Studies on Itercalatio/Deintercalation Mechanism of High Polymer Modified Graphite Anode for Lithium Ion Battery

摘要

We modified graphite by covering the surface with polymer (e.g. furfruan resn) to form a carbonized film. the modification of graphite surface greatly improved the performance of carbon anode for lithium ion battery. SEM and XRD results proved that the modification of graphite surface benefit to reduce the particle size of graphite, provide more active sites of Li~+ intercalation. Chronocoulometry showed that the modified graphite could improve the diffusion and transition rate of lithium ions. FTIR spectra showed that the modification of graphtie surface could effectively prevent solvated lithium ions cointercalating.