Sandwich-Model Cathode Electrolyte Interphase Facilitating All-Climate High-Voltage Nickel-Rich Cathode-Based Lithium Metal Batteries with LiBF4-Based Electrolyte
© 2025 Wiley‐VCH GmbH.
| Publié dans: | Advanced materials (Deerfield Beach, Fla.). - 1998. - 37(2025), 38 vom: 01. Sept., Seite e2508595 |
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| Auteur principal: | |
| Autres auteurs: | , , , , , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2025
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| Accès à la collection: | Advanced materials (Deerfield Beach, Fla.) |
| Sujets: | Journal Article cathode electrolyte interphase high‐voltage electrolyte lithium metal batteries nickel‐rich cathode wide temperature |
| Résumé: | © 2025 Wiley‐VCH GmbH. All-climate lithium metal batteries are highly needed, but remains a huge challenge in cycling life due to the existence of unstable electrode electrolyte interphases, especially with nickel-rich layered oxide cathode at high cut-off voltage. To address this question, a functional and robust sandwich-model cathode electrolyte interphase (CEI) is proposed, derived from a LiBF4-based electrolyte modified with para-fluorobenzeneacetonitrile (P-FBCN) additive, to realize the stability of 4.8 V Li||LiNi0.94Co0.05Mn0.01O2 (NCM94) battery operated from -60 to 60 °C. The LiF-rich sandwich-model CEI features an outer layer of LiBxOy-rich to enhance mechanical/thermal stability, and the inner -C≡N-rich anchoring layer to facilitate Li⁺ conduction and inhibit the dissolution of transition metal ions. Notably, the 7.6 Ah-grade Li||NCM94 pouch cell with such electrolyte can yield a high energy density of 544 Wh kg-1 with a long lifespan of 158 cycles |
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| Description: | Date Revised 26.09.2025 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
| ISSN: | 1521-4095 |
| DOI: | 10.1002/adma.202508595 |