Christine Lefrou is a graduate of ENS (Ecole Normale Supérieure), the elite French institution of higher education and research, and currently a university lecturer at the PHELMA engineering school (Physics, Applied Physics, Electronics and Materials Science), part of the Grenoble Institute of Technology (INP). She teaches electrochemistry on core education courses, as well as on a wide array of continuing education courses. Her research work to date has mainly focused on applying the concept of modeling material transport to the field of electrochemistry (batteries and electroanalysis). Pierre Fabry is a university-trained physicist, who was formerly a professor at Grenoble University (Université Joseph Fourier). He has taught electrochemistry and the structure of materials at university level, (undergraduate and master’s degrees) as well as at engineering schools, and on adult training courses. His research work has focused specifically on the subject of electrochemical solids for high-temperature energy storage systems and electrochemical sensors for biomedical and environmental applications. Jean-Claude Poignet was formerly a Professor of electrochemistry at the Grenoble Institute of Technology (INP). After completing a thesis on the structure and transport properties of molten salts, he then focused his research career on studying low temperature ionic liquids, before turning his attention towards electrochemistry of molten salts between 450 and 1000°C: electrode and electrolyte materials for thermal batteries, Li or Na solutions dissolved in molten LiCI or NaCI, the cathodic separation of lanthanides and actinides and the electrosynthesis of Na, Al, Nb and Pu