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

Javad Seyed Rezvani; Marta Pasqualini; Agnieszka Witkowska; Roberto Gunnella; Agnese Birrozzi; Marco Minicucci; Hanna Rajantie; Mark P. Copley; Francesco Nobili; Andrea DiCicco

doi:10.1016/j.apsusc.2017.10.195

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

Abstrakt

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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Autorzy (10)

Javad Seyed Rezvani dr
- Università di Camerino Physics Division
Marta Pasqualini
- Università di Camerino Chemistry Division
Agnieszka Witkowska dr hab. inż.
Roberto Gunnella
- Università di Camerino Physics Division
Agnese Birrozzi dr
- Università di Camerino Chemistry Division
Marco Minicucci
- Università di Camerino Physics Division
Hanna Rajantie
- Johnson Matthey Technology Centre, Reading
Mark P. Copley
- Johnson Matthey Technology Centre, Reading
Francesco Nobili dr
- Università di Camerino Chemistry Division
Andrea DiCicco prof.
- Università di Camerino Physics Division

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Kategoria:: Publikacja w czasopiśmie
Typ:: artykuł w czasopiśmie wyróżnionym w JCR
Opublikowano w:: APPLIED SURFACE SCIENCE nr 435, strony 1029 - 1036,
ISSN: 0169-4332
Język:: angielski
Rok wydania:: 2018
Opis bibliograficzny:: 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:: Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1016/j.apsusc.2017.10.195
Weryfikacja:: Politechnika Gdańska