Accurate Measurements of Li+ Dynamics in Pressure-Treated Solid Electrolytes by Powder X‑ray Diffraction and 7Li Magnetic Resonance Diffusometry

Applying fabrication pressure is an inevitable step when preparing solid electrolytes (SEs) for all-solid-state batteries (ASSBs). Utilizing 7Li diffusometry and relaxometry nuclear magnetic resonance (NMR) measurements, this study demonstrates that the long-range ion transport in sulfide SEs, measured by diffusometry, is slowed by 20% following the application of pressure of 500 MPa. The local range relaxometry measurements show a more modest …