Layered oxide materials for batteries
US-2016181607-A1 · Jun 23, 2016 · US
Li-substituted layered spinel cathode materials for sodium ion batteries
US11165064B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11165064-B2 |
| Application number | US-201916594235-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 7, 2019 |
| Priority date | Oct 7, 2019 |
| Publication date | Nov 2, 2021 |
| Grant date | Nov 2, 2021 |
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Abstract
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Systems, methods, and compositions are disclosed for a Li-substituted layered-tunneled O3/spinel Na(NixFeyMnz)O2 cathode material, Na0.87Li0.25Ni0.4Fe0.2Mn0.4O2+∂ (LS-NFM) for enhanced sodium ion storage and cycling stability. The LS-NFM electrode is prepared by adjusting the stoichiometric ratio of the Na ion over the sum of Li and transition metal ions below 1. The Rietveld refinement of XRD data indicates that the cathode is composed of 94% layered and 6% spinel components. When cycled at a high current density of 100 mA g−1, LS-NFM cathode exhibited a first-cycle Coulombic efficiency of 88% and reversible discharge capacity of 107 mAh g−1 after 50 cycles with the capacity retention of 95%.
First claim
Opening claim text (preview).
What is claimed is: 1. A cathode material for a Sodium Ion Battery (SIB) comprising: Na 0.87 Li 0.25 Ni 0.4 Fe 0.2 Mn 0.4 O 2+∂ (LS-NFM) wherein 0≤∂≤0.2 and wherein the cathode material comprises a dominant layered phase and a secondary spinel phase. 2. The cathode material of claim 1 further comprising: 94% (by weight) layered components in the dominant layered phase; and 6% (by weight) spinel components in the secondary spinel phase. 3. The cathode material of claim 1 further comprising: a first-cycle Coulombic efficiency of 88%; and a reversible discharge capacity of 107 mAh g −1 after 50 cycles with the capacity retention of 95% when cycled at a high current density of 100 mA g −1 .
Assignees
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Classifications
Energy storage using batteries · CPC title
Positive electrodes · CPC title
- H01M4/525Primary
of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy · CPC title
Electric properties · CPC title
obtained by SEM · CPC title
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- What does patent US11165064B2 cover?
- Systems, methods, and compositions are disclosed for a Li-substituted layered-tunneled O3/spinel Na(NixFeyMnz)O2 cathode material, Na0.87Li0.25Ni0.4Fe0.2Mn0.4O2+∂ (LS-NFM) for enhanced sodium ion storage and cycling stability. The LS-NFM electrode is prepared by adjusting the stoichiometric ratio of the Na ion over the sum of Li and transition metal ions below 1. The Rietveld refinement of XRD …
- Who is the assignee on this patent?
- Univ Boise State
- What technology area does this patent fall under?
- Primary CPC classification H01M4/525. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Nov 02 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).