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
Cathode active material coated with fluorine-doped lithium metal manganese oxide and lithium-ion secondary battery comprising the same
US2016329563A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016329563-A1 |
| Application number | US-201514842752-A |
| Country | US |
| Kind code | A1 |
| Filing date | Sep 1, 2015 |
| Priority date | May 4, 2015 |
| Publication date | Nov 10, 2016 |
| Grant date | — |
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Abstract
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Provided are a cathode active material coated with a fluorine-doped spinel-structured lithium metal manganese oxide, a lithium secondary battery including the same, and a method for preparing the same. The cathode active material has improved chemical stability and provides improved charge/discharge characteristics at elevated temperature (55-60° C.) and high rate. The cathode active material allows lithium ions to pass through the coating layer with ease and is chemically stable, and thus may be used effectively as a cathode active material for a high-power lithium secondary battery.
First claim
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What is claimed is: 1 . A cathode active material having a core-shell structure, wherein the shell is a coating layer of fluorine-doped spinel-structured lithium metal manganese oxide represented by the following Chemical Formula 1: Li 1 M x Mn 2-x O 4-n F n [Chemical Formula 1] wherein x is 1 /( 4 −z), z is an oxidation number of M, and n is a real number satisfying 0<n<0.3. 2 . The cathode active material according to claim 1 , wherein the core is a spinel-structured lithium manganese oxide (LMO). 3 . The cathode active material according to claim 1 , wherein the coating layer of fluorine-doped spinel-structured lithium metal manganese oxide and the core are used at a weight ratio of 1:20-200. 4 . The cathode active material according to claim 1 , wherein the coating layer of fluorine-doped spinel-structured lithium metal manganese oxide has a thickness of 1 nm-1 μm. 5 . A positive electrode for a lithium ion secondary battery, the positive electrode comprising the cathode active material as defined in claim 1 . 6 . A lithium secondary battery comprising the cathode active material as defined in claim 1 .
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- What does patent US2016329563A1 cover?
- Provided are a cathode active material coated with a fluorine-doped spinel-structured lithium metal manganese oxide, a lithium secondary battery including the same, and a method for preparing the same. The cathode active material has improved chemical stability and provides improved charge/discharge characteristics at elevated temperature (55-60° C.) and high rate. The cathode active material a…
- Who is the assignee on this patent?
- Korea Inst Sci & Tech
- What technology area does this patent fall under?
- Primary CPC classification H01M4/505. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Nov 10 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).