HEXACYANOFERRATE BATTERY ELECTRODE MODIFIED WITH FERROCYANIDES OR FERRICYANIDES

摘要

A transition metal hexacyanoferrate (TMHCF) battery electrode is provided with a Fe(CN)6 additive. The electrode is made from AxMyFez(CN)n.mH2O particles overlying a current collector, where the A cations are either alkali and alkaline-earth cations such as sodium (Na), potassium (K), calcium (Ca), or magnesium (Mg), and M is a transition metal. A Fe(CN)6 additive modifies the AxMyFez(CN)n.mH2O particles. The Fe(CN)6 additive may be ferrocyanide ([Fe(CN)6]4-) or ferricyanide ([Fe(CN)6]3-). Also provided are a related TMHCF battery with Fe(CN)6 additive, TMHCF fabrication process, and TMHCF battery fabrication process.