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Hata, J.-I., Hirayama, M., Suzuki, K., Dupre, N., Guyomard, D. & Kanno, R. (2019) Effect of Surface Chemical Bonding States on Lithium Intercalation Properties of Surface-Modified Lithium Cobalt Oxide. Batteries & Supercaps, 2 454–463.
Added by: Richard Baschera (2019-08-22 13:58:11) Last edited by: Richard Baschera (2019-08-22 14:13:01) |
| Type de référence: Article DOI: 10.1002/batt.201800122 Clé BibTeX: Hata2019 Voir tous les détails bibliographiques  |
Catégories: INTERNATIONAL, ST2E Créateurs: Dupre, Guyomard, Hata, Hirayama, Kanno, Suzuki Collection: Batteries & Supercaps |
Consultations : 1/313
Indice de consultation : 4% Indice de popularité : 1% |
| Résumé |
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Understanding interfacial reactions between surface-modified lithium intercalation cathodes and organic electrolytes facilitates the design of highly functional cathodes for lithium-ion batteries. Here, the chemical bonding state between a LiCoO2 cathode and a ZrO2-x surface layer is controlled by pulsed arc plasma deposition using different ion energies. The lithium intercalation properties and interfacial structure changes are subsequently analyzed. The Zr-O-Co-modified surface formed by interaction between ZrO2-x and LiCoO2 provides superior cycle stability under high-voltage operation (2.8-4.5 V). X-ray photoemission spectroscopy clarifies that the Zr-O-Co surface forms highly adhesive ZrOxFy as a cathode electrolyte interphase (CEI). The chemical bonding state at the ZrO2-x/ LiCoO2 interface affects the reactivity of ZrO2-x with electrolyte species as well as the architecture of the CEI, which may determine the cell performances of lithium intercalation cathodes.
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