Early transition metal stabilized high capacity cobalt free cathodes for lithium-ion batteries
AssigneeUT-Battelle, LLC
InventorsJagjit Nanda, Ilias Belharouak, Ethan C. Self, Devendrasinh Udaisinh Darbar
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Abstract
A cathode for a lithium battery includes LiNi0.5-x/2Mn0.5-x/2MxO2 where M is at least one selected from the group consisting of Mo, Ti, Cr, Zr and V, and x is between 0.005-0.02. The LiNi0.5-x/2Mn0.5-x/2MxO2 can be coated with Mn2P2O7. The Mn2P2O7 can be 1-3 wt. %, based on the total weight of the LiNi0.5-x/2Mn0.5-x/2 MxO2 and Mn2P2O7. A cathode composition, a lithium battery, and a method of making a lithium battery are also disclosed.
Claims33
A cathode for a lithium battery, comprising LiNi0.5-x/2Mn0.5-x/2MxO2 where M is at least one selected from the group consisting of Mo, Ti, Cr, Zr and V, and x is between 0.005-0.02.
A cathode composition for a lithium battery, comprising LiNi0.5-x/2Mn0.5-x/2MxO2, where M is at least one selected from the group consisting of M=Mo, Ti, Cr, Zr and V, and x is 0.005-0.02.
A lithium battery, comprising:
- a cathode comprising LiNi0.5-x/2Mn0.5-x/2MxO2, where M is at least one selected from the group consisting of Mo, Ti, Cr, Zr and V, and x is 0.005 to 0.02;
- an anode;
- a separator;
- and
- an electrolyte.
A method of making a lithium battery, comprising the steps of:
- providing LiNi0.5-x/2Mn0.5-x/2MxO2, where M is at least one selected from the group consisting of Mo, Ti, Cr, Zr and V, and x is 0.005 to 0.02;
- mixing the LiNi0.5-x/2Mn0.5-x/2MxO2 with conductive carbon, a binder and a solvent to form a slurry, and casting the slurry onto a current collector and drying the slurry to form a cathode;
- combining the cathode with an anode, a separator and an electrolyte to form a battery.
Dependencies are inferred from the claim text.