Battery anode with preloaded metals

摘要

A method is presented for fabricating an anode preloaded with consumable metals. The method provides a material (X), which may be one of the following materials: carbon, metals able to be electrochemically alloyed with a metal (Me), intercalation oxides, electrochemically active organic compounds, and combinations of the above-listed materials. The method loads the metal (Me) into the material (X). Typically, Me is an alkali metal, alkaline earth metal, or a combination of the two. As a result, the method forms a preloaded anode comprising Me/X for use in a battery comprising a M1YM2Z(CN)N.MH2O cathode, where M1 and M2 are transition metals. The method loads the metal (Me) into the material (X) using physical (mechanical) mixing, a chemical reaction, or an electrochemical reaction. Also provided is preloaded anode, preloaded with consumable metals.

主权项

1. A method for fabricating an anode preloaded with consumable metals, the method comprising:
providing a material (X) selected from the group consisting of carbon, metals able to be electrochemically alloyed with a metal (Me), intercalation oxides, electrochemically active organic compounds, and combinations of the above-listed materials; loading the metal (Me) into the material (X), where Me is selected from the group consisting of alkali metals, alkaline earth metals, terbium (Tb), silver (Ag), aluminum (Al) and combinations thereof; forming a preloaded anode comprising Me/X for use in a battery comprising a M1YM2Z(CN)N.MH2O cathode;
where M1 and M2 are independently selected from the group consisting of transition metals, calcium (Ca) and magnesium (Mg);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; wherein loading the metal (Me) into the material (X) includes using an electrochemical reaction as follows:
forming an electrode of X and a counter electrode of Me, both inserted into an electrolyte;performing a plurality of charge and discharge operations, where the charge operation uses an external current source to create a positive voltage potential from the electrode to the counter electrode, and where the discharge operation connects an external load between the electrode and counter electrode;in response to the charge and discharge operations, inserting Me particles into the material (X); and, wherein forming the preloaded anode includes forming a Me/X compound, where Me is chemically reacted with X.