About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Grain Boundaries, Interfaces, and Surfaces: Fundamental Structure-Property-Performance Relationships
|
| Presentation Title |
Phase Field Modeling of Microstructure-Dependent Effective Electrical Conductivity in Battery Electrodes |
| Author(s) |
Lenissongui Cedric Yeo, Jacob Bair |
| On-Site Speaker (Planned) |
Lenissongui Cedric Yeo |
| Abstract Scope |
This work presents a phase field finite element model in MOOSE to investigate how electrode microstructure controls effective electrical conductivity in batteries. Multiple phases—active material, binder, electrolyte, and pores—are described by individual order parameters, each assigned with its own conductivity tensor and crystallographic orientation. The model concurrently evolves these fields and solves Ohm’s law, capturing local current density and electric field distributions as interfaces migrate. By systematically varying microstructural parameters—phase fractions, grain and particle sizes, and morphology—the framework quantifies their impact on bulk conductivity. Without explicit interface tracking, it accommodates arbitrary multiphase topologies and anisotropies, providing a predictive tool for designing electrode structures that optimize transport properties. The flexible implementation can be extended to include chemo-mechanical coupling or degradation phenomena in future work. |