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
Method for producing positive electrode active material for nonaqueous electrolyte secondary batteries, positive electrode active material for nonaqueous electrolyte secondary batteries, and nonaqueous electrolyte secondary battery using same
US2015194673A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2015194673-A1 |
| Application number | US-201314420082-A |
| Country | US |
| Kind code | A1 |
| Filing date | Aug 13, 2013 |
| Priority date | Aug 28, 2012 |
| Publication date | Jul 9, 2015 |
| Grant date | — |
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Abstract
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A method for manufacturing a positive active material for a nonaqueous electrolyte secondary battery having both thermal stability and charge-discharge capacity at a high level as well as excellent cycle characteristics. The method for manufacturing a positive active material for a nonaqueous electrolyte secondary battery includes: a step of adding a niobium salt solution and an acid simultaneously to a slurry of a nickel-containing hydroxide, and controlling the pH of the slurry at between 7 and 11 on a 25° C. basis to obtain a nickel-containing hydroxide coated with a niobium compound; a step of mixing the nickel-containing hydroxide coated with the niobium compound with a lithium compound to obtain a lithium mixture; and a step of firing the lithium mixture in an oxidizing atmosphere at 700° C. to 830° C. to obtain a lithium-transition metal composite oxide.
First claim
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1 . A method for manufacturing a positive active material for a nonaqueous electrolyte secondary battery, with the material being formed of a lithium-transition metal composite oxide which is represented by a General Formula Li d Ni 1-a-b-c Co a M b Nb c O 2 (where M is at least one element selected from Mn, V, Mg, Ti and Al, and 0.05≦a≦0.35, 0≦b≦0.10, 0.006≦c≦0.06, and 0.95≦d≦1.20 are established) and which is composed of particles with a polycrystalline structure, the method comprising: a…
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- H01M4/525Primary
Electricity · mapped topic
Electricity · mapped topic
Cross-Sectional Technologies · mapped topic
Electricity · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US2015194673A1 cover?
- A method for manufacturing a positive active material for a nonaqueous electrolyte secondary battery having both thermal stability and charge-discharge capacity at a high level as well as excellent cycle characteristics. The method for manufacturing a positive active material for a nonaqueous electrolyte secondary battery includes: a step of adding a niobium salt solution and an acid simultaneo…
- Who is the assignee on this patent?
- Sumitomo Metal Mining Co
- 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 Jul 09 2015 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).