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
Non-aqueous electrolyte secondary battery comprising surface-coated positive electrode material
US10141565B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10141565-B2 |
| Application number | US-201214383640-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 9, 2012 |
| Priority date | Mar 9, 2012 |
| Publication date | Nov 27, 2018 |
| Grant date | Nov 27, 2018 |
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- Title
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Abstract
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Provided is a non-aqueous electrolyte secondary battery excellent in durability, the non-aqueous electrolyte secondary battery including a positive electrode active material, the surface of which is coated with a film formed of an inorganic solid electrolyte, wherein a change in volume of the positive electrode active material during charge and discharge is reduced to prevent deterioration of the film with which the surface of the positive electrode active material is coated. In a non-aqueous electrolyte secondary battery including a positive electrode active material, the surface of which is coated with a film formed of an inorganic solid electrolyte, the positive electrode active material is a lithium-containing composite oxide having a spinel structure, and contains at least one of Ti and Mg as an additional element.
First claim
Opening claim text (preview).
The invention claimed is: 1. A non-aqueous electrolyte secondary battery comprising a non-aqueous electrolyte solution and a positive electrode provided with a positive electrode mixture layer, wherein the positive electrode mixture layer includes positive electrode active material particles, a surface of each of the positive electrode active material particles is coated with a film formed of an inorganic solid electrolyte, and a positive electrode active material of the positive electrode active material particles is a lithium-containing composite oxide having a spinel structure, is represented by the compositional formula: LiNi 0.5 Mn 1.5 O 4 , performs charge and discharge at an electric potential of 4.5 V or more with respect to the lithium metal, and contains at least one of Ti and Mg as a dopant. 2. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the dopant is Ti.
Assignees
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Classifications
Safety or regulating additives or arrangements in electrodes, separators or electrolyte (H01M10/4242 takes precedence) · CPC title
Li-accumulators · CPC title
Solid materials · 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
Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx · CPC title
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- What does patent US10141565B2 cover?
- Provided is a non-aqueous electrolyte secondary battery excellent in durability, the non-aqueous electrolyte secondary battery including a positive electrode active material, the surface of which is coated with a film formed of an inorganic solid electrolyte, wherein a change in volume of the positive electrode active material during charge and discharge is reduced to prevent deterioration of t…
- Who is the assignee on this patent?
- Abe Takeshi, Takebayashi Yoshitomo, Toyoshima Ippei, and 1 more
- 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 Tue Nov 27 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).