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 for nonaqueous electrolyte secondary battery and nonaqueous electrolyte secondary battery that uses the positive electrode
US2016013478A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016013478-A1 |
| Application number | US-201414654142-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jan 23, 2014 |
| Priority date | Feb 28, 2013 |
| Publication date | Jan 14, 2016 |
| Grant date | — |
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Abstract
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A positive electrode for a nonaqueous electrolyte secondary battery that does not undergo a decrease in discharge capacity in low-temperature discharge during charge and discharge after the battery is left standing at high temperature in a charged state, for example. The positive electrode for a nonaqueous electrolyte secondary battery includes a positive electrode active material. The positive electrode active material includes a mixture of lithium nickel cobalt manganate and lithium cobaltate having a compound adhered to part of a surface thereof, the compound containing fluorine and at least one selected from zirconium, magnesium, titanium, aluminum, and a rare earth element; and a ratio of the lithium nickel cobalt manganate relative to a total amount of the positive electrode active material is 1% by mass or more and less than 70% by mass.
First claim
Opening claim text (preview).
1 . A positive electrode for a nonaqueous electrolyte secondary battery, the positive electrode comprising a positive electrode active material, wherein the positive electrode active material includes a mixture of lithium nickel cobalt manganate and lithium cobaltate having a compound adhered to part of a surface thereof, the compound containing fluorine and at least one selected from zirconium, magnesium, titanium, aluminum, and a rare earth element; and a ratio of the lithium nickel cobalt manganate relative to a total amount of the positive electrode active material is 3% by mass or more and less than 50% by mass. 2 . The positive electrode for a nonaqueous electrolyte secondary battery according to claim 1 , wherein the ratio of the lithium nickel cobalt manganate relative to the total amount of the positive electrode active material is 5% by mass or more and 40% by mass or less. 3 . The positive electrode for a nonaqueous electrolyte secondary battery according to claim 1 , wherein the ratio of the lithium nickel cobalt manganate relative to the total amount of the positive electrode active material is 5% by mass or more and 30% by mass or less. 4 . The positive electrode for a nonaqueous electrolyte secondary battery according to claim 1 , wherein the compound contains fluorine and a rare earth element. 5 . The positive electrode for a nonaqueous electrolyte secondary battery according to claim 1 , wherein the compound contains fluorine and at least one element selected from erbium, samarium, neodymium, and lanthanum. 6 . The positive electrode for a nonaqueous electrolyte secondary battery according to claim 1 , wherein the compound contains fluorine and zirconium. 7 . The positive electrode for a nonaqueous electrolyte secondary battery according to claim 6 , wherein the compound containing fluorine and zirconium contains ZrF 4 or Li 2 ZrF 6 . 8 . A nonaqueous electrolyte secondary battery comprising the positive electrode for a nonaqueous electrolyte secondary battery according to claim 1 , a negative electrode, and an electrolyte.
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Classifications
of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy · CPC title
of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy (H01M4/505, H01M4/525 take precedence) · CPC title
of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy · CPC title
Positive electrodes · CPC title
containing halogen atoms, e.g. LiCoOxFy · CPC title
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- What does patent US2016013478A1 cover?
- A positive electrode for a nonaqueous electrolyte secondary battery that does not undergo a decrease in discharge capacity in low-temperature discharge during charge and discharge after the battery is left standing at high temperature in a charged state, for example. The positive electrode for a nonaqueous electrolyte secondary battery includes a positive electrode active material. The positive…
- Who is the assignee on this patent?
- Sanyo Electric Co
- What technology area does this patent fall under?
- Primary CPC classification H01M4/366. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Jan 14 2016 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).