Preparation of Graphite Interlayer Compounds on the Carbon Fiber Surface by Electrochemical Method

Abstract

Because of its excellent performance, graphite interlayer compounds (GICs) get the attention of scholars and researchers recently. Electrochemical method was used in this paper to insert alkali metal lithium into the face of highly graphitized carbon fiber (T300) to improve the electrical conductivity. And the structure and all of its inter-layer particle binding ways were characterized by using X-ray diffraction, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Raman spectroscopy, at the same time through tensile test and conductive adhesive method the mechanical and electrical properties were characterized. Finally, a kind of carbon fiber composites with high strength and high conductivity can be prepared. The surface of this composite is the alkali metal-graphite interlayer compounds (Li-GICs), and the core is carbon fiber. In addition, there is no substantial decline in mechanical properties as well as the improvement in electrical conductivity.