Titanium-niobium composite oxide-based electrode active material and lithium secondary battery using the same
US-2015243979-A1 · Aug 27, 2015 · US
Positive electrode active material for potassium ion secondary cell
US10862120B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10862120-B2 |
| Application number | US-201615780472-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 7, 2016 |
| Priority date | Dec 7, 2015 |
| Publication date | Dec 8, 2020 |
| Grant date | Dec 8, 2020 |
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Abstract
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By using a potassium ion secondary battery positive electrode active material comprising a potassium compound represented by general formula (1): K n MO m , wherein M is copper or iron, n is 0.5 to 3.5, and m is 1.5 to 2.5, provided is a potassium ion secondary battery positive electrode active material having higher theoretical discharge capacity and higher effective capacity than a potassium secondary battery using Prussian blue as a positive electrode active material.
First claim
Opening claim text (preview).
The invention claimed is: 1. A potassium ion secondary battery comprising a positive electrode, the positive electrode containing an active material that includes a potassium compound represented by general formula (1): K n MO m , wherein M is copper, iron, or manganese, n is 1.63 to 3.5, and m is 1.5 to 2.5. 2. The potassium ion secondary battery according to claim 1 , wherein the potassium compound has an orthorhombic structure and/or monoclinic structure. 3. The potassium ion secondary battery according to claim 1 , wherein the potassium compound has a mean particle diameter of 0.2 to 50 μm. 4. A method for producing the active material in the potassium ion secondary battery according to claim 1 , the method comprising a heating step of heating a mixture containing potassium, oxygen, and copper, iron, or manganese. 5. The method according to claim 4 , wherein the heating temperature in the heating step is 500 to 1500° C. 6. The potassium ion secondary battery according to claim 1 , wherein the electrode further comprises a conductive material. 7. A potassium ion secondary battery comprising a positive electrode, the positive electrode containing an active material that includes a potassium compound represented by general formula (1): K n MO m , wherein M is copper or iron, n is 0.5 to 3.5, and m is 1.5 to 2.5. 8. A The potassium ion secondary battery according to claim 7 , wherein the potassium compound has an orthorhombic structure and/or monoclinic structure. 9. The potassium ion secondary battery according to claim 7 , wherein the potassium compound has a mean particle diameter of 0.2 to 50 μm. 10. A method for producing the active material in the potassium ion secondary battery according to claim 7 , the method comprising a heating step of heating a mixture containing potassium, oxygen, and copper or iron. 11. The method according to claim 10 , wherein the heating temperature in the heating step is 500 to 1500° C. 12. The potassium ion secondary battery according to claim 7 , wherein the electrode further comprises a conductive material.
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Classifications
Submicrometer sized, i.e. from 0.1-1 micrometer · 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
Compounds of iron · CPC title
oxides · CPC title
Compounds of copper · CPC title
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- What does patent US10862120B2 cover?
- By using a potassium ion secondary battery positive electrode active material comprising a potassium compound represented by general formula (1): K n MO m , wherein M is copper or iron, n is 0.5 to 3.5, and m is 1.5 to 2.5, provided is a potassium ion secondary battery positive electrode active material having higher theoretical discharge capacity and higher effective capacity than a potassium …
- Who is the assignee on this patent?
- Aist
- 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 Dec 08 2020 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).