Electrochemical Stability of Li 10 GeP 2 S 12 and Li 7 La 3 Zr 2 O 12 Solid Electrolytes

The electrochemical stability window of solid electrolyte is overestimated by the conventional experimental method using a Li/electrolyte/inert metal semiblocking electrode because of the limited contact area between solid electrolyte and inert metal. Since the battery is cycled in the overestimated stability window, the decomposition of the solid electrolyte at the interfaces occurs but has been ignored as a cause for high interfacial resistances in previous studies, limiting the performance improvement of the bulk‐type solid‐state battery despite the decades of research efforts. Thus, there is an urgent need to identify the intrinsic stability window of the solid electrolyte. The thermodynamic…

• NS
  National Science Foundation

  Award: 1235719
• UD
  U.S. Department of Energy

  Award: DE-EE0006860
• OO
  Office of Energy Efficiency and Renewable Energy

  Award: DE-EE0006860
• DO
  Division of Materials Research

  Award: TG-DMR130142
• OO
  Office of Energy Efficiency
• AR
  Army Research Laboratory