Rechargeable LiNi0.65 Co0.15 Mn0.2 O2 ||Graphite Batteries Operating at -60 °C.
Angew Chem Int Ed Engl
; 61(42): e202209619, 2022 Oct 17.
Article
em En
| MEDLINE
| ID: mdl-36036208
ABSTRACT
The rechargeability of contemporary lithium-ion batteries (LIBs) is challenging at low temperatures, mainly due to the hurdles faced by graphite anodes. Herein, by exploiting the Li-solvent co-intercalation into graphite, its low-temperature rechargeability is boosted. Experimental characterizations aided by theoretical calculations demonstrate that the co-intercalation process is featured by low interfacial resistance with a small charge transfer activation energy (0.23â
eV atom-1 ) and an extremely low diffusion energy barrier (0.09â
eV atom-1 ) which leads to nearly temperature-independent diffusion coefficients of the solvated Li-ion in graphite, enabling graphite to be stably charged-discharged at -60 °C with 73.7 % of its room-temperature capacity. Consequently, the full-cell consisting of a LiNi0.65 Co0.15 Mn0.2 O2 cathode and a graphite anode shows impressive rechargeability under -60 °C. This work provides an alternative approach to develop low-temperature rechargeable LIBs.
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Bases de dados:
MEDLINE
Idioma:
En
Revista:
Angew Chem Int Ed Engl
Ano de publicação:
2022
Tipo de documento:
Article
País de afiliação:
China