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Binder-induced surface structure evolution effects on Li-ion battery performance

Abstract

A comparative investigation on binder induced chemical and morphological evolution of Li4Ti5O12 electrodes was performed via X-ray photoemission spectroscopy, scanning electron microscopy, and electrochemical measurements. Composite electrodes were obtained using three different binders (PAA, PVdF, and CMC) with 80:10:10 ratio of active material:carbon:binder. The electrochemical performances of the electrodes, were found to be intimately correlated with the evolution of the microstructure of the electrodes, probed by XPS and SEM analysis. Our analysis shows that the surface chemistry, thickness of the passivation layers and the morphology of the electrodes are strongly dependent on the type of binders that significantly influence the electrochemical properties of the electrodes. These results point to a key role played by binders in optimization of the battery performance and improve our understanding of the previously observed and unexplained electrochemical properties of these electrodes.

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Authors (10)

  • Photo of dr Javad Seyed Rezvani

    Javad Seyed Rezvani dr

    • Università di Camerino Physics Division
  • Photo of  Marta Pasqualini

    Marta Pasqualini

    • Università di Camerino Chemistry Division
  • Photo of  Roberto Gunnella

    Roberto Gunnella

    • Università di Camerino Physics Division
  • Photo of dr Agnese Birrozzi

    Agnese Birrozzi dr

    • Università di Camerino Chemistry Division
  • Photo of  Marco Minicucci

    Marco Minicucci

    • Università di Camerino Physics Division
  • Photo of  Hanna Rajantie

    Hanna Rajantie

    • Johnson Matthey Technology Centre, Reading
  • Photo of  Mark P. Copley

    Mark P. Copley

    • Johnson Matthey Technology Centre, Reading
  • Photo of dr Francesco Nobili

    Francesco Nobili dr

    • Università di Camerino Chemistry Division
  • Photo of prof. Andrea DiCicco

    Andrea DiCicco prof.

    • Università di Camerino Physics Division

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Details

Category:
Articles
Type:
artykuł w czasopiśmie wyróżnionym w JCR
Published in:
APPLIED SURFACE SCIENCE no. 435, pages 1029 - 1036,
ISSN: 0169-4332
Language:
English
Publication year:
2018
Bibliographic description:
Rezvani J., Pasqualini M., Witkowska A., Gunnella R., Birrozzi A., Minicucci M., Rajantie H., Copley M., Nobili F., Dicicco A.: Binder-induced surface structure evolution effects on Li-ion battery performance// APPLIED SURFACE SCIENCE. -Vol. 435, (2018), s.1029-1036
DOI:
Digital Object Identifier (open in new tab) 10.1016/j.apsusc.2017.10.195
Verified by:
Gdańsk University of Technology

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