Site energies in lattice-gas models

The magnitude of the voltage in an electrochemical cell is mainly determined by e in Eqn (7.10) the entropy term gives a variation on the scale of kT/e = 25 mV (Fig. 7.10), and U is typically a small fraction of an electron volt. Calculations of e are complicated by the strong interactions between ions and electrons. We are not yet able to predict site energies reliably from first principles, and so we have to be content to identify different contributions to e. 

The series of compounds Li MoeSe Sg-z shows the effects of the host s 

The appearance of three peaks is the result of an important principle. The interaction between ions or electrons is mainly a local interaction. 

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