Rational Design of Low Cost and High Energy Lithium Batteries through Tailored Fluorine-free Electrolyte and Nanostructured S/C Composite.
ChemSusChem
; 11(17): 2981-2986, 2018 Sep 11.
Article
en En
| MEDLINE
| ID: mdl-29879310
ABSTRACT
We report a new Li-S cell concept based on an optimized F-free catholyte solution and a high loading nanostructured C/S composite cathode. The Li2 S8 present in the electrolyte ensures both buffering against active material dissolution and Li+ conduction. The high S loading is obtained by confining elemental S (≈80 %) in the pores of a highly ordered mesopores carbon (CMK3). With this concept we demonstrate stabilization of a high energy density and excellent cycling performance over 500â
cycles. This Li-S cell has a specific capacity that reaches over 1000â
mA h g-1 , with an overall S loading of 3.6â
mg cm-2 and low electrolyte volume (i.e., 10â
µL cm-2 ), resulting in a practical energy density of 365â
Wh kg-1 . The Li-S system proposed thus meets the requirements for large scale energy storage systems and is expected to be environmentally friendly and have lower cost compared with the commercial Li-ion battery thanks to the removal of both Co and F from the overall formulation.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Tipo de estudio:
Health_economic_evaluation
Idioma:
En
Revista:
ChemSusChem
Asunto de la revista:
QUIMICA
/
TOXICOLOGIA
Año:
2018
Tipo del documento:
Article
País de afiliación:
Suecia
Pais de publicación:
ALEMANHA
/
ALEMANIA
/
DE
/
DEUSTCHLAND
/
GERMANY