Applied Surface Science, volume 586, pages 152790

Revisiting the LiPON/Li thin film as a bifunctional interlayer for NASICON solid electrolyte-based lithium metal batteries

Publication typeJournal Article
Publication date2022-06-01
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor6.7
ISSN01694332
Surfaces, Coatings and Films
General Chemistry
General Physics and Astronomy
Condensed Matter Physics
Surfaces and Interfaces
Abstract
• Li/LiPON bilayer thin film on LAGP improves both interfacial kinetics and stability. • Li thin film between LiPON/LAGP and Li foil reduces the interface resistance by 1/4. • The optimum thickness of LiPON is 250 nm for low resistance and stable cycling. • It restrains the Ge reduction and ensures intimate contact between LAGP and Li foil. • Li/LiPON improves a capacity and stability of all-solid-state Li-oxygen batteries. Emerging solid-state lithium batteries demand a stable solid electrolyte against both Li anodes and high-voltage cathodes. The NASICON-type Li 1.5 Al 0.5 Ge 1.5 (PO 4 ) 3 (LAGP) solid electrolyte is highly tolerant to high-voltage operation and air environments, but it suffers from poor interfacial compatibility with Li anodes. Herein, we revisit the Li/LiPON bilayer thin-film in mature and ultrastable thin-film batteries as a bifunctional interlayer that can resolve both chemical and mechanical interfacial problems between Li anodes and LAGP. Interestingly, defect-free contact of the Li thin film onto LiPON/LAGP dramatically reduces the anode interface impedance between LAGP and Li foil, which eliminates the step for Li foil heating. As a result, it delivers a high capacity and rate capability with a long cycle in all-solid-state Li-O 2 batteries. Moreover, by virtue of a systematic thin-film configuration, a model study with different interlayer combinations as well as LiPON thicknesses clearly distinguishes two degradation mechanisms in LAGP-based cells: chemical reduction of Ge at the anode interface and mechanical contact loss by nonuniform Li stripping/plating upon cycling. Thanks to its exceptional electrochemical stability window, this Li/LiPON-modified LAGP will help to achieve the commercialization of safe and long-lasting solid-state lithium batteries.

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Lee S. H. et al. Revisiting the LiPON/Li thin film as a bifunctional interlayer for NASICON solid electrolyte-based lithium metal batteries // Applied Surface Science. 2022. Vol. 586. p. 152790.
GOST all authors (up to 50) Copy
Lee S. H., Jung S., Yang S., Lee J., Shin H., Kim J., Park S. Revisiting the LiPON/Li thin film as a bifunctional interlayer for NASICON solid electrolyte-based lithium metal batteries // Applied Surface Science. 2022. Vol. 586. p. 152790.
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RIS Copy
TY - JOUR
DO - 10.1016/j.apsusc.2022.152790
UR - https://doi.org/10.1016/j.apsusc.2022.152790
TI - Revisiting the LiPON/Li thin film as a bifunctional interlayer for NASICON solid electrolyte-based lithium metal batteries
T2 - Applied Surface Science
AU - Lee, Seung Hwan
AU - Jung, Soyoung
AU - Yang, Sungeun
AU - Lee, Jongho
AU - Shin, Hyunjung
AU - Kim, Joosun
AU - Park, Sangbaek
PY - 2022
DA - 2022/06/01 00:00:00
PB - Elsevier
SP - 152790
VL - 586
SN - 0169-4332
ER -
BibTex
Cite this
BibTex Copy
@article{2022_Lee,
author = {Seung Hwan Lee and Soyoung Jung and Sungeun Yang and Jongho Lee and Hyunjung Shin and Joosun Kim and Sangbaek Park},
title = {Revisiting the LiPON/Li thin film as a bifunctional interlayer for NASICON solid electrolyte-based lithium metal batteries},
journal = {Applied Surface Science},
year = {2022},
volume = {586},
publisher = {Elsevier},
month = {jun},
url = {https://doi.org/10.1016/j.apsusc.2022.152790},
pages = {152790},
doi = {10.1016/j.apsusc.2022.152790}
}
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