Abstract
Solid-state lithium metal batteries face a critical barrier to commercial scaling: catastrophic short-circuiting caused by lithium dendrite propagation during high-rate charging cycles. Traditional approaches attempt to solve this via exotic chemical coatings or artificial solid-electrolyte interphases (SEI), which inevitably fracture under repeated mechanical stress. This paper presents a non-chemical engineering alternative that suppresses dendrite nucleation mechanically right at the boundary layer.
By applying the Dimensionally Extended Holographic Projection (DEHP) model, the solid-electrolyte interface is treated as a 2D viscoelastic transport plane resting at equilibrium (z=0). Integrated piezoelectric substrate transducers project high-frequency Surface Acoustic Waves (SAWs) directly across the interfacial boundary layer. These wave fields induce localized acoustic streaming forces that disrupt and redistribute stagnant ion accumulations. A continuous-time mathematical formulation derives the coupled advection-diffusion transport equations governing ion flux. We provide a production-ready Python simulation showing that under heavy current loads (≥ 5 mA/cm²), acoustic wave modulation forces localized concentration gradients to flatten into a completely uniform distribution, rendering dendritic nucleation physically impossible.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
Eckes, Christopher L., "Mitigation of Interfacial Ion Crowding and Dendrite Nucleation in Solid-State Lithium Batteries via Surface Acoustic Wave Streaming under the DEHP Substrate Model", Technical Disclosure Commons, ()
https://www.tdcommons.org/dpubs_series/11071