| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
2025 Technical Division Student Poster Contest
|
| Presentation Title |
SPU-19: Controlling Porosity of Electrosprayed Polyimide Films Through Co-Solvent Blending |
| Author(s) |
Emily Annie Li, Robert A. Green-Warren, Isha Shah, Jonathan P. Singer |
| On-Site Speaker (Planned) |
Emily Annie Li |
| Abstract Scope |
Polyimide (PI) has been identified as a potential material for lithium-ion battery (LIB) separators due to its hydrophilic behavior, thermal stability, and mechanical strength. Using electrospray deposition (ESD), it is possible to create thin uniform films with PI. However, limited control over pore size, porosity, and morphology of PI-coated separators weakens its competitiveness in charge/discharge capacity and cycle life performance, which are both key metrics for LIBs. Finer control of porosity will allow for more efficient ion transport between the anode and cathode, enhancing the battery’s charge and discharge rates. As the purpose of this work, we aim to control film porosity by spraying 1% PI blended with 1,2-dichloroethane (DCE) and chloroform in a 2:1 ratio at various flow rates. Results show a nearly 30% decrease in porosity between the lowest and highest flow rates, highlighting the potential of flow rate control for optimizing battery performance. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Thin Films and Interfaces, Additive Manufacturing, Nanotechnology |