ELETTROLITI A SOLVENTI ORGANICI PER GENERATORI ELETTROCHIMICI DI GRANDE ENERGIA SPECIFICA,E GENERATORI CHE LI COMPRENDONO

摘要

Electrolytes for use in lithium primary cells are made from a mixture of three organic solvents and an alkaline solute. The first solvent is chosen to have a dielectric constant greater than 35 (e.g. propylene carbonate), the second solvent is a linear polyether with its ether functional groups in the gamma position (e.g. 1-2 dimethoxyethane) and the third solvent has a high solvation power for dissolving large quantities of the alkaline salt (e.g. 1-3 dioxolane). The solvents are so chosen that the conductivity maxima of the electrolytes that would be obtained by mixing the solvents in pairs are higher than the conductivity maxima of the electrolytes that would be obtained by using each of the solvents on its own. The positive electrode cell using the electrolyte may be cupric oxide or ferrous disulphide.