TY - JOUR
T1 - Probing the Mechanical Properties of a Doped Li7La3Zr2O12Garnet Thin Electrolyte for Solid-State Batteries
AU - Fu, Zhezhen
AU - Zhang, Lei
AU - Gritton, J. Evans
AU - Godbey, Griffin
AU - Hamann, Tanner
AU - Gong, Yunhui
AU - McOwen, Dennis
AU - Wachsman, Eric
N1 - Publisher Copyright:
© 2020 American Chemical Society.
PY - 2020/6/3
Y1 - 2020/6/3
N2 - Using the nanoindentation technique, we probed the mechanical properties of tape cast and sintered thin doped Li7La3Zr2O12 garnet electrolytes. For comparison, a bulk garnet sample fabricated by die pressing and sintering was also studied. The results indicate that the thin sample has a significantly higher elastic modulus (∼155 GPa), hardness (∼11 GPa), and indentation fracture toughness (∼1.12 ± 0.12 MPa·m1/2) than the bulk sample (∼142 GPa, ∼10 GPa, and ∼0.97 ± 0.10 MPa·m1/2, respectively). The above results demonstrate that the thin sample can more effectively prevent lithium dendrite penetration due to its better mechanical properties. Deformation and creep behavior analysis further indicates that the thin sample (1) has a higher resistance to withhold the charge/discharge stress and consequently deformation and (2) a lower creep exponent and likely high resistance to brittle failure.
AB - Using the nanoindentation technique, we probed the mechanical properties of tape cast and sintered thin doped Li7La3Zr2O12 garnet electrolytes. For comparison, a bulk garnet sample fabricated by die pressing and sintering was also studied. The results indicate that the thin sample has a significantly higher elastic modulus (∼155 GPa), hardness (∼11 GPa), and indentation fracture toughness (∼1.12 ± 0.12 MPa·m1/2) than the bulk sample (∼142 GPa, ∼10 GPa, and ∼0.97 ± 0.10 MPa·m1/2, respectively). The above results demonstrate that the thin sample can more effectively prevent lithium dendrite penetration due to its better mechanical properties. Deformation and creep behavior analysis further indicates that the thin sample (1) has a higher resistance to withhold the charge/discharge stress and consequently deformation and (2) a lower creep exponent and likely high resistance to brittle failure.
UR - http://www.scopus.com/inward/record.url?scp=85086051472&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85086051472&partnerID=8YFLogxK
U2 - 10.1021/acsami.0c01681
DO - 10.1021/acsami.0c01681
M3 - Article
C2 - 32374150
AN - SCOPUS:85086051472
SN - 1944-8244
VL - 12
SP - 24693
EP - 24700
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 22
ER -