Abstract
Applying mechanical stresses is a possible approach to suppress dendrite and mossy lithium (Li) in Li metal electrodes. We conducted, in this work, nanoindentation tests on pure Li metal in an argon-filled glove box to study its viscoplastic behavior at room temperature. Both load-controlled and strain rate-controlled nanoindentations showed clear viscoplastic characteristics of Li. Based on an iterative finite element (FE) modeling approach, we determined a viscoplastic constitutive law for Li. In addition, we demonstrated by FE modeling that elastic modulus, on the order of GPas, has a negligible influence on the nanoindentation response of Li at ambient temperature.
| Original language | English |
|---|---|
| Pages (from-to) | 191-195 |
| Number of pages | 5 |
| Journal | Scripta Materialia |
| Volume | 130 |
| DOIs | |
| State | Published - Mar 15 2017 |
Bibliographical note
Publisher Copyright:© 2016 Acta Materialia Inc.
Keywords
- Finite element analysis
- Lithium
- Nanoindentation
- Plasticity
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys