Characterization of SEI Layer Formed on Tin Film Anode

Ling Zhi Zhao; Xin Fang Lai; Qiao Li Niu; Chang Ming Li

doi:10.4028/www.scientific.net/AMR.512-515.1869

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 512-515Characterization of SEI Layer Formed on Tin Film...

Characterization of SEI Layer Formed on Tin Film Anode

Abstract:

Tin thin film on Cu foil substrate as the anode of lithium ion battery was prepared by direct current (DC) magnetron sputtering. The surface morphology and the solid electrolyte interphase (SEI) layer were characterized by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS). It is found that the SEI layer should be formed on the surface of the tin electrode after initial discharge processes, just like the carbon anode of lithium ion battery. The SEI layer undergoes continuous reformation during the initial cycles. The tin in the electrode can be covered completely by SEI layer after 3^rd discharge process. The carbon in SEI layer is mainly in the form of -CO₃^2- , which makes up about 54.5 at%.

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Periodical:

Advanced Materials Research (Volumes 512-515)

Pages:

1869-1872

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.512-515.1869

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Online since:

May 2012

Authors:

Ling Zhi Zhao, Xin Fang Lai, Qiao Li Niu, Chang Ming Li

Keywords:

Formation, Lithium-Ion Battery, SEI Layer, Sn, XPS

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