Articles
A Novel Aminoalkyldisiloxane Compound as a Film-Forming Electrolyte Additive for Graphite Anode
2015 Volume 83 Issue 7 Pages 537-540
Details
2015 Volume 83 Issue 7 Pages 537-540
An aminoalkyldisiloxane compound, (2-(N,N-dimethylamino)ethoxy)propyl pentamethyldisiloxane (DSC3N1), was investigated as a film-forming electrolyte additive for graphite anode. The graphite/Li cells with 1 vol% DSC3N1 addition exhibited superior electrochemical performances compared with those in the base electrolyte (1 M LiPF6 in EC/DEC; v/v = 1/1). The film-forming capability of DSC3N1 on the surface of graphite was investigated by scanning electron microscope, energy dispersive spectroscope, and FT-IR analysis. A comparative hydrolysis experiment of the electrolyte with/without DSC3N1 additive using 19F-NMR technique demonstrates that DSC3N1 exhibited acid scavenging property and inhibited the hydrolysis of LiPF6.
