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Liquid-Assisted Mechanochemical Synthesis of LiI-Doped Sulfide Glass Electrolyte

Hosseini, Seyed Milad 1; Varzi, Alberto ORCID iD icon 1; Tsujimura, Tomoyuki; Aihara, Yuichi; Passerini, Stefano 1
1 Karlsruher Institut für Technologie (KIT)


Inorganic solid electrolytes (ISEs) gain tremendous attention during the past decade for application in energy storage. Among different classes of ISEs, sulfides are particularly appealing due to their higher ionic conductivity, ductility, and lower density compared with oxides. However, most of the preparation methods proposed so far require either the time-consuming mechanical ball-milling process or the energy-consuming high-temperature solid-state reaction. Herein, a new and fast liquid-assisted approach to synthesize LiI-doped glassy Li$_{2}$S-P$_{2}$S$_{5}$ (LPS) with excellent electrochemical and morphological features is reported. The obtained solid electrolyte offers an ionic conductivity of 1.2 mS cm$^{-1}$ at room temperature and establishes a rather stable interphase with lithium. These enable rather high critical current densities (up to 1 mA cm$^{-2}$), as well as enhanced cathode active material utilization in solid-state lithium metal cells.

Verlagsausgabe §
DOI: 10.5445/IR/1000136007
Veröffentlicht am 30.07.2021
DOI: 10.1002/ente.202100385
Zitationen: 4
Web of Science
Zitationen: 4
Zitationen: 3
Cover der Publikation
Zugehörige Institution(en) am KIT Helmholtz-Institut Ulm (HIU)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 2194-4288, 2194-4296
KITopen-ID: 1000136007
HGF-Programm 38.02.01 (POF IV, LK 01) Fundamentals and Materials
Erschienen in Energy Technology
Verlag Wiley-VCH Verlag
Band 9
Heft 8
Seiten Art. Nr.: 2100385
Vorab online veröffentlicht am 01.07.2021
Nachgewiesen in Dimensions
Web of Science
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