| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Materials for Energy Conversion and Storage 2024
|
| Presentation Title |
Understanding the Mechanics of Na+ Storage into Hard Carbons from Real-time Stress Measurement During Electrochemical Cycling |
| Author(s) |
Amit Chanda, Abdulrahman Alfadhli, Akshay Pakhare, Vijay Anand Sethuraman, Siva Prasad Varma Nadimpalli |
| On-Site Speaker (Planned) |
Amit Chanda |
| Abstract Scope |
The design and development of sodium-ion batteries (SIB) are becoming essential for large-scale energy storage, considering the restricted availability of lithium. Hard carbon (HC) composites are one of the most explored anode materials for SIBs, but their mechanical behavior has not been explored. The volume expansion and stresses in Li-ion battery electrodes were studied successfully during cycling. However, the sodium ion storage mechanism and corresponding volume expansion of HC anodes are not fully understood and are still under extensive research. Understanding the mechanical behavior of HC during electrochemical cycling is important for developing durable Na-ion batteries.
To this end, stress evolution in HC composite electrodes was measured in real-time during sodiation/de-sodiation cycling using a substrate-curvature method. Stress generated during cycling was compressive and increased to 11 – 15 MPa during sodiation. Further, in this talk, we will present how stress measurements can enable us to understand the Na-ion storage mechanisms. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Energy Conversion and Storage, Other, Other |