CCST Seminar: Robert Kee
Microstructural behavior of Li-ion battery electrode
Because performance of Li-ion batteries depends greatly upon physics and chemistry at the electrode microscale, fundamental understanding at this scale is important. The microstructural geometry can be reconstructed from full batteries using focused-ion-beam—scanning-electron-microscopy (FIB-SEM) techniques or X-ray tomography. Using a combination of finite-volume and finite-element methods, three-dimensional computational models are developed to solve conservation equations representing electrochemical, thermal, and mechanical behavior. The models are valuable in helping to understand performance under ordinary operating conditions, and in predicting behavior in abnormal circumstances such as the heating associated with accident scenarios. By coupling the electrochemistry models with mechanical models, mechanical damage such as electrode fracture can be predicted. Because of great scale disparities between a complete electrode and its microstructure, effective physical and chemical properties are required to model at the larger cell and system scales. In addition to advancing fundamental understanding and insight at the microscale, the models provide the quantitative means to evaluate and validate the effective properties needed in upscaling.
Thursday, February 27, 2014 at 11:00am to 12:00pm
Colburn Lab, Room 366
University of Delaware- Colburn Lab, University of Delaware, 150 Academy St, Newark, DE 19716-3196, USA
- Event Type
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Lectures & Programs, Students, College of Engineering, Academics
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- Departments
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Chemical & Biomolecular Engineering, Center Catalytic Science & Technology
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- ENGR - Chemical & Biomolecular Engineering
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- Contact Name
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Mary Walsh
- Contact Phone
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302-831-8056
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