The Perfectly Nonstoichiometric Compounds Type-I Electrode

These compounds are defined by the intercalation reaction, Eq. (3.3) for which the X quantity can vary continuously from zero to a maximum value x ax as 0 X Xmax. We define  

The type I electrode is an ideal case for the reversible electrochemical reaction where the transport of matter occurs through a double flux of charged species 

The host lattice (//) keeps this integrity through the intercalation reaction, fixing the concentration of sites available for A ions. The chemical potential of the ionic contribution is  

Equation (3.19) implies two possibilities one type of site is limiting  

Or both types of sites are simultaneously limiting y, = ye = 3 = potential for the type I electrode is given by  

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