T#2-Li0.69CoO2 : A Durable, High-Capacity, High-Rate Cathode Material for Lithium-Ion Batteries

Bibliographische Detailangaben
Veröffentlicht in:	Advanced materials (Deerfield Beach, Fla.). - 1998. - (2024) vom: 27. Nov., Seite e2412920
1. Verfasser:	Zuo, Yuxuan (VerfasserIn)
Weitere Verfasser:	Liu, Jiahui, Wang, Hangchao, Zou, Ying, Luo, Tie, Zhang, Kun, Yang, Yali, Gao, Chuan, Li, Biao, Sun, Qiang, Xia, Dingguo
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2024
Zugriff auf das übergeordnete Werk:	Advanced materials (Deerfield Beach, Fla.)
Schlagworte:	Journal Article T#2‐Li0.69CoO2 high energy cathode tetrahedra coordination

Beschreibung
Zusammenfassung:	© 2024 Wiley‐VCH GmbH. Efficient utilization of resources is crucial for the sustainable development of the lithium-ion battery industry. Although the traditional R 3 ¯ $\bar{3}$ m space group LiCoO2 can provide a current advanced discharge capacity of 215-220 mAh g⁻¹ at an upper cut-off voltage of 4.6 V (relative to Li⁺/Li), it still falls far short of its theoretical specific capacity of 273 mAh g⁻¹, and exhibits structural instability and labile oxygen loss, leading to rapid capacity degradation. T#2-Li0.69CoO2 is synthesized with Cmca space group and Li─O tetrahedral coordination. Owing to the unique Li─O tetrahedral coordination structure and the dominant cobalt oxidation under high voltage, T#2-Li0.69CoO2 delivers an ultra-high specific capacity of 258 mAh g-1, close to the theoretical capacity, in liquid electrolyte batteries and 253 mAh g-1 in solid state batteries, overcoming the structural instability of layered oxide cathodes during charging and discharging processes. This study broadens the possibilities of creating high energy-density cathodes for next-generation Li-ion batteries
Beschreibung:	Date Revised 28.11.2024 published: Print-Electronic Citation Status Publisher
ISSN:	1521-4095
DOI:	10.1002/adma.202412920