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Operando NMR characterization of a metal-air battery using a double-compartment cell design

Magali Gauthier 1, * Minh Hoang Nguyen 1 Lucie Blondeau 1 Eddy Foy 2, 3 Alan Wong 4, *
* Corresponding author
1 LEEL - UMR 3685 - Laboratoire d'Etudes des Eléments Légers
NIMBE UMR 3685 - Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M)
2 LAPA - UMR 3685 - Laboratoire Archéomatériaux et Prévision de l'Altération
NIMBE UMR 3685 - Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M)
4 LSDRM - Laboratoire Structure et Dynamique par Résonance Magnétique (LCF)
NIMBE UMR 3685 - Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M)
Abstract : Applying operando investigations is becoming essential for acquiring fundamental insights into the reaction mechanisms and phenomena at stake in batteries currently under development. The capability of a real-time characterization of the charge/discharge electrochemical pathways and the reactivity of the electrolyte is critical to decipher the underlying chemistries and improve the battery performance. Yet, adapting operando techniques for new chemistries such as metal-oxygen (i.e. metal-air) batteries introduces challenges in the cell design due notably to the requirements of an oxygen gas supply at the cathode. Herein a simple operandocell is presented with a two-compartment cylindrical cell design for NMR spectroscopy. The design is discussed and evaluated. Operando 7 Li static NMR characterization on a Li-O 2 battery was performed as a proof-of-concept. The productions of Li 2 O 2 , mossy Li/Li dendrites and other irreversible parasitic lithium compounds were captured in the charge/discharge processes, demonstrating the capability of tracking the evolution of the anodic and cathodic chemistry in metal-oxygen batteries.
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Submitted on : Tuesday, April 6, 2021 - 7:59:46 AM
Last modification on : Thursday, April 8, 2021 - 3:42:56 AM

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Magali Gauthier, Minh Hoang Nguyen, Lucie Blondeau, Eddy Foy, Alan Wong. Operando NMR characterization of a metal-air battery using a double-compartment cell design. Solid State Nuclear Magnetic Resonance, Elsevier, 2021, 113, pp.101731. ⟨10.1016/j.ssnmr.2021.101731⟩. ⟨cea-03190081⟩

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