Solid‐State Ionics—High‐Conductivity Solid Copper Ion Conductors: Organic Ammonium Halide‐Copper (I) Halide Double Salts

Abstract

The copper ion conductivities of the system organic substituted ammonium halide‐copper(I) halide have been measured in the solid state, and the relation between the formation of high conductivity compounds and the conformation of organic substituted ammonium halides was examined. No high copper ion conductivity was found in the system unsaturated azacyclic substituted ammonium halide‐copper(I) halide, while high copper ion conductivity was found in the saturated azacyclic substituted ammonium halide‐copper (I) halide system. For example, the system 1‐methylpiperidinium bromide‐copper(I) bromide at the composition of 84 mole per cent gave the conductivity of at room temperature.