| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior at the Nanoscale V
|
| Presentation Title |
N-13: Mechanical Properties of Electrochemically Lithiated Tin |
| Author(s) |
Chung Su Hong, Seung Min Han |
| On-Site Speaker (Planned) |
Chung Su Hong |
| Abstract Scope |
Sn has emerged as one of the most promising Li ion battery anode due to its high theoretical capacity to replace the conventional graphite anodes in lithium ion batteries. With its low melting point and low modulus and strength, Sn has the ability to relax stresses via plasticity and creep deformations that occur during lithitation/delithiation cycling. However, to understand these mechanical behavior problems, FEM modeling is required, but the accuracy of these mechanical properties of lithiated Sn is uncertain. In this study, nanoindentation experiments on lithiated Sn was performed under the protection of mineral oil to obtain accurate measurements of hardness and modulus of different phases of lithiated Sn. Supporting other research, Young’s modulus and the hardness of lithiated tin are found to decline with increasing lithium content. The fully lithiated Sn phase, Li22Sn5 was determined to be 26.3 GPa, which is lower than the reported value. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |