Cyanometallate cathode battery and method for fabrication

摘要

A method is provided for fabricating a cyanometallate cathode battery. The method provides a cathode of AXM1YM2Z(CN)N.MH2O, where “A” is selected from a first group of metals, and where M1 and M2 are transition metals. The method provides an anode and a metal ion-permeable membrane separating the anode from the cathode. A third electrode is also provided including “B” metal ions selected from the first group of metals. Typically, the first group of metals includes alkali and alkaline metals. The method intercalates “B” metal ions from the third electrode to the anode, the cathode, or both the anode and cathode to form a completely fabricated battery. In one aspect, a solid electrolyte interface (SEI) layer including the “B” metal ions overlies a surface of the anode, the cathode, or both the anode and cathode. A cyanometallate cathode battery is also provided.

主权项

1. A method for fabricating a cyanometallate cathode battery, the method comprising:
providing a cathode of AXM1YM2Z(CN)N.MH2O;
where “A” is selected from a first group of metals;where M1 and M2 are selected from a second group of metals including transition metals;where X is less than or equal to 2;where Y is less than or equal to 1;where Z is less than or equal to 1;where N is less than or equal to 6;where M is less than or equal to 20; providing an anode; proving a metal ion-permeable membrane separating the anode from the cathode; providing a third electrode including “B” metal ions selected from the first group of metals; intercalating “B” metal ions from the third electrode to an electrode selected from a group consisting of the anode, the cathode, and both the anode and cathode; forming a completely fabricated battery; subsequent to forming the completely fabricated battery, discharging the battery in response to creating a battery external voltage potential between the cathode and the anode; and, forming a cathode of BDAX′M1YM2Z(CN)N.MH2O;
where D>0; and,where X′ is less than or equal to X.