Positive electrode active material and preparation method thereof, secondary battery, battery module, battery pack and electrical device
US-2024387819-A1 · Nov 21, 2024 · US
Positive electrode and lithium battery including the same
US8999575B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8999575-B2 |
| Application number | US-201113101645-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 5, 2011 |
| Priority date | Jul 20, 2010 |
| Publication date | Apr 7, 2015 |
| Grant date | Apr 7, 2015 |
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Abstract
Official abstract text for this publication.
Disclosed is a positive electrode and a lithium battery including the positive electrode. The positive electrode includes a current collector, a first layer irreversibly deintercalating lithium ions, and a second layer allowing reversible intercalation and deintercalation of lithium ions. In one embodiment, the first layer further comprises a first sublayer and a second sublayer, in which the first sublayer is interposed between the current collector and the second sublayer. The first sublayer comprises a first active material represented by Formula 1 Li 2 Mo 1-n R 1 n O 3 , and the second sublayer comprises a second active material represented by Formula 2 Li 2 Ni 1-m R 2 m O 2 . In Formula 1, 0≦n<1; and R 1 is selected from the group consisting of manganese (Mn), iron (Fe), cobalt (Co), copper (Cu), zinc (Zn), magnesium (Mg), nickel (Ni), and combinations of at least two of the foregoing elements. In Formula 2, 0≦m<1; and R 2 is selected from the group consisting of Mn, Fe, Co, Cu, Zn, Mg, molybdenum (Mo), and combinations of at least two of the foregoing elements.
First claim
Opening claim text (preview).
What is claimed is: 1. A positive electrode comprising: a current collector; a first layer irreversibly deintercalating lithium ions; and a second layer allowing reversible intercalation and deintercalation of lithium ions, wherein the first layer is interposed between the current collector and the second layer, wherein a thickness ratio of the first layer to the second layer is from about 5:95 to about 30:70. 2. The positive electrode of claim 1 , w…
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Electricity · mapped topic
Electricity · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US8999575B2 cover?
- Disclosed is a positive electrode and a lithium battery including the positive electrode. The positive electrode includes a current collector, a first layer irreversibly deintercalating lithium ions, and a second layer allowing reversible intercalation and deintercalation of lithium ions. In one embodiment, the first layer further comprises a first sublayer and a second sublayer, in which the f…
- Who is the assignee on this patent?
- Lee Soon-Rewl, Choi Ick-Kyu, Kim Young-Ki, and 5 more
- What technology area does this patent fall under?
- Primary CPC classification H01M4/131. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Apr 07 2015 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).