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In situ real-time gravimetric and viscoelastic probing of surface films formation on lithium batteries electrodes

Author

Listed:
  • Vadim Dargel

    (Bar-Ilan University)

  • Netanel Shpigel

    (Bar-Ilan University)

  • Sergey Sigalov

    (Bar-Ilan University)

  • Prasant Nayak

    (Bar-Ilan University)

  • Mikhael D. Levi

    (Bar-Ilan University)

  • Leonid Daikhin

    (Tel Aviv University)

  • Doron Aurbach

    (Bar-Ilan University)

Abstract

It is generally accepted that solid–electrolyte interphase formed on the surface of lithium-battery electrodes play a key role in controlling their cycling performance. Although a large variety of surface-sensitive spectroscopies and microscopies were used for their characterization, the focus was on surface species nature rather than on the mechanical properties of the surface films. Here we report a highly sensitive method of gravimetric and viscoelastic probing of the formation of surface films on composite Li4Ti5O12 electrode coupled with lithium ions intercalation into this electrode. Electrochemical quartz-crystal microbalance with dissipation monitoring measurements were performed with LiTFSI, LiPF6, and LiPF6 + 2% vinylene carbonate solutions from which structural parameters of the surface films were returned by fitting to a multilayer viscoelastic model. Only a few fast cycles are required to qualify surface films on Li4Ti5O12 anode improving in the sequence LiPF6

Suggested Citation

  • Vadim Dargel & Netanel Shpigel & Sergey Sigalov & Prasant Nayak & Mikhael D. Levi & Leonid Daikhin & Doron Aurbach, 2017. "In situ real-time gravimetric and viscoelastic probing of surface films formation on lithium batteries electrodes," Nature Communications, Nature, vol. 8(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_s41467-017-01722-x
    DOI: 10.1038/s41467-017-01722-x
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