Compliant Yet Brittle Mechanical Behavior of Li2S–P2S5 Lithium‐Ion‐Conducting Solid Electrolyte

Young's modulus, hardness, and fracture toughness are measured by instrumented nanoindentation for an amorphous Li2S–P2S5 Li‐ion solid electrolyte. Although low elastic modulus suggests accommodation of significant chemomechanical strain, low fracture toughness can facilitate brittle crack form...

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Bibliographic Details
Published in:Advanced energy materials 2017-06, Vol.7 (12), p.n/a
Main Authors: McGrogan, Frank P., Swamy, Tushar, Bishop, Sean R., Eggleton, Erica, Porz, Lukas, Chen, Xinwei, Chiang, Yet‐Ming, Van Vliet, Krystyn J.
Format: Article
Language:English
Subjects:
Brittle fracture
chemistry
Electrolytes
energy & fuels
Fracture toughness
Hardness
Li-ion conductors
Lithium ions
MATERIALS SCIENCE
Mechanical properties
Modulus of elasticity
Nanoindentation
physics
solid electrolytes
Strain
sulfides
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Summary:Young's modulus, hardness, and fracture toughness are measured by instrumented nanoindentation for an amorphous Li2S–P2S5 Li‐ion solid electrolyte. Although low elastic modulus suggests accommodation of significant chemomechanical strain, low fracture toughness can facilitate brittle crack formation in such materials.
ISSN:1614-6832
1614-6840
DOI:10.1002/aenm.201602011