Exploring the Silicon Anode in Solid-state Batteries using COMSOL simulation
Primary Investigator (PI) Name
Beibei Jiang
Department
SPCEET – Electrical and Computer Engineering
Abstract
Nanostructured silicon is a promising alternative to graphite for lithium-ion battery anodes due to its high specific capacity. When integrated with solid-state electrolytes, silicon-based all-solid-state batteries (ASSBs) offer the potential for higher energy density, greater power output, and improved safety. However, the large volume changes associated with the silicon–lithium alloying process can compromise structural integrity and cycling stability. Past research has shown that volumetric expansion can be limited when nanostructured silicon is used as anode. To investigate the size-dependent behavior of silicon anodes, we developed a COMSOL simulation platform for ASSBs incorporating nanostructured silicon particles ranging from 10 nm to 1 μm. The COMSOL model predicts both electrochemical performance and mechanical performance of the battery, providing insights that will guide experimental validation of the particle size effects on silicon anode performance.
Disciplines
Electronic Devices and Semiconductor Manufacturing
Exploring the Silicon Anode in Solid-state Batteries using COMSOL simulation
Nanostructured silicon is a promising alternative to graphite for lithium-ion battery anodes due to its high specific capacity. When integrated with solid-state electrolytes, silicon-based all-solid-state batteries (ASSBs) offer the potential for higher energy density, greater power output, and improved safety. However, the large volume changes associated with the silicon–lithium alloying process can compromise structural integrity and cycling stability. Past research has shown that volumetric expansion can be limited when nanostructured silicon is used as anode. To investigate the size-dependent behavior of silicon anodes, we developed a COMSOL simulation platform for ASSBs incorporating nanostructured silicon particles ranging from 10 nm to 1 μm. The COMSOL model predicts both electrochemical performance and mechanical performance of the battery, providing insights that will guide experimental validation of the particle size effects on silicon anode performance.