Lithium-ion (Li-ion) batteries represent one of the most advanced technologies for energy storage and, due to their high energy density and long lifespan, are increasingly playing a significant role. These characteristics make them suitable for a wide range of applications, from electronic devices to the automotive sector. However, a thorough understanding of the internal mechanisms of the cells and their performance under various operating conditions is essential for improving safety, efficiency, and longevity. This master's thesis, conducted within the Electrochemical Energy Storage and Conversion Lab (EESCoLab), focuses on the experimental characterization of Li-ion cells through electrochemical impedance spectroscopy (EIS), galvanostatic intermittent titration technique (GITT), and thermal characterization in a climatic chamber. The tests were performed using the BCS-815 cycler from BioLogic, available at EESCoLab. The results obtained provide a detailed overview of the performance of pouch Li-ion cells NMC, contributing to a better understanding of their behavior under different operating conditions.
Le batterie agli ioni di litio (Li-ion) rappresentano una delle tecnologie più avanzate per l'accumulo di energia e, grazie alla loro elevata densità energetica e lunga durata, stanno assumendo un ruolo sempre più rilevante. Queste caratteristiche le rendono idonee a una vasta gamma di applicazioni, dai dispositivi elettronici al settore automobilistico. Tuttavia, una comprensione approfondita dei meccanismi interni delle celle e delle loro prestazioni in diverse condizioni operative è fondamentale per migliorare sicurezza, efficienza e longevità. Questo lavoro di tesi magistrale, condotto all'interno del laboratorio Electrochemical Energy Storage and Conversion lab (EESCoLab), si concentra sulla caratterizzazione sperimentale delle celle agli ioni di litio attraverso test di spettroscopia di impedenza (EIS), galvanostatic intermittent titration technique (GITT) e caratterizzazioni termiche in camera climatica. I test sono stati effettuati utilizzando il ciclatore BCS-815 della BioLogic in dotazione ad EESCoLab. I risultati ottenuti offrono un quadro dettagliato delle prestazioni delle celle pouch Li-ion NMC, contribuendo a una maggiore comprensione delle loro performance in diverse condizioni operative.
Analisi sperimentale delle prestazioni elettriche e termiche di celle pouch agli ioni di litio
BORTOLAN, LETIZIA
2023/2024
Abstract
Lithium-ion (Li-ion) batteries represent one of the most advanced technologies for energy storage and, due to their high energy density and long lifespan, are increasingly playing a significant role. These characteristics make them suitable for a wide range of applications, from electronic devices to the automotive sector. However, a thorough understanding of the internal mechanisms of the cells and their performance under various operating conditions is essential for improving safety, efficiency, and longevity. This master's thesis, conducted within the Electrochemical Energy Storage and Conversion Lab (EESCoLab), focuses on the experimental characterization of Li-ion cells through electrochemical impedance spectroscopy (EIS), galvanostatic intermittent titration technique (GITT), and thermal characterization in a climatic chamber. The tests were performed using the BCS-815 cycler from BioLogic, available at EESCoLab. The results obtained provide a detailed overview of the performance of pouch Li-ion cells NMC, contributing to a better understanding of their behavior under different operating conditions.File | Dimensione | Formato | |
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Bortolan_Letizia.pdf
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https://hdl.handle.net/20.500.12608/78316