Design of a Multifunctional Interlayer for NASCION-Based Solid-State Li Metal Batteries

Shizhao Xiong , Y. Liu , Piotr Jankowski , Qiao Liu , Florian Nitze , Kai Xie , J. Song , Aleksandar Matic

Abstract

NASCION-type Li conductors have great potential to bring high capacity solid-state batteries to realization, related to its properties such as high ionic conductivity, stability under ambient conditions, wide electrochemical stability window, and inexpensive production. However, their chemical and thermal instability toward metallic lithium (Li) has severely hindered attempts to utilize Li as anode material in NASCION-based battery systems. In this work, it is shown how a tailored multifunctional interlayer between the solid electrolyte and Li anode can successfully address the interfacial issues. This interlayer is designed by creating a quasi-solid-state paste in which the functionalities of LAGP (Li1.5Al0.5Ge1.5(PO4)3) nanoparticles and an ionic liquid (IL) electrolyte are combined. In a solid-sate cell, the LAGP-IL interlayer separates the Li metal from bulk LAGP and creates a chemically stable interface with low resistance (≈5 Ω cm2) and efficiently prevents thermal runaway at elevated temperatures (300 °C). Solid-state cells designed with the interlayer can be operated at high current densities, 1 mA cm−2, and enable high rate capability with high safety. Here developed strategy provides a generic path to design interlayers for solid-state Li metal batteries.

Author Shizhao Xiong - [Xi'an Jiaotong University]
Shizhao Xiong,,
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, Y. Liu - [COBRA Research Institute (COBRA) [Eindhoven University of Technology (TU/e)]]
Y. Liu,,
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- COBRA Research Institute
, Piotr Jankowski (FC / CofIC)
Piotr Jankowski,,
- Chair Of Inorganic Chemistry
, Qiao Liu - [Xi'an Jiaotong University]
Qiao Liu,,
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, Florian Nitze - [Chalmers University of Technology]
Florian Nitze,,
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, Kai Xie - [National University of Defense Technology]
Kai Xie,,
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, J. Song
J. Song,,
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, Aleksandar Matic - [Chalmers University of Technology]
Aleksandar Matic,,
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Journal seriesAdvanced Functional Materials, ISSN 1616-301X, e-ISSN 1616-3028
Issue year2020
Vol30
ASJC Classification1603 Electrochemistry; 2502 Biomaterials; 2504 Electronic, Optical and Magnetic Materials; 3104 Condensed Matter Physics
DOIDOI:10.1002/adfm.202001444
Languageen angielski
Score (nominal)200
Score sourcejournalList
ScoreMinisterial score = 200.0, 03-09-2020, ArticleFromJournal
Publication indicators Scopus Citations = 1; Scopus SNIP (Source Normalised Impact per Paper): 2018 = 2.347; WoS Impact Factor: 2018 = 15.621 (2) - 2018=14.755 (5)
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