Gould Ionics

The first commercial solid state battery was manufactured at the end of the 1960s in the USA by Gould Ionics. This was a silver-iodine battery using RbAg4I5 as electrolyte. An essential constraint on any cell system is that the active components must not react with the electrolyte either directly or by electrolytic action. Free elemental iodine reacts with RbAg4Is, degrading it to poorly conducting phases by the process... 

Solid ionic conductors can also be used in the fabrication of solid state double-layer supercapacitors. An example is the device developed in the late 1960s by Gould Ionics which adopted a cell system using a silver-carbon electrode couple separated by the highly ionically conducting solid electrolyte RbAg4I5 (see Section 9.1) ... 

K. J. Laidler and J. Muirhead-Gould in Chemical Physics of Ionic Solutions (B. E. Conway and R. G Barradas, eds.), Wiley. N.Y. (1966) the data reported here were interpolated from Fig. 3 of this work. 

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