Multifunctional Coatings on Sulfide-Based Solid Electrolyte Powders with Enhanced Processability, Stability, and Performance for Solid-State Batteries.

Autor: Hood ZD; Applied Materials Division, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, IL, 60439, USA., Mane AU; Applied Materials Division, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, IL, 60439, USA., Sundar A; Materials Science Division, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, IL, 60439, USA., Tepavcevic S; Materials Science Division, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, IL, 60439, USA., Zapol P; Materials Science Division, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, IL, 60439, USA., Eze UD; Applied Materials Division, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, IL, 60439, USA., Adhikari SP; Applied Materials Division, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, IL, 60439, USA., Lee E; Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, IL, 60439, USA., Sterbinsky GE; X-ray Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois, 60439, USA., Elam JW; Applied Materials Division, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, IL, 60439, USA., Connell JG; Materials Science Division, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, IL, 60439, USA.
Jazyk: angličtina
Zdroj: Advanced materials (Deerfield Beach, Fla.) [Adv Mater] 2023 May; Vol. 35 (21), pp. e2300673. Date of Electronic Publication: 2023 Apr 05.
DOI: 10.1002/adma.202300673
Abstrakt: Sulfide-based solid-state electrolytes (SSEs) exhibit many tantalizing properties including high ionic conductivity and favorable mechanical properties for next-generation solid-state batteries. Widespread adoption of these materials is hindered by their intrinsic instability under ambient conditions, which makes them difficult to process at scale, and instability at the Li||SSE and cathode||SSE interfaces, which limits cell performance and lifetime. Atomic layer deposition is leveraged to grow thin Al 2 O 3 coatings on Li 6 PS 5 Cl powders to address both issues simultaneously. These coatings can be directly grown onto Li 6 PS 5 Cl particles with negligible chemical modification of the underlying material and enable exposure of powders to pure and H 2 O-saturated oxygen environments for ≥4 h with minimal reactivity, compared with significant degradation of the uncoated powder. Pellets fabricated from coated powders exhibit ionic conductivities up to 2× higher than those made from uncoated material, with a simultaneous decrease in electronic conductivity and significant suppression of chemical reactivity at the Li-SSE interface. These benefits result in significantly improved room temperature cycle life at high capacity and current density. It is hypothesized that this enhanced performance derives from improved intergranular properties and improved Li metal adhesion. This work points to a completely new framework for designing active, stable, and scalable materials for next-generation solid-state batteries.
(© 2023 UChicago Argonne, LLC. Advanced Materials published by Wiley-VCH GmbH.)
Databáze: MEDLINE
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