Lithium in Nanoporous Carbon Materials Produced from SiC

Abstract

Bulk nanoporous carbon materials (NPCMs) obtained from SiC by chlorination have a high total porosity up to 70 and nanoporosity about 50%. These materials have been intercalated with lithium at the temperature range 30–200 °C by vacuum deposition and diffusion. The major analytical tools for study included neclear reaction method and X-ray diffraction. The diffusion coefficient of lithium was found to be a function of the diffusion duration. The effect of the interaction of lithium with pore walls and intercalation process on the value of D_Li is discussed. It was found that the phase composition lithiated samples depends on the ratio between the deposition and diffusion duration. The condition for producing the samples uniformly impregnated by Li have been determined. Time stability obtained NPC∶Li composites have been studied.