Quantitative Study of Solid Electrolyte Particle Dispersion and Compression Processes in All-Solid-State Batteries Using DEM

DOI
  • OTANI Kazufumi
    Nissan Motor Corporation, Research Center Department of Chemical Engineering, Kyushu University
  • YANO Takeru
    Department of Chemical Engineering, Kyushu University
  • AKIZUKI Ken
    Nissan Motor Corporation, Research Center
  • AOTANI Koichiro
    Nissan Motor Corporation, Research Center
  • INOUE Gen
    Department of Chemical Engineering, Kyushu University

Description

<p>All-solid-state batteries (ASSBs) are expected to be next-generation batteries owing to their safety and suitability for high-temperature operation. While traditional lithium-ion batteries use liquid electrolytes that enable easy electrolyte filling after electrode fabrication, ASSBs use solid electrolyte particles. Thus, electrolyte particles must be dispersed alongside the active materials and additives during electrode preparation. The dispersion state of the electrolyte influences subsequent electrode formation and structure; however, experimentally quantitatively controlling and evaluating the dispersion states remains challenging. This study used powder simulation to control the dispersion state quantitatively, based on the aggregation size of solid electrolyte particles. It also evaluated the compression process and the resulting electrode structure.</p>

Journal

  • Electrochemistry

    Electrochemistry advpub (0), 2025

    The Electrochemical Society of Japan

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