articleChemistry of MaterialsApr 7, 2017Closed access

Interface Stability of Argyrodite Li 6 PS 5 Cl toward LiCoO 2 , LiNi 1/3 Co 1/3 Mn 1/3 O 2 , and LiMn 2 O 4 in Bulk All-Solid-State Batteries

JAJérémie AuvergniotACAlice CasselJLJean‐Bernard LedeuilVVVirginie VialletVSVincent Seznéc

Centre National de la Recherche Scientifique · Université de Pau et des Pays de l'Adour · +3 more institutions

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Abstract

Argyrodite Li6PS5Cl is a good candidate for being a solid electrolyte for bulk all-solid-state Li-ion batteries because of its high ionic conductivity and its good processability. However, the interface stability of sulfide-based electrolytes toward active materials (negative or positive electrodes) is known to be lower than that of oxide-based electrolytes. In this work, we investigate the interface stability of argyrodite toward several positive electrode materials: LiCoO2, LiNi1/3Co1/3Mn1/3O2, and LiMn2O4. All-solid-state half-cells were cycled, and the interface mechanisms were characterized by Auger electron spectroscopy and X-ray photoelectron spectroscopy. We show that Li6PS5Cl is oxidized into…

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Topics & keywords

Topics
Keywords
  • Electrolyte
  • X-ray photoelectron spectroscopy
  • Materials science
  • Electrochemistry
  • Inorganic chemistry
  • Lithium (medication)
  • Fast ion conductor
  • Oxide
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