Journal Article

FZJ-2019-01033

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Stabilizing the Interface of NASICON Solid Electrolyte against Li Metal with Atomic Layer Deposition

Liu, Y. ; Sun, Q. ; Zhao, Y. ; Wang, B. ; Kaghazchi, P. (Corresponding author)FZJ* ; Adair, K. R. ; Li, R. ; Zhang, C. ; Liu, J. ; Kuo, L.-Y.FZJ* ; Hu, Y. ; Sham, T.-K. ; Zhang, L. ; Yang, R. ; Lu, S. ; Song, X. ; Sun, X.

2018
Soc. Washington, DC

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Please use a persistent id in citations: doi:10.1021/acsami.8b06366

Abstract: Solid-state batteries have been considered as one of the most promising next-generation energy storage systems because of their high safety and energy density. Solid-state electrolytes are the key component of the solid-state battery, which exhibit high ionic conductivity, good chemical stability, and wide electrochemical windows. LATP [Li1.3Al0.3Ti1.7 (PO4)3] solid electrolyte has been widely investigated for its high ionic conductivity. Nevertheless, the chemical instability of LATP against Li metal has hindered its application in solid-state batteries. Here, we propose that atomic layer deposition (ALD) coating on LATP surfaces is able to stabilize the LATP/Li interface by reducing the side reactions. In comparison with bare LATP, the Al2O3-coated LATP by ALD exhibits a stable cycling behavior with smaller voltage hysteresis for 600 h, as well as small resistance. More importantly, on the basis of advanced characterizations such as high-resolution transmission electron spectroscope-electron energy loss spectroscopy, the lithium penetration into the LATP bulk and Ti4+ reduction are significantly limited. The results suggest that ALD is very effective in improving solid-state electrolyte/electrode interface stability.

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Contributing Institute(s):

1. Werkstoffsynthese und Herstellungsverfahren (IEK-1)

Research Program(s):

1. 131 - Electrochemical Storage (POF3-131) (POF3-131)

Appears in the scientific report 2019

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Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; IF >= 5 ; JCR ; NCBI Molecular Biology Database ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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