Diminishing Self-Discharge of High-Loading Li-S Batteries with Oxygen-Rich Biomass Carbon Interlayers.
Chem Asian J
; 19(12): e202400177, 2024 Jun 17.
Article
en En
| MEDLINE
| ID: mdl-38639820
ABSTRACT
Lithium-sulfur batteries (Li-S) have possessed gratifying development in the past decade due to their high theoretical energy density. However, the severe polysulfide shuttling provokes undesirable self-discharge effect, leading to low energy efficiency in Li-S batteries. Herein, an interlayer composed of oxygen-rich carbon nanosheets (OCN) derived from bagasse is elaborated to suppress the shuttle effect and reduce the resultant self-discharge effect. The OCN interlayer is able to physically block the shuttling behavior of polysulfides and its oxygen-rich functional groups can strongly interact with polysulfides via O-S bonds to chemically immobilize mobile polysulfides. The self-discharge test for seven days further shows that the self-discahrge rate is diminished by impressive 93 %. As a result, Li-S batteries with the OCN interlayer achieve an ultrahigh discharge specific capacity of 710â
mAh g-1 at a high mass loading of 7.18â
mg. The work provides a facile method for designing functional interlayers and opens a new avenue for realizing Li-S batteries with high energy efficiency.
Texto completo:
1
Base de datos:
MEDLINE
Idioma:
En
Revista:
Chem Asian J
/
Chem. - Asian j. (Internet)
/
Chemistry - an Asian journal (Internet)
Año:
2024
Tipo del documento:
Article