Solid State Ionics, Vol.179, No.27-32, 1706-1709, 2008
Rate capability of lithium intercalation into nano-porous graphitized carbons
Nano-porous graphitized carbons were successfully prepared by using mono-dispersed SiO2 Colloidal crystal as a template and mesophase pitch as a carbon source with final heat treatment temperatures (HTT) of 1000-2500 degrees C. Rate capability of lithium intercalation/de-intercalation of the nano-porous graphitized carbons was investigated. 35-60% of capacities were retained when the current density was increased from 37.2 mA g(-1) to 3 72 mA g(-1). Electrochemical impedance spectra indicated that formation of SEI layers caused increased polarization. (c) 2008 Elsevier B.V. All rights reserved.