In:
Advanced Materials, Wiley
Kurzfassung:
Solid‐state lithium‐metal batteries constructed by in‐situ solidification of cyclic ether, are considered to be a critical strategy for the next generation of solid‐state batteries with high energy density and safety. However, the poor thermal/electrochemical stability of linear polyethers and severe interfacial reactions limit its further development. Herein, in‐situ ring‐opening hybrid crosslinked polymerization is proposed for organic/inorganic hybrid polymer electrolyte (HCPE) with superior ionic conductivity of 2.22×10 −3 S cm −1 at 30°C, ultrahigh Li + transference number of 0.88, and wide electrochemical stability window of 5.2 V. These allow highly stable lithium stripping/plating cycling for over 1000 h at 1 mA cm −2 , which also reveal a well‐defined interfacial stabilization mechanism. Thus HCPE endows assembled solid‐state lithium‐metal batteries with excellent long‐cycle performance over 600 cycles at 2 C (25°C) and superior capacity retention of 92.1%. More importantly, our proposed non‐combustible HCPE opens up a new frontier to promote the practical application of high safety and high energy density solid‐state batteries via in‐situ solidification. This article is protected by copyright. All rights reserved
Materialart:
Online-Ressource
ISSN:
0935-9648
,
1521-4095
DOI:
10.1002/adma.202304686
Sprache:
Englisch
Verlag:
Wiley
Publikationsdatum:
2023
ZDB Id:
1474949-X
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