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Understanding the Reactivity of a Thin Li1.5Al0.5Ge1.5(PO4)3 Solid–State Electrolyte toward Metallic Lithium Anode

Journal Article · · Advanced Energy Materials
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  1. Hydro‐Québec, Varennes, QC (Canada)
  2. Argonne National Laboratory (ANL), Lemont, IL (United States)
  3. Argonne National Laboratory (ANL), Lemont, IL (United States); Stanford University, CA (United States); Imam Abdulrahman Bin Faisal University (IAU), Dammam (Saudi Arabia)
+ Show Author Affiliations
The thickness of solid-state electrolytes (SSEs) significantly affects the energy density and safety performance of all-solid-state lithium batteries. However, a sufficient understanding of the reactivity toward lithium metal of ultrathin SSEs (<100 μm) based on NASICON remains lacking. Herein, for the first time, a self-standing and ultrathin (70 μm) NASICON-type Li1.5Al0.5Ge1.5(PO4)3 (LAGP) electrolyte via a scalable solution process is developed, and X-ray photoelectron spectroscopy reveals that changes in LAGP at the metastable Li-LAGP interface during battery operation is temperature dependent. Severe germanium reduction and decrease in LAGP particle size are detected at the Li-LAGP interface at elevated temperature. As a result, oriented plating of lithium metal on its preferred (110) face occurs during in situ X-ray diffraction cycling.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Vehicle Technologies Office; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1658602
Alternate ID(s):
OSTI ID: 1637402
Journal Information:
Advanced Energy Materials, Journal Name: Advanced Energy Materials Journal Issue: 32 Vol. 10; ISSN 1614-6832
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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Related Subjects

25 ENERGY STORAGE
NASICON
interface
lithium metal
plating