Positive electrode active material and preparation method thereof, positive electrode plate, secondary battery, battery module, battery pack, and electric apparatus
US-2024429384-A1 · Dec 26, 2024 · US
Positive electrode active material for potassium ion secondary cell
US2019067692A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2019067692-A1 |
| Application number | US-201615780472-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 7, 2016 |
| Priority date | Dec 7, 2015 |
| Publication date | Feb 28, 2019 |
| Grant date | — |
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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 M 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
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1 . 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, iron, or manganese, n is 1.63 to 3.5, and m is 1.5 to 2.5. 2 . The potassium ion secondary battery positive electrode active material according to claim 1 , wherein the potassium compound has an orthorhombic structure and/or monoclinic structure. 3 . The potassium ion secondary battery positive electrode active material 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 potassium ion secondary battery positive electrode active material 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 . A potassium ion secondary battery positive electrode comprising the potassium ion secondary battery positive electrode active material according to claim 1 . 7 . The potassium ion secondary battery positive electrode according to claim 6 , further comprising a conductive material. 8 . A potassium ion secondary battery comprising the potassium ion secondary battery positive electrode according to claim 6 . 9 . 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. 10 . A potassium ion secondary battery positive electrode active material according to claim 9 , wherein the potassium compound has an orthorhombic structure and/or monoclinic structure. 11 . A potassium ion secondary battery positive electrode active material according to claim 9 , wherein the potassium compound has a mean particle diameter of 0.2 to 50 μm. 12 . A method for producing the potassium ion secondary battery positive electrode active material according to claim 9 , the method comprising a heating step of heating a mixture containing potassium, oxygen, and copper or iron. 13 . The method according to claim 12 , wherein the heating temperature in the heating step is 500 to 1500° C. 14 . A potassium ion secondary battery positive electrode comprising the potassium ion secondary battery positive electrode active material according to claim 9 . 15 . The potassium ion secondary battery positive electrode according to claim 14 , further comprising a conductive material. 16 . A potassium ion secondary battery comprising the potassium ion secondary battery positive electrode according to claim 14 .
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Classifications
by d-values or two theta-values, e.g. as X-ray diagram · CPC title
Positive electrodes · CPC title
containing one alkali metal · CPC title
Electric properties · CPC title
Compounds containing copper, with or without oxygen or hydrogen, and containing two or more other elements · CPC title
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- What does patent US2019067692A1 cover?
- By using a potassium ion secondary battery positive electrode active material comprising a potassium compound represented by general formula (1): K n M 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 s…
- 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 Thu Feb 28 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).