Layered Sodium Metal Oxides For Na-ion Batteries
AssigneeUniversity Court of the University of St Andrews
InventorsAnthony Robert Armstrong, Philip Adam Maughan
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Abstract
A composition having the general formula: NaaMnbFecTidMeO2, wherein: M comprises one or more elements selected from the group consisting of aluminium, magnesium, zinc, copper, silicon, and zirconium; and wherein: 0.5<a≤1; 0.1≤b≤0.7; 0.1≤c≤0.7; 0<d≤0.3; and 0<e≤0.5, and wherein the composition is a layered sodium metal oxide material having at least a first phase and a second phase, wherein each phase is different and independently comprises one or more P2-type structures, one or more O3-type structures or one or more P3-type structures. Also described are methods of synthesizing layered sodium metal oxide materials as well as electrodes and energy storage devices including such compositions.
Claims22
A composition having the general formula:
- NaaMnbFecTidMeO2,
- wherein:
- M comprises one or more elements selected from the group consisting of aluminium, magnesium, zinc, copper, silicon, and zirconium;
- and
- wherein:
- 0.5<a≤1;
- 0.1≤b≤0.7;
- 0.1≤c≤0.7;
- 0<d≤0.3;
- and
- 0<e≤0.5,
- wherein:
- the composition is a layered sodium metal oxide material having at least a first phase and a second phase, wherein each phase is different and independently comprises one or more P2-type structures, one or more O3-type structures, or one or more P3-type structures.
Dependencies are inferred from the claim text.