ההרצאתו של פרופ' ז'אן מארי טרסקון, ראש הרשת המחקרית בצרפת לאחסון אנרגיה אלקטרוכימית, קולז' דה פרנס, פריז, במסגרת בימת דיקן הפקולטה למדעי הטבע.
נושא ההרצאה: מחומרים ואלקטרוליטיים חדשניים ועד לכימיה חדשה בבטריות בנות־קיימה
From Materials-Electrolyte Innovations to New Sustainable Battery Chemistries
Professor Jean-Marie Tarascon
College de France, Paris; Director of the French Research Network on Electrochemical Energy Storage
Batteries, as one of the most versatile energy storage technologies, play a central role in the ongoing transition from fossil fuels to renewable energy. They are becoming the heart of our society owing to the key role they play within the field of electrical mobility, grid applications and connected objects. Therefore, the enhancement of the battery performance, reliability, longevity and sustainability becomes a crucial challenge for the years to come, as it will enable to reduce their environment footprint and contribute to climatic neutrality. To meet this challenge, new materials concepts together with novel chemistries, advanced electrolyte designs and innovative sensing strategies are sorely needed. This presentation will address these various aspects through specific examples. Firstly, regarding new concepts, we will show how the discovery of anionic redox activity has helped in unraveling numerous Li-rich layered oxides or sulfides electrode materials with high capacity electrodes. Towards, higher energy density systems, recent advances on solid state Li batteries relying on Li-rich sulfide electrodes will be discussed. Concerning new chemistry, we will present our new findings with the Na-ion chemistry, which enlists the confection of an optimized electrolyte, that enable the practical development of the Na-ion technology. Lastly, the benefits of adding sensing and self-healing functionalities within a battery will be presented with a strong emphasis on optical sensing that represent a transformational change in the science of battery diagnoses. Through these examples, we hope to convey that the future of battery offers exciting opportunities as long as we are willing to explore new risky paths.
Jean-Marie Tarascon is a Solid-State Chemistry scientist. He started his carrier in the U.S., first at Cornell University (1980), and subsequently at Bell Labs and Bellcore until 1994. He then became professor at the Université de Picardie Jules Verne and director of the Laboratoire de Réactivité et Chimie des Solides (LRCS UMR CNRS 7314) in Amiens. In 2011, he founded the French Research Network on Electrochemical Energy Storage (RS2E), a CNRS research federation grouping together industrial and academic actors in the battery and supercapacitor fields.
Among his first research topics were the electronic properties of Chevrel phases as well as their ability to insert alkali cations. At the end of the 1980’s, Jean-Marie Tarascon headed the chemistry group at Bellcore and worked at high Tc cuprates supraconductors and the role of oxygen non-stoichiometry, cationic substitutions, magnetism or structure modulation. He thereafter came back to electrochemistry and became a globally recognized specialist on energy storage. Jean-Marie Tarascon’s credits as a battery researcher include the development of a plastic and flexible Li-ion battery. Since he moved back to France, he has been working on advanced technologies for tomorrow’s batteries, enlisting the development of new “chimie douce” synthesis routes for battery materials, Li-rich layered materials, metal-air batteries and electrocatalytic reactions as well as redox flow systems and other technologies beyond Li-ion batteries (for instance Na-ion batteries). He accepted the Chair of Solid-State Chemistry and Energy (Chimie du Solide et Energie) at the Collège de France in 2014, where he has been a professor since.