Hexacyanoferrate battery electrode modified with ferrocyanides or ferricyanides
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United States of America Patent
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Aug 4, 2015
Grant Date -
Oct 10, 2013
app pub date -
May 20, 2013
filing date -
Mar 28, 2012
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Abstract
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.
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