Rate capability of lithium intercalation into nano-porous graphitized carbons

概要

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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 °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 372 mA g− 1. Electrochemical impedance spectra indicated that formation of SEI layers caused increased polarization.
2008-09-30