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 for overcharge protection in secondary lithium batteries
US9991566B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9991566-B2 |
| Application number | US-201213664210-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 30, 2012 |
| Priority date | Nov 3, 2011 |
| Publication date | Jun 5, 2018 |
| Grant date | Jun 5, 2018 |
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- Title
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Abstract
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Provided herein is an electrode active material comprising a lithium metal oxide and an overcharge protection additive having an operating voltage higher than the operating voltage of the lithium metal oxide.
First claim
Opening claim text (preview).
The invention claimed is: 1. A positive electrode comprising a physical mixture of a first electrode active material and a second electrode active material coated onto a collector of the positive electrode; and wherein the first electrode active material comprises a lithium metal oxide, and wherein the second electrode active material comprises an overcharge protection additive having an operating voltage higher than the operating voltage of the lithium metal oxide, wherein the overcharge protection additive is a Li-rich layered oxide, a lithium oxide spinel, an olivine phosphate, and combinations thereof. 2. A positive electrode comprising a physical mixture of a first electrode active material and a second electrode active material coated onto a collector of the positive electrode; and wherein the first electrode active material comprises a lithium metal oxide, and wherein the second electrode active material comprises an overcharge protection additive having an operating voltage higher than the operating voltage of the lithium metal oxide, wherein the overcharge protection additive has the formula xLi 2 M 1 O 3 (1−x)LiM 2 O 2 , wherein: M 1 is Mn, Ti, Zr, and combinations thereof; M 2 is Mn, Ni, Co, Cr, or combinations thereof, and x is greater than 0 and smaller than 1. 3. A lithium ion battery comprising a positive electrode comprising a positive electrode active material mixture, a negative electrode comprising a negative electrode active material, and an electrolyte, the positive electrode active material mixture comprises a physical mixture of a first electrode active material and a second electrode active material, wherein the first electrode active material comprises a lithium metal oxide, and wherein the second electrode active material comprises an overcharge protection additive having an operating voltage higher than an operating voltage of the lithium metal oxide, wherein the overcharge protection additive is a Li-rich layered oxide, a lithium oxide spinel, an olivine phosphate, and combinations thereof.
Assignees
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Classifications
against overcharge · CPC title
of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy · CPC title
- H01M4/364Primary
as mixtures · 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
of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy (H01M4/505, H01M4/525 take precedence) · CPC title
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- What does patent US9991566B2 cover?
- Provided herein is an electrode active material comprising a lithium metal oxide and an overcharge protection additive having an operating voltage higher than the operating voltage of the lithium metal oxide.
- Who is the assignee on this patent?
- Johnson Controls Tech Llc, Johnson Controls Tech Co
- What technology area does this patent fall under?
- Primary CPC classification H01M4/364. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jun 05 2018 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).