Conditions Extrêmes et Matériaux : Haute Température et Irradiation

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M.Tang, M.Deschamps, 'In situ NMR Techniques for Li-ion Batteries', NMR and MRI of Electrochemical Energy Storage Materials and Devices 16 483-512 (2021)

In situ characterization plays a crucial role in unveiling the mechanisms of batteries under operation conditions. Nuclear Magnetic Resonance (NMR) can effectively serve as a non-invasive approach to capture the evolution of electrodes and electrolyte upon electrochemical cycling. The insights into metaphase formation, self-diffusion, kinetics and inhomogeneity that are obtained along temporal and spatial dimensions from in situ NMR/MRI can serve as a guide for the structural design and modification of materials, and for the fabrication of batteries with optimized performance. This chapter focuses on the applications of in situ NMR/MRI for the energy storage community. In particular, some examples of 1H, 7Li, 23Na and 31P in situ NMR applications in different electrodes as well as in situ MRI on electrolytes and electrodes with or without chemical shift information (CSI, S-ISIS, and strayfield MRI) are presented. Furthermore, in situ NMR applied to other energy systems is briefly summarized, and finally the limitations and perspectives of in situ NMR/MRI for working batteries are discussed.