Potential Modulated Intercalation Of Alkali Cations Into Metal Hexacyanoferrate Coated Electrodes

Schwartz, Daniel T.

University of Washington

关键词: Mixtures;    Hydroxides;    Electrodes;    37 Inorganic, Organic, Physical And Analytical Chemistry;    Clathrates;   

DOI  :  10.2172/828574
RP-ID  :  EMSP-60123--2001
RP-ID  :  FG07-97ER14819
RP-ID  :  828574

美国|英语

来源: UNT Digital Library

【 摘 要 】

Nickel hexacyanoferrate is a polynuclear inorganic ion intercalation material that loads (intercalates) and elutes (deintercalates) alkali cations from its structure when electrochemically reduced and oxidized, respectively. Nickel hexacyanoferrate (NiHCF) is known to preferentially intercalate cesium over all other alkali cations, thus providing a basis for a separation scheme that can tackle DOE's radiocesium contamination problem. This program studied fundamental issues in alkali cation intercalation and deintercalation in nickel hexacyanoferrate compounds, with the goal of (1) quantifying the ion exchange selectivity properties for cation mixtures, (2) enhancing ion exchange capacities, and (3) and understanding the electrochemically-switched ion exchange process (ESIX).