MODERN PHYSICS LETTERS B
卷 34, 期 7-9, 页码 -出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217984920400242
关键词
Lithium ion secondary battery; XAS; XPS; O anion redox reaction
资金
- Toyota Motor Corporation
- Suzuki Foundation
- JSPS Kakenhi [18H03929]
- Grants-in-Aid for Scientific Research [18H03929] Funding Source: KAKEN
An investigation was made on the electronic structure of 4d transition metal layered oxide material of Li2RuO3 using X-ray photoelectron spectroscopy (XPS) and X-ray absorption spectroscopy (XAS). The intensity of O K pre-edge peak increased for Li ion extracted samples, suggesting increased ligand holes. The Ru 3d XPS spectrum suggested the variation of local structure around Ru ions by extraction of Li ions. We conclude that the delithiation from Li2RuO3 is charge compensated by O anions, and that the creation of the ligand holes reorganizes electronic structures composed of highly hybridized Ru 4d and O 2p orbitals.
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