NEWMASTE is a multidisciplinary project lasting 3 years involving academic and industrial skills. The main objective is to develop a recently patented * silicon-based nanostructured composite material and move from the lab scale to the pilot scale for the production of optimized material that can be used as a negative electrode of Li-ion accumulator. The composite material has at least twice the capacity provided by current graphite electrodes. The main stages of this development are: 1.- optimization of the composition and morphology of the composite and improvement of the interface between the material and the electrolyte so as to obtain a high energy density and long life expectancy ; Improving the faradic efficiency of charging is a key point. 2. - the definition and development of new manufacturing processes for the composite material and the treatment of its surface. 3.- The design and testing of the complete accumulator containing the new anode material based on: i) understanding the aging mechanism in cycling and taking into account safety; ii) The optimal protocol for the electrode manufacturing process; (iii) evaluation of the performance of the material and its life in a complete accumulator; iv) Coupling evaluation to intermittent energy sources for electrical storage. 4.- the technical and economic evaluation of the processes. 5.- Recycling evaluation and life cycle analysis of the accumulator with new material and electrolyte. This ambitious project represents a technological breakthrough for Li-ion batteries and motivated a Belgian industrial partner to participate in its own funds. The project is an original approach to developing and producing anodic material for a high capacity Li-ion battery with a long service life. In 2012, a closely related project named NAMASTE was submitted to the PROGELEC call. It was listed as a complementary list and ranked just after the last funded proposal. It received a very positive assessment on the quality of the consortium, the methodological approach, the industrial support, the scientific quality and the economic impact. NAMASTE partners are convinced of the feasibility and success of this research project and continued their efforts in 2012 to obtain conclusive preliminary results. These results have been published in recent scientific publications. In addition, new and very promising results were obtained on new composites, which considerably increases the chances of success of the new project: NEWMASTE. It should be noted that the industrial challenges on the development of Si base anodes remain bright because, despite the many announcements, no silicon-based Li-ion battery has been commercialized yet due to the problems related to the strong volume change and anode aging during electrochemical cycling. * The new material has been the subject of a joint CNRS and SAFT patent application in Europe and the United States.
Rapport final : 5
Publication scientifique : 100
Emplois crées : 15
Brevet : 10
Thèse : 5
Fin du projet le 01 / 10 / 2023
Domaines d'activité stratégiques
Systèmes électriques pour les mobilités
Électronique : matériaux, composants et sous-systèmes
Réseaux électriques intelligents
Bâtiments et territoires intelligents
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