Electrostatic effects in the cohesion of an intercalant lattice

Abstract
Electrostatic contributions to cohesion of an intercalated ion lattice are examined. Employing a sandwich model consisting of point charges and fixed bounding compensating charge sheets, we obtain a minimum in the electrostatic energy at a finite intercalant density, unlike the situation for any isotropic solid. Scaling arguments are applied to yield analytic results for the constant energy surfaces and potential energy as a function of intercalant density. The results suggest the additional importance of nonelectrostatic contributions to cohesion of intercalant lattices in the graphite intercalation compounds.