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Radiolysis as a solution for accelerated ageing studies of electrolytes in Lithium-ion batteries

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  • Daniel Ortiz

    (Institut Rayonnement Matière de Saclay, LIDyL et Service Interdisciplinaire sur les Systèmes Moléculaires et les Matériaux UMR 3299 CNRS/CEA SIS2M Laboratoire de Radiolyse
    Present address: Institut Rayonnement Matière de Saclay, NIMBE, UMR 3685 CNRS/CEA, LIONS, Bâtiment 546, F-91191 Gif-sur-Yvette, France.)

  • Vincent Steinmetz

    (Laboratoire de Chimie-Physique, UMR 8000 CNRS Université Paris Sud, Faculté des Sciences)

  • Delphine Durand

    (CEA/Saclay, DEN/DANS/DPC/SECR/LRMO)

  • Solène Legand

    (CEA/Saclay, DEN/DANS/DPC/SECR/LRMO)

  • Vincent Dauvois

    (CEA/Saclay, DEN/DANS/DPC/SECR/LRMO)

  • Philippe Maître

    (Laboratoire de Chimie-Physique, UMR 8000 CNRS Université Paris Sud, Faculté des Sciences)

  • Sophie Le Caër

    (Institut Rayonnement Matière de Saclay, LIDyL et Service Interdisciplinaire sur les Systèmes Moléculaires et les Matériaux UMR 3299 CNRS/CEA SIS2M Laboratoire de Radiolyse
    Present address: Institut Rayonnement Matière de Saclay, NIMBE, UMR 3685 CNRS/CEA, LIONS, Bâtiment 546, F-91191 Gif-sur-Yvette, France.)

Abstract

Diethyl carbonate and dimethyl carbonate are prototype examples of eco-friendly solvents used in lithium-ion batteries. Nevertheless, their degradation products affect both the battery performance and its safety. Therefore, it is of paramount importance to understand the reaction mechanisms involved in the ageing processes. Among those, redox processes are likely to play a critical role. Here we show that radiolysis is an ideal tool to generate the electrolytes degradation products. The major gases detected after irradiation (H2, CH4, C2H6, CO and CO2) are identified and quantified. Moreover, the chemical compounds formed in the liquid phase are characterized by different mass spectrometry techniques. Reaction mechanisms are then proposed. The detected products are consistent with those of the cycling of Li-based cells. This demonstrates that radiolysis is a versatile and very helpful tool to better understand the phenomena occurring in lithium-ion batteries.

Suggested Citation

  • Daniel Ortiz & Vincent Steinmetz & Delphine Durand & Solène Legand & Vincent Dauvois & Philippe Maître & Sophie Le Caër, 2015. "Radiolysis as a solution for accelerated ageing studies of electrolytes in Lithium-ion batteries," Nature Communications, Nature, vol. 6(1), pages 1-8, November.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms7950
    DOI: 10.1038/ncomms7950
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    Cited by:

    1. Jack E. N. Swallow & Michael W. Fraser & Nis-Julian H. Kneusels & Jodie F. Charlton & Christopher G. Sole & Conor M. E. Phelan & Erik Björklund & Peter Bencok & Carlos Escudero & Virginia Pérez-Dieste, 2022. "Revealing solid electrolyte interphase formation through interface-sensitive Operando X-ray absorption spectroscopy," Nature Communications, Nature, vol. 13(1), pages 1-14, December.

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