Synthesis and characterization of argyrodite solid electrolytes for all-solid-state Li-ion batteries

Zhang, Zhixia; Zhang, Long; Liu, Yanyan; Yu, C.; Yan, Xinlin; Wang, L.

doi:10.1016/j.jallcom.2018.03.027

Synthesis and characterization of argyrodite solid electrolytes for all-solid-state Li-ion batteries

Title

Synthesis and characterization of argyrodite solid electrolytes for all-solid-state Li-ion batteries

Author

Zhang, Zhixia (Yanshan University)
Zhang, Long (Yanshan University)
Liu, Yanyan (Yanshan University)
Yu, C. (TU Delft RST/Fundamental Aspects of Materials and Energy)
Yan, Xinlin (Technische Universitat Wien)
Wang, L. (Yanshan University)

Date

2018-05-30

Abstract

Li6PS5X (X = Cl, Br, I) argyrodites possess high ionic conductivity but with rather scattered values due to various processing conditions. In this work, Li6PS5X solid electrolytes were prepared by solid-state sintering or mechanical alloying and optimized with or without excess Li2S. Solid-state sintering prefers excess Li2S, whereas mechanical alloying prefers stoichiometric Li2S to synthesize high-purity samples with high ionic conductivity. Solid-state sintering is also more suitable than mechanical milling for high ionic conductivity. Li6PS5Cl with the highest ionic conductivity among Li6PS5X was comprehensively characterized for electrochemical performance and air stability. MoS2/Li6PS5Cl all-solid-state batteries assembled with Li6PS5Cl-coated MoS2 as cathode and with Li6PS5Cl as solid electrolyte demonstrate high capacity and good cycling stability.

Subject

All-solid-state batteries
Argyrodites
LiPSCl
Solid electrolytes
Sulfides

To reference this document use:

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DOI

doi:10.1016/j.jallcom.2018.03.027

Embargo date

2020-03-08

Source

Journal of Alloys and Compounds, volume 747

ISSN

0925-8388

Bibliographical note

Accepted Author Manuscript

Part of collection

Institutional Repository

Document type

journal article

Rights