Electrode assembly, method for producing same, and secondary battery including same
US-2019355952-A1 · Nov 21, 2019 · US
Electrode assembly for lithium secondary battery, and lithium secondary battery comprising same
US2023290958A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2023290958-A1 |
| Application number | US-202218014019-A |
| Country | US |
| Kind code | A1 |
| Filing date | Feb 21, 2022 |
| Priority date | Mar 30, 2021 |
| Publication date | Sep 14, 2023 |
| Grant date | — |
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Abstract
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The present invention relates to an electrode assembly for a lithium secondary battery, and a lithium secondary battery comprising same, the electrode assembly comprising a current collector, an anode comprising an anode active material layer located on the current collector and a functional layer integrated with the anode active material layer; and a cathode, wherein the functional layer includes at least one inorganic layer and the peel strength of the functional layer is 0.2 N/m or greater.
First claim
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1 . An electrode assembly for a lithium secondary battery, consisting of: a current collector, an anode active material layer positioned on the current collector, and a functional layer integrated with the anode active material layer; and a cathode, wherein the functional layer comprises at least one inorganic layer, and a peel strength of the functional layer is 0.2 N/m or greater. 2 . The electrode assembly for a lithium secondary battery of claim 1 , wherein the peel strength of the functional layer is 0.2 N/m to 2.0 N/m. 3 . The electrode assembly for a lithium secondary battery of claim 1 , wherein the inorganic layer is a dense layer. 4 . The electrode assembly for a lithium secondary battery of claim 1 , wherein the inorganic layer has a thickness of 1 μm to 25 μm. 5 . The electrode assembly for a lithium secondary battery of claim 1 , wherein the inorganic layer comprises alumina (Al 2 O 3 ), boehmite (aluminum oxide hydroxide), zirconia, titania (TiO 2 ), and silica (SiO 2 ), or combinations thereof. 6 . The electrode assembly for a lithium secondary battery of claim 1 , wherein the functional layer comprises at least one organic layer comprising a polymer. 7 . The electrode assembly for a lithium secondary battery of claim 6 , wherein the organic layer has a three-dimensional network structure. 8 . The electrode assembly for a lithium secondary battery of claim 6 , wherein the organic layer is positioned to contact the anode active material layer. 9 . The electrode assembly for a lithium secondary battery of claim 6 , wherein the organic layer comprises polyolefin-based, polyester, polyamide, polyimide, polyamideimide, polyetherimide, polyacrylonitrile, polyvinylidene fluoride, polyvinyl chloride, polyvinylidene chloride, polyethylene glycol derivative, polyoxide, polyvinyl acetate, polystyrene, polyvinylpyrrolidone, a copolymer thereof, or a combination thereof. 10 . The electrode assembly for a lithium secondary battery of claim 6 , wherein the organic layer has a thickness of 1 μm to 20 μm. 11 . The electrode assembly for a lithium secondary battery of claim 1 , wherein the functional layer further comprises an organic layer, and the inorganic layer is positioned to contact the anode active material layer. 12 . The electrode assembly for a lithium secondary battery of claim 11 , wherein the functional layer has a peel strength of 0.2 N/m or greater. 13 . The electrode assembly of claim 12 , wherein the peel strength of the functional layer is 0.2 N/m to 2.0 N/m. 14 . The electrode assembly of claim 1 , wherein an interface between the anode active material layer and the functional layer has a dense form. 15 . A lithium secondary battery, comprising: an electrode assembly of claim 1 ; and an electrolyte.
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Negative electrodes · CPC title
Physical characteristics, e.g. porosity, surface area · CPC title
Tensile strength · CPC title
Separators, membranes or diaphragms characterised by their combination with electrodes · CPC title
comprising a non-fibrous layer and a fibrous layer superimposed on one another · CPC title
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- What does patent US2023290958A1 cover?
- The present invention relates to an electrode assembly for a lithium secondary battery, and a lithium secondary battery comprising same, the electrode assembly comprising a current collector, an anode comprising an anode active material layer located on the current collector and a functional layer integrated with the anode active material layer; and a cathode, wherein the functional layer inclu…
- Who is the assignee on this patent?
- Samsung Sdi Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/628. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Sep 14 2023 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).