Electrochemical behavior of Inhcf in alkali metal electrolytes

The paper characterizes electrochemical properties of indium hexacyanoferrates (Inhcf). The cyclic voltammetric response in the presence of different metal alkali cations of divalent cations and of hydronium has been investigated. The Inhcf can exchange reversibly with all of these cations. This feature makes the Inhcf a good candidate for many electrochemical applications where a source or sink of metal cations is needed, e.g., electrochromic and energy storage devices. A prototype electrochromic system based on an Inhcf and Cohcf couple has been assembled and tested.