| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Materials for Energy Conversion and Storage VI
|
| Presentation Title |
X-ray Imaging of Metallic Anodes for Lithium Ion Batteries and Beyond |
| Author(s) |
Hernando Gonzalez Malabet, George J. Nelson |
| On-Site Speaker (Planned) |
George J. Nelson |
| Abstract Scope |
Tin and tin alloys are promising high capacity anode materials for lithium ion batteries and chemistries “beyond lithium”. Such anodes feature multiple phase transitions during alloying and drastic volume changes that impact battery life. Direct X-ray imaging provides a means for observing structural and chemical changes that occur during cycling of these materials. X-ray imaging has been applied at multiple scales to assess copper-tin alloy anodes during lithiation and delithiation. Ex situ microtomography reveals substantial volume expansion on lithiation and structural collapse upon delithiation. In operando X-ray absorption near edge structure imaging provides complimentary observations of structural and chemical changes. At both scales, the interaction between the active material and supporting phases alters transport networks within the electrode, further influencing performance and reliability. Observations of tin anodes subject to sodiation are presented and compared with alloy behavior during lithiation with an emphasis on structural degradation and interactions between electrode phases. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |