All-solid state secondary battery and method of manufacturing the same
US-2020373565-A1 · Nov 26, 2020 · US
Nonaqueous electrolyte secondary battery
US12489117B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12489117-B2 |
| Application number | US-202217578461-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 19, 2022 |
| Priority date | Jan 21, 2021 |
| Publication date | Dec 2, 2025 |
| Grant date | Dec 2, 2025 |
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- Title
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Abstract
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To provide a nonaqueous electrolyte secondary battery which enables to suppress durability deterioration, improve energy density, and further suppress a decrease in the function of the nonaqueous electrolyte secondary battery cell. A nonaqueous electrolyte secondary battery, comprising: a positive electrode; and a negative electrode, wherein the negative electrode has: a current collector comprising a porous metal body; and a negative electrode material disposed in pores of the porous metal body, the negative electrode material comprises a negative electrode active material comprising a silicon-based material, a skeleton-forming agent comprising a silicate having a siloxane bond, a conductive auxiliary, and a binder, and a content of the skeleton-forming agent in an outside in a surface direction of the negative electrode is higher than a content of the skeleton-forming agent in an inside in the surface direction of the negative electrode.
First claim
Opening claim text (preview).
What is claimed is: 1 . A nonaqueous electrolyte secondary battery, comprising: a positive electrode; and a negative electrode, the negative electrode comprising: a current collector comprising a porous metal body; and a negative electrode material disposed in pores of the porous metal body, the negative electrode material comprising: a negative electrode active material comprising a silicon-based material; a skeleton-forming agent comprising a silicate having a siloxane bond; a conductive auxiliary; and a binder, the negative electrode having an outer portion and an inner portion in an in-plane direction, the outer portion having a skeleton-forming agent content higher than that of the inner portion, wherein the positive electrode has a buffer layer which is more easily deformable by external force as compared with other regions of the positive electrode in a region opposed to the negative electrode, and wherein the negative electrode has a non-deforming layer which is less easily deformable by external force as compared with other regions of the negative electrode in a region opposed to the positive electrode. 2 . The nonaqueous electrolyte secondary battery according to claim 1 , wherein the buffer layer comprises at least one of a carbon-based material and an organic conductive polymer. 3 . The nonaqueous electrolyte secondary battery according to claim 1 , wherein the non-deforming layer is an active material layer comprising at least one of a carbon-based material and lithium titanate. 4 . The nonaqueous electrolyte secondary battery according to claim 1 , wherein the skeleton-forming agent comprises a silicate represented by the following general formula (1): [Chem. 1] A 2 O· n SiO 2 formula (1) wherein A represents an alkali metal and n is 1.6 or more and 3.9 or less. 5 . The nonaqueous electrolyte secondary battery according to claim 1 , wherein the porous metal body is a foamed metal body.
Assignees
Inventors
Classifications
Selection of inactive substances as ingredients for active masses, e.g. binders, fillers · CPC title
Electrodes based on metals, Si or alloys · CPC title
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
- H01M4/808Primary
Foamed, spongy materials · CPC title
Metal or alloys, e.g. alloy coatings (H01M4/669 take precedence) · CPC title
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Frequently asked questions
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- What does patent US12489117B2 cover?
- To provide a nonaqueous electrolyte secondary battery which enables to suppress durability deterioration, improve energy density, and further suppress a decrease in the function of the nonaqueous electrolyte secondary battery cell. A nonaqueous electrolyte secondary battery, comprising: a positive electrode; and a negative electrode, wherein the negative electrode has: a current collector compr…
- Who is the assignee on this patent?
- Honda Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/808. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Dec 02 2025 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 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).