In-situ Construction of Poly(tetraisopentyl acrylate) based Gel Polymer Electrolytes with Lix La2-x TiO3 for High Energy Density Lithium-Metal Batteries.
Chemistry
; 30(15): e202303820, 2024 Mar 12.
Article
em En
| MEDLINE
| ID: mdl-38183354
ABSTRACT
As promising alternatives to liquid electrolytes, polymer electrolytes attract much research interest recently, but their widespread use is limited by the low ionic conductivity. In this study, we use electrostatic spinning to introduce particles of an ionic conductor into polyacrylonitrile (PAN) fibers to prepare a porous membrane as the host of gel polymer electrolytes (GPEs). The relevant in-situ produced GPE performs a high ionic conductivity of 6.0×10-3 â
S cm-1 , and a high lithium transfer number (tLi + ) of 0.85 at 30 °C, respectively. A symmetrical Li cell with this GPE can cycle stably for 550â
h at a current density of 0.5â
mA cm-2 . While the capacity retention of the NCM|GPE|Li cell is 79.84 % after 500 cycles at 2â
C. Even with an increased cut-off voltage of 4.5â
V, the 1st coulomb efficiency reaches 91.58 % with a specific discharge capacity of 213.4â
mAh g-1 . This study provides a viable route for the practical application of high energy density lithium metal batteries.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article