DRF: Thesis subject SL-DRF-19-0495
Rechargeable metal-O2 batteries have attracted much attention in recent years as a possible alternative to the widely used lithium-ion batteries. This is particularly the case for lithium and sodium-oxygen batteries, due to their potential high energy densit. However, great challenges remain in the development of M-O2 batteries and in the understanding of the underlying mechanisms taking placed inside M-O2 batteries. Clear identifications of the discharge electrochemical pathways and their products (MO2 or M2O2), as well as the reactivity of the electrolyte, are crucial. The thesis objective is to investigate the electrochemical and chemical reactions in M-O2 batteries under real-time potential cycling using recently emerged in situ solid-state NMR spectroscopy. The thesis will consist of (1) optimizing the recently developed in situ solid-state NMR facility at LSDRM for studying metal-O2 batteries; (2) understanding reaction mechanisms in M-O2 systems; and (3) exploring new routes for improving the battery performance at LEEL.
Service Nanosciences et Innovation pour les Materiaux, la Biomédecine et l'Energie
Laboratoire Structure et Dynamique par Résonance Magnétique (LCF)
Start date of the thesis: 01/10/2019
Sciences Chimiques: Molécules, Matériaux, Instrumentation et Biosystèmes (2MIB)
IRAMIS / NIMBE-UMR3685 / LSDRM
F-91191, Gif-sur-Yvette Cedex