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The partial thermodynamic functions Z~Li and Z~Li for LixTil.0sS 2 (0.13 ~ x a 0.97) and Li0.9sCoO 2 were obtained from EMF-temperature measurements (T = -30-20°C). For LixTil.oaS2, the x-dependence of these quantities is discussed in relation to a semiempirical expression for the EMF-x relation. The electronic component of the thermoelectric power in LixTil.0aS 2 (0 ~ x ~ 0.97, T = 50-200°C) and LixCoO 2 (0.20 ~ x ~ 1.00, T = 30-400°C) was determined. From the sign of the (electronic) Seebeck coefficient it followed that LixTil.03S 2 is a n-type and LixCoO 2 a ptype electronic conductor. The influence of the amount of inserted lithium and temperature dependence on the Seebeck coefficient is discussed. A new method to determine the ionic heat of transport directly from the ionic Seebeck coefficient was developed. This method was applied to LixTil.oaS 2 (0.61 ~ x ~ 0.97, T = -30-30°C). The heat of transport is much smaller than the activation enthalpy for Li+-conduction, indicating a high ionic polaron binding energy. Thermogravimetric analysis indicates that LixCoO 2 with x < 1 decomposes to LilCoO2 and Co203 at temperatures higher than 80°C. This is sustained by the data for the electronic Seebeck coefficient. Also the thermodynamic, thermoelectric and kinetic data of LixTil.03S 2 are critically compared with those of AgxTiS 2.

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