J-STAGE Data
Browse

Rapid Synthesis of Li10GeP2S12-type Li-Si-P-S-Cl Solid Electrolytes via a Solution Method (Supporting Information)

dataset
posted on 2025-04-01, 08:03 authored by Kazuhiro HIKIMA, Ikuyo KUSABA, Masaki SHIMADA, Yuhei HORISAWA, Shunsuke KAWAGUCHI, Minoru KUZUHARA, Hiroyuki MUTO, Atsunori MATSUDA
Owing to its high ionic conductivity, Li10GeP2S12 (LGPS)-type Li-Si-P-S-Cl (LSiPSCl) solid electrolytes are promising candidates for all-solid-state batteries. This study introduces an LGPS-type LSiPSCl solid electrolyte synthesized rapidly via a solution method using excess sulfur and a solvent mixture of acetonitrile, tetrahydrofuran, and ethanol to enable large-scale production. X-ray diffraction patterns reveal an LGPS-type structure as the primary phase, while FE-SEM analysis confirms the presence of few large particles exceeding 5 µm. The LSiPSCl solid electrolyte synthesized via the solution method exhibits an ionic conductivity of 2.7 mS cm−1, which is comparable to that of the sample synthesized using the mechanical milling method (3.1 mS cm−1). In addition, the all-solid-state battery incorporating LSiPSCl synthesized using the solution method exhibits a slightly higher discharge capacity and similar cycle stability compared with the battery containing LSiPSCl synthesized using the mechanical milling method. These results confirm that the solution method successfully produces an LSiPSCl solid electrolyte. Raman and X-ray photoelectron spectroscopy analyses reveal a carbon surface layer on the particles originating from the solvent. This surface layer is identified as a key factor contributing to the higher discharge capacity of the all-solid-state battery containing the LSiPSCl solid electrolyte synthesized using the solution method. These findings suggest that the surface layer on the particles and/or particle characteristics are critical advantages of solution synthesis for improving battery performance.

Funding

Development of advanced / innovative storage battery material evaluation technology (Phase 2)

New Energy and Industrial Technology Development Organization

Find out more...

Evaluation and development of basic technology for next-generation all-solid-state storage battery materials

New Energy and Industrial Technology Development Organization

Find out more...

History

Corresponding author email address

hikima@ee.tut.ac.jp

Copyright

© 2025 The Author(s).

Common Metadata Elements (Only for the items supported by Japanese public funds)

  • This item includes dataset(s) related to publicly funded research (fill in all the fields below)

Usage metrics

    Electrochemistry

    Categories

    Licence

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC