LITHIUM-CORONAND ELECTROLYTES - THERMODYNAMIC AND ELECTROCHEMICAL ASPECTS

The research strategy for the selection of lithium coronand electrolyt es which may be relevant to battery technology is described. Particula r emphasis is placed on the solution thermochemical behaviour of lithi um and lithium coronand electrolytes in acetonitrile, propylene carbon ate and tetrahydrofuran. Enthalpies of coordination referred to reacta nts and products in their pure physical state are used in combination with corresponding solution data for the host, the guest and the resul ting complex to derive for the first time the enthalpies of complexati on of lithium and crown ethers in low permittivity media. The implicat ion of thermodynamic studies on the conductance behaviour of lithium a nd lithium coronand electrolytes in propylene carbonate is quantitativ ely demonstrated in the limiting molar conductivities of these electro lytes in this solvent.