Sodium iron(II)-hexacyanoferrate(II) battery electrode
AssigneeSharp Laboratories of America, Inc.
InventorsYuhao Lu, Sean Andrew Vail
Life of this patent
Estimating the term…
Abstract
A method is provided for synthesizing sodium iron(II)-hexacyanoferrate(II). A Fe(CN)6 material is mixed with the first solution and either an anti-oxidant or a reducing agent. The Fe(CN)6 material may be either ferrocyanide ([Fe(CN)6]4−) or ferricyanide ([Fe(CN)6]3−). As a result, sodium iron(II)-hexacyanoferrate(II) (Na1+XFe[Fe(CN)6]Z.MH2O is formed, where X is less than or equal to 1, and where M is in a range between 0 and 7. In one aspect, the first solution including includes A ions, such as alkali metal ions, alkaline earth metal ions, or combinations thereof, resulting in the formation of Na1+XAYFe[Fe(CN)6]Z.MH2O, where Y is less than or equal to 1. Also provided are a Na1+XFe[Fe(CN)6]Z.MH2O battery and Na1+XFe[Fe(CN)6]Z.MH2O battery electrode.
Claims6
A sodium iron(II)-hexacyanoferrate(II) battery electrode, the battery electrode comprising:
- a current collector;
- sodium iron(II)-hexacyanoferrate(II) (Na1+XFe[Fe(CN)6]Z.MH2O) overlying the current collector,
- where X and Z are each less than or equal to 1;
- and,
- where M is in a range of 0 to 7.
A sodium iron(II)-hexacyanoferrate(II) battery comprising:
- a cathode comprising:
- a current collector;
- sodium iron(II)-hexacyanoferrate(II) (Na1+XFe[Fe(CN)6]Z.MH2O) overlying the current collector,
- where X AND Z are each less than or equal to 1;
- where M is in a range of 0 to 7;
- an anode;
- an electrolyte;
- and,
- an ion-premeable membrane.
Dependencies are inferred from the claim text.