Potential Modulated Intercalation Of Alkali Cations Into Metal Hexacyanoferrate Coated Electrodes

Ions intercalate or deintercalate into metal hexacyanoferrate to maintain charge neutrality when iron centers in the matrix are reduced or oxidized, respectively. Nickel hexacyanoferrate (NiHCF) is known to preferentially intercalate cesium over other alkali cations, thus providing a basis for separation. This program is studying potential-driven cation intercalation and deintercalation in metal hexacyanoferrate compounds, with the goal of (1) quantifying the ion exchange selectivity properties for cation mixtures, (2) enhancing ion exchange capacities, and (3) improving the material stability