Development of Intercalated Graphite Materials
Abstract
Graphite intercalation compounds were prepared from high-oriented pyrolytic graphite and AsF5 by direct vapor phase synthesis. These compounds were characterized by x-ray and gravimetric analysis and by measurement of the c-axis thickness increase. The c-axis thickness increase proved to be a reliable indicator of stage for stages 1-3; the stochiometry of those stages was found to be C8nAsF5, where n = stage. Room temperature measurements of the optical reflectance were performed from .07-2.0 eV. The compounds showed metallic behavior; the IR reflectance was high and analysis of the plasma edge suggested a high electrical conductivity. This was confirmed by r.f. (100 kHz) eddy- current loss measurements which showed the basal-plane conductivity as high as that of silver. Stability of the stage 3 compounds in air is very good; one sample has shown essentially no change in conductivity after 7100 hours in air. Preliminary work with intercalation of graphite fibers is also reported here; the results of that work are also promising.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1978
- Accession Number
- ADA057503
Entities
People
- Lawrence R. Hanlon
Organizations
- Moore School of Electrical Engineering