Transport Properties of Aluminum Chloride‐Thionyl Chloride‐Based Electrolytes

Conductance, viscosity, and density of electrolyte solutions with and without sulfur dioxide and sulfur and varying concentration of lithium chloride have been determined as a function of temperature. While the data on system can be interpreted in terms of solute‐solvent interaction forming adducts, those in the presence of sulfur dioxide and lithium chloride have been interpreted in terms of ion‐ion and ion‐solvent interactions and equilibria involving ion pairs and triple ions with complex anions such as and . Data on energy of activation for conductance and for viscous flow along with Walden product are in agreement with this interpretation. The unusually high electrolytic conductance observed for these concentrated electrolyte solutions and the energy of activation data are interpreted in terms of the hopping mechanism for conductance. The implication of increased complexity of solution structure on mass transport during battery discharge is discussed.