In:
Angewandte Chemie, Wiley
Abstract:
Halide solid electrolytes, known for their high ionic conductivity at room temperature and good oxidative stability, face notable challenges in all–solid–state Li–ion batteries (ASSBs), especially with unstable cathode/solid electrolyte (SE) interface and increasing interfacial resistance during cycling. In this work, we have developed an Al 3+ –doped, cation–disordered epitaxial nanolayer on the LiCoO 2 surface by reacting it with an artificially constructed AlPO 4 nanoshell; this lithium–deficient layer featuring a rock–salt–like phase effectively suppresses oxidative decomposition of Li 3 InCl 6 electrolyte and stabilizes the cathode/SE interface at 4.5 V. The ASSBs with the halide electrolyte Li 3 InCl 6 and a high–loading LiCoO 2 cathode demonstrated high discharge capacity and long cycling life from 3 to 4.5 V. Our findings emphasize the importance of specialized cathode surface modification in preventing SE degradation and achieving stable cycling of halide–based ASSBs at high voltages.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.202400562
Language:
English
Publisher:
Wiley
Publication Date:
2024
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505868-5
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514305-6
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505872-7
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1479266-7
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506259-7
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