Electrochemical characteristics of amorphous silicon carbide film as a lithium-ion battery anode.

ABSTRACT: The electrochemical reactions of SiC film with Li⁺ have been investigated by electrochemical characterization and X-ray photoelectron spectroscopy. The SiC film is prepared by inductively-coupled-plasma chemical-vapor-deposition (ICP-CVD) technique and displays an amorphous state due to the low processing temperature (∼350 °C). An irreversible reaction of SiC with Li⁺ occurs with the formation of lithium silicon carbide (Li _x Si _y C) and elemental Si, followed by a reversible alloying/dealloying reaction of the elemental Si with Li⁺. The 500 nm SiC film shows an initial reversible specific capacity of 917 mA h g^-1 with a capacity retention of 41.0% after 100 cycles at 0.3C charge/discharge current, and displays

SUBMITTER: Huang XD 

PROVIDER: S-EPMC9078100 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature