Operando nuclear magnetic resonance spectroscopy: Detection of the onset of metallic lithium deposition on graphite at low temperature and fast charge in a full Li-ion battery - Archive ouverte HAL Access content directly
Journal Articles Journal of Magnetic Resonance Year : 2023

Operando nuclear magnetic resonance spectroscopy: Detection of the onset of metallic lithium deposition on graphite at low temperature and fast charge in a full Li-ion battery

Abstract

Lithium-ion batteries are at the core of the democratisation of electric transportation and portative electronic devices. However, fast and/or low temperature charge induce performance loss, mainly through lithium plating, a degrading mechanism. In this report, 7 Li operando Nuclear Magnetic Resonance spectroscopy is used to detect the onset of metastable lithium deposits in an NMC622/graphite cell at 0°C and fast charge. An operando setup, compatible with low temperatures, was developed with special attention to the pressure applied on the electrodes/separator stack and noise reduction to enable early detection and good time-resolution. Direct detection of metallic lithium enables drawing correlations between lithium plating and electrochemical data.
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Dates and versions

hal-04272140 , version 1 (06-11-2023)

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Ludivine Afonso de Araujo, Vincent Sarou-Kanian, David Sicsic, Michael Deschamps, Elodie Salager. Operando nuclear magnetic resonance spectroscopy: Detection of the onset of metallic lithium deposition on graphite at low temperature and fast charge in a full Li-ion battery. Journal of Magnetic Resonance, 2023, 354, pp.107527. ⟨10.1016/j.jmr.2023.107527⟩. ⟨hal-04272140⟩
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