Synthesis of a metastable vanadium pentoxide as a cathode material for ion batteries
AssigneeThe Texas A&M University System
InventorsSarbajit Banerjee, Justin L. Andrews
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Abstract
A highly scalable process has been developed for stabilizing large quantities of the zeta-polymorph of V2O5, a metastable kinetically trapped phase, with high compositional and phase purity. The process utilizes a beta-CuxV2O5 precursor which is synthetized from solution using all-soluble precursors. The copper can be leached from this structure by a room temperature post-synthetic route to stabilize an empty tunnel framework entirely devoid of intercalating cations. The metastable ζ-V2O5 thus stabilized can be used as a monovalent-(Li, Na) or multivalent-(Mg, Ca, Al) ion battery cathode material.
Claims12
A battery comprising:
- an anode;
- an electrolyte;
- a cathode comprising:
- a conductive agent;
- a polymeric binder;
- and
- a plurality of wires or rods having the formula ζ-V2O5, wherein ζ-V2O5 is intercalated with one or more metal ions, wherein ζ-V2O5 has a structure configured for reversible metal ion insertion, wherein the structure comprises one or more tunnels that are perpendicular to a length of one or more wires or rods of the plurality of wires or rods, and wherein the one or more tunnels are configured to be reversibly inserted with the one or more metal ions over at least 100 cycles of the battery.
Dependencies are inferred from the claim text.