In:
Proceedings of the National Academy of Sciences, Proceedings of the National Academy of Sciences, Vol. 119, No. 20 ( 2022-05-17)
Kurzfassung:
In pursuit of high-energy-density materials, layered LiCoO 2 has always drawn significant attention for Li-ion batteries (LIBs). Upon delithiation, LiCoO 2 usually suffers from deleterious CoO 6 slab glide, during which the emerging significant, but subtle, structural changes actually provide the necessary fundamentals to stabilize its high-energy-density feature, although it remains ambiguous. In this context, an unprecedented kinetic process of the CoO 6 slab is observed upon the delithiation of LiCoO 2 . Such a behavior corresponds to a collective and quasi-continuous migration process of the CoO 6 slabs over a wide range of charge/discharge before the layered-to-rock-salt-phase transformation. By introducing a gradual angle, the movement of CoO 6 slabs can be precisely described with Li contents, which unlocks the door to elucidating the nanoscale electrode process dynamics as well as the atomic-scale design of layered electrodes for batteries.
Materialart:
Online-Ressource
ISSN:
0027-8424
,
1091-6490
DOI:
10.1073/pnas.2120060119
Sprache:
Englisch
Verlag:
Proceedings of the National Academy of Sciences
Publikationsdatum:
2022
ZDB Id:
209104-5
ZDB Id:
1461794-8
SSG:
11
SSG:
12
