Surface molecular engineering to enable processing of sulfide solid electrolytes in humid ambient air

Abstract Sulfide solid-state electrolytes (SSEs) are promising candidates to realize all solid-state batteries (ASSBs) due to their superior ionic conductivity and excellent ductility. However, their hypersensitivity to moisture requires processing environments that are not compatible with today’s lithium-ion battery manufacturing infrastructure. Herein, we present a reversible surface modification strategy that enables the processability of sulfide SSEs (e. g., Li 6 PS 5 Cl) under humid ambient air. We demonstrate that a long chain alkyl thiol, 1-undecanethiol, is chemically compatible with the electrolyte with negligible impact on its ion conductivity. Importantly, the thiol modification extends the amount…

• NS
  National Science Foundation

  Awards: DMR-2308708, 2308708, DMR-2011967, ECCS-2025752, CHE-1338173, 2025752, 2011924, 1650114, DMR-2011924, 1338173
• UI
  UC Irvine Materials Research Institute

  Award: DMR-2011967
• UO
  University of California, Santa Barbara

  Awards: 1650114, DMR-2308708
• UO
  University of California, San Diego

  Awards: DMR-2011924, ECCS-2025752
• UO
  University of California, Irvine

  Award: DMR-2011967
• MR
  Materials Research Science and Engineering Center, Harvard University

  Awards: DMR-2308708, 1650114, DMR-2011967
• DO
  Division of Materials Research

  Awards: DMR-2011967, 2308708, DMR-2308708, CHE-1338173, 2011967, DMR-2011924, 2011924
• DO
  Division of Electrical, Communications and Cyber Systems

  Awards: 2025752, ECCS-2025752
• DO
  Division of Chemistry

  Awards: CHE-1338173, 1338173
• MR
  Materials Research Science and Engineering Center, University of California, San Diego

  Award: DMR-2011924