Download or read book Characterization and Prediction of Lithium Plating Due to Fast-charging of Li-ion Batteries written by Polina Brodsky and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: As demand for sustainable and clean transportation continues to increase, matching the refueling capabilities of Electric Vehicles (EVs) to conventional vehicles is a major research and development challenge. To accelerate the adoption of EVs, higher power fast charging must be implemented. Currently, fast charging a battery pack presents several barriers, primarily with respect to cell longevity and safety. One of the main durability issues is caused by lithium plating, a degradation phenomenon that may occur when charging a cell at high C-rate or low temperature conditions. Plating can significantly reduce a cell cycle life and poses serious safety concerns due to potential thermal runaway from internal shorting. For these reasons, it is important to predict the root causes and mechanisms associated to Li-plating and mitigate its effects to prevent the chemical and mechanical degradation of cells during fast charging. This Dissertation seeks to develop physics-based modeling techniques and integrate them with novel experimental testing procedures to predict the cell behavior associated with lithium plating. Fast charge testing was performed with the goal of measuring cell behavior at different conditions by varying charging C-rate, cutoff current, and temperature. The results of this investigation were used to develop a method to detect the onset of lithium plating using specific indicators of the reaction in the collected data. Starting from the test results, a physics-based model predicting the degradation induced by fast charging was created and integrated into two different electrochemical models. In doing so, the specific problem of improving the accuracy of electrochemical models in predicting the cell voltage response during fast charging conditions was investigated. The methods developed in this Dissertation for integrating physics-based models and experimental analysis provide fundamental guidance to conduct a thorough investigation into the factors that govern the onset of plating, as well as provide quantitative information on the effects caused by this phenomenon.