P. Millet is an electrochemical engineer, Professor of physical-chemistry at the University of Paris-Sud, campus of Orsay. He graduated in 1986 from the French “Ecole Nationale Supérieure d’Electrochimie et d’Electrométallurgie de Grenoble” (ENSEEG), “Institut National Polytechnique de Grenoble” (INPG). He completed his PhD thesis on water electrolysis in 1989, at the French “Centre d’Etudes Nucléaires de Grenoble” (CEA-CENG). He is currently Director of the “Laboratory of Research and Innovation in Electrochemistry for Energy applications” (http://www.icmmo.u-psud.fr/Labos/ERIEE/index_eng.php), at the French “Institute of Molecular Chemistry and Material Science” in Orsay. His research activities focus on water electrolysis, water photo-dissociation, carbon dioxide electro- and photo-reduction, hydrogen storage in hydride-forming materials, hydrogen compression and hydrogen permeation across metallic membranes. He is the author of more than 150 research papers and book chapters and has presented more than 150 oral communications at national and international conferences.