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Dr. Hab.
Jean-François Colin has been researching and characterizing new materials for lithium-ion batteries for more than two decades.
He obtained a PhD in Materials Chemistry from the University of Caen Basse-Normandie in 2007, with a focus on the development of oxides for lithium-ion system anodes. He then went on to the Paul Scherrer Institute in Switzerland for a postdoctorate (2008 to 2010) on the synthesis and testing of Li-rich cathodes, which included setting up in situ battery characterization protocols.
He has been a research engineer at the CEA since 2010, developing new materials for lithium-ion batteries, including Li-rich cathodes, high-potential anodes, and solid sulfur electrolytes. He has also developed multiscale operando characterization techniques.
In 2020, he obtained his accreditation to supervise research (Habilitation à Diriger des Recherches, or HDR). Today, his research contributes significantly to the development of energy storage technologies essential for the energy transition.
- Development of oxides for use in Li-ion battery electrodes;
- Development of operando characterization methods (mainly structural analyses) using large instruments.
By combining two AI models with transfer learning techniques, researchers from CEA-Liten and CEA-Leti have managed to estimate the state of health of Li-ion batteries with unprecedented levels of accuracy. What’s more, these results were based on a real-world dataset of just 40 cells! This major breakthrough will help improve battery use and extend their lifespan.
All-solid-state batteries are a promising avenue for the next generation of energy storage systems, especially for electric vehicles, aerospace and defense. It could increase the - energy density at the cell level by up to 50% while also improving system safety. One of the main challenge to industrialize this technology is to scale up the fabrication of very thin and uniform lithium metal negative electrode In 2022, the CEA, Saft (a TotalEnergies company), and Automotive Cells Company (ACC) kicked off a joint R&D project to address these issues. The initial results have just been published.
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CEA is a French government-funded technological research organisation in four main areas: low-carbon energies, defense and security, information technologies and health technologies. A prominent player in the European Research Area, it is involved in setting up collaborative projects with many partners around the world.