Young's modulus of polycrystalline Li12Si7 using nanoindentation testing

Young's modulus for Li12Si7 was determined from nanoindentation testing. Young's modulus for Li12Si7 was 52.0±8.2GPa. This value is in excellent agreement with estimated values of Young's modulus calculated from predicted values of bulk modulus using density functional theory. ► Polyc...

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Veröffentlicht in:	Journal of power sources 2012-08, Vol.211, p.1-3
Hauptverfasser:	Ratchford, J.B., Crawford, B.A., Wolfenstine, J., Allen, J.L., Lundgren, C.A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: structure, mechanical and thermal properties Exact sciences and technology Li12Si7 Lithium Mechanical and acoustical properties of condensed matter Mechanical properties of solids Physics Silicon Tribology and hardness Young's modulus
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Zusammenfassung:	Young's modulus for Li12Si7 was determined from nanoindentation testing. Young's modulus for Li12Si7 was 52.0±8.2GPa. This value is in excellent agreement with estimated values of Young's modulus calculated from predicted values of bulk modulus using density functional theory. ► Polycrystalline Li12Si7 was synthesized. ► Nanoindentation testing was used to measure Young's modulus for Li12Si7. Young's modulus was 52.0±8.2GPa. ► The experimental values of Young's moduli for Li12Si7 and Li22Si5 are in excellent agreement with estimated values estimated from predicted values of bulk modulus based on density functional theory.
ISSN:	0378-7753 1873-2755
DOI:	10.1016/j.jpowsour.2012.02.027