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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Informacje szczegółowe

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: 10.1016/j.apsusc.2017.10.195
wyświetlono 4 razy
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