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Li-ion battery

Nonequilibrium interface behavior in Cahn-Hilliard models for Li-ion batteries

Experiments, numerical simulations, and analytical calculations are used to calibrate a diffuse-interface Cahn-Hilliard model of Li-Sn thin film electrodes that experience a transformation from Sn to Li2Sn5. It is shown that a concentration-gradient dependent mobility can be used in the Cahn-Hilliard equation to give the interface a finite mobility and capture its nonequilibrium behavior.

Zheng Jia's picture

Intrinsic stress mitigation via elastic softening during two-step electrochemical lithiation of amorphous silicon

Zheng Jia, Teng Li, Intrinsic stress mitigation via elastic softening during two-step electrochemical lithiation of amorphous silicon, Journal of the Mechanics and Physics of Solids, 91, 278–290, (2016) (DOI:10.1016/j.jmps.2016.03.014)

 

 

upriyank's picture

PhD and PostDoc Positions: Li-ion batteries for large-scale electrochemical storage systems

Li-ion batteries for large-scale electrochemical storage systems: Fundamental studies, life-prediction and optimization

This project on Li-ion batteries will focus on experimental, theoretical modeling, and numerical simulation-based approaches aimed towards managing electro-chemo-mechanical degradation, capacity fade, and power loss. Moreover, thermal management and safety aspects will be looked at for life-prediction and optimization of Li-ion batteries.

Salary will be commensurate with qualifications and experience.

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