Probing the Mechanical Properties of a Doped Li7La3Zr2O12 Garnet Thin Electrolyte for Solid-State Batteries

• DOI: 10.1021/acsami.0c01681
• Publication Date: 2020-05-06T14:02:59Z
• Authors: Zhezhen Fu; Lei Zhang; J. Evans Gritton; Griffin Godbey; Tanner Hamann; Yunhui Gong; Dennis McOwen; Eric Wachsman
• Keywords: Indentation; Brittleness

Using the nanoindentation technique, we probed mechanical properties of tape cast and sintered thin doped Li7La3Zr2O12 garnet electrolytes. For comparison, a bulk sample fabricated by die pressing sintering was also studied. The results indicate that has significantly higher elastic modulus (∼155 GPa), hardness (∼11 indentation fracture toughness (∼1.12 ± 0.12 MPa·m1/2) than (∼142 GPa, ∼10 ∼0.97 0.10 MPa·m1/2, respectively). above demonstrate can more effectively prevent lithium dendrite penetration due to its better properties. Deformation creep behavior analysis further indicates (1) resistance withhold charge/discharge stress consequently deformation (2) lower exponent likely high brittle failure.