Graphite intercalation compounds are synthetic metals formed by inserting layers of atoms or molecules of a guest chemical species between the layers of carbon atoms that make up graphite. Because carbon occupies a middle position in the order of electronegativity of the elements in the periodic table, graphite welcomes many chemicals as guests, or intercalants, making it possible to produce hundreds of metallic materials. (See figure 1.)
Graphite Intercalation Compounds
Hiroshi Kamimura; Graphite Intercalation Compounds. Physics Today 1 December 1987; 40 (12): 64–71. https://doi.org/10.1063/1.881095
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