Toby Bond
Senior Scientist
Canadian Light Source
Date: April 23, 2025
Time: 1300-1400h ET
As service lifetimes of electric vehicle (EV) and grid storage batteries continually improve, it has become increasingly important to understand how Li-ion batteries perform after extensive cycling. Using a combination of spatially resolved synchrotron x-ray diffraction and computed tomography, the complex kinetics and spatially heterogeneous behavior of extensively cycled cells can be mapped and characterized under both near-equilibrium and non-equilibrium conditions.
This webinar shows examples of commercial cells with thousands (even tens of thousands) of cycles over many years. The behavior of such cells can be surprisingly complex and spatially heterogeneous, requiring a different approach to analysis and modelling than what is typically used in the literature. Using this approach, the long-term behavior of Ni-rich NMC cells was investigated and ways to prevent degradation were examined. This work also showcases the incredible durability of single-crystal cathodes, which show very little evidence of mechanical or kinetic degradation after more than 20,000 cycles—the equivalent to driving an electric vehicle (EV) for eight million kilometers!
An interactive Q&A session follows the presentation.
Benefits of attending the webinar
Learn about:
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Changes in microstructure and kinetics that occur in commercial cells after thousands of cycles;
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Complex patterns of degradation caused by cathode microcracking;
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How to capture these effects non-destructively in commercial pouch cells and prevent them using single-crystal materials.
Presenter
Toby Bond is Senior Scientist in the Industrial Science Group at Canadian Light Source (CLS), Canada’s national synchrotron facility. He is a specialist in x-ray imaging and diffraction, specializing in in situ and operando analysis of batteries and fuel cells for the CLS’s industry clients. Dr. Bond is an electrochemist by training, who completed his MSc and PhD in Jeff Dahn’s lab at Dalhousie University, focusing on developing methods and instrumentation to characterize long-term degradation in Li-ion batteries.
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