Solid electrolyte for electromechanical cells and method for the production thereof

摘要

Electrochemical cells are provided having solid electrolytes of enhanced conductivity at low temperatures. These electrolytes comprise binary and ternary mixtures of salts having the compositions-M2SO4-(Me)xSO4 or M2SO4-(Me)xSO4=MyX, respectively where M is-an ion of an alkali metal, Ag, or a mixture thereof, Me is an ion of a divalent metal or Ag, x is 1 or 2, x being 1 when Me is a divalent metal ion and 2 when Me is Ag, X is a halogen or sulfate ion, and y is 1 or 2, y being 1 when X is halogen and 2 when X is sulfate. In addition to having a high conductivity at lower operating temperatures, the phases are stable at least 100 DEG C. above the transformation points.