Lithiated oxide materials and methods of manufacture
AssigneeIlion Technology Corporation
InventorsJens Martin Paulsen, Loan Yen Kieu, Brett Graeme Ammundsen
Life of this patent
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Abstract
A single phase cathodic material for use in an electrochemical cell represented by the formula: Li[LixCoyA1−x−y]O2 wherein A=[MnzNi1−z]; wherein x is a numerical value ranging from approximately 0.00 to approximately 0.16; wherein y is a numerical value ranging from approximately 0.1 to approximately 0.30; wherein z is a numerical value ranging from approximately 0.40 to approximately 0.65; and wherein Lix is included in transition metal layers of the structure and/or wherein the material comprises a layered R-3m crystal structure having a c/a ratio greater than approximately 1.012.
Claims39
A single phase cathodic material for use in an electrochemical cell represented by the formula:
- Li[LixCoyA1−x−y]O2
- wherein A=[MnzNi1−z];
- wherein x is a numerical value ranging from greater than 0.00 to approximately 0.16;
- wherein y is a numerical value ranging from approximately 0.1 to approximately 0.30;
- wherein z is a numerical value ranging from approximately 0.40 to approximately 0.65;
- and
- wherein Lix is included in transition metal layers of the structure.
A single phase cathodic material for use in an electrochemical cell represented by the formula:
- Li[LixCoyA1−x−y]O2
- wherein A=[MnzNi1−z];
- wherein x is a numerical value ranging from greater than 0.0 to approximately 0.16;
- wherein y is a numerical value ranging from approximately 0.1 to approximately 0.30;
- wherein z is a numerical value ranging from approximately 0.4 to approximately 0.65;
- wherein Lix is included in transition metal layers of the structure;
- and/or
- wherein the material comprises a layered R-3m crystal structure having a c/a ratio greater than approximately 1.012.
An electrode for use in an electrochemical cell, comprising:
- a current collector;
- and
- a cathodic active material applied to the current collector, wherein the active material is represented by the formula:
- Li[LixCoyA1−x−y]O2
- wherein A=[MnzNi1−z];
- wherein x is a numerical value ranging from greater than 0.0 to approximately 0.16;
- wherein y is a numerical value ranging from approximately 0.1 to approximately 0.30;
- wherein z is a numerical value ranging from approximately 0.4 to approximately 0.65;
- and
- wherein Lix is included in transition metal layers of the structure.
An electrochemical cell, comprising:
- an electrolyte;
- an anodic electrode;
- and
- a cathodic electrode, wherein the cathodic electrode includes a current collector and a cathodic active material applied to the current collector, wherein the active material is represented by the formula:
- Li[LixCoyA1−x−y]O2
- wherein A=[MnzNi1−z];
- wherein x is a numerical value ranging from greater than 0.0 to approximately 0.16;
- wherein y is a numerical value ranging from approximately 0.1 to approximately 0.30;
- wherein z is a numerical value ranging from approximately 0.4 to approximately 0.65;
- and
- wherein Lix is included in transition metal layers of the structure.
A method for manufacturing a single phase cathodic material for use in an electrochemical cell represented by the formula:
- Li[LixCoyA1−x−y]O2;
- wherein A=[MnzNi1−z];
- wherein x is a numerical value ranging from greater than 0.0 to approximately 0.16;
- wherein y is a numerical value ranging from approximately 0.1 to approximately 0.30;
- wherein z is a numerical value ranging from approximately 0.4 to approximately 0.65;
- and
- wherein Lix is included in transition metal layers of the structure, and/or wherein the material comprises a layered R-3m crystal structure having a c/a ratio greater than approximately 1.012, the method comprising the steps of:
- providing a precursor with a mixture of Ni, Mn and Co cations;
- mixing the precursor with a stoichiometric amount of a Li source;
- and
- reacting the resulting mixture at an elevated temperature.
A method for manufacturing a single phase cathodic material for use in an electrochemical cell represented by the formula:
- Li[LixCoyA1−x−y]O2;
- wherein A=[MnzNi1−z];
- wherein x is a numerical value ranging from greater than 0.0 to approximately 0.16;
- wherein y is a numerical value ranging from approximately 0.1 to approximately 0.30;
- wherein z is a numerical value ranging from approximately 0.4 to approximately 0.65;
- and
- wherein Lix is included in transition metal layers of the structure, and/or wherein the material comprises a layered R-3m crystal structure having a c/a ratio greater than approximately 1.012, the method comprising the steps of:
- mixing powders of metal oxides, wherein the metal oxides includes Ni, Mn, and Co, and Li;
- ball milling the mixture to produce a precursor oxide;
- and
- heating the precursor oxide.
Dependencies are inferred from the claim text.