Lithium-ion secondary battery, electrode for the secondary battery, and electrolytic copper foil for electrode for the secondary battery
US-9603245-B2 · Mar 21, 2017 · US
Electrolytic copper foil for lithium secondary battery and lithium secondary battery comprising the same
US10418635B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10418635-B2 |
| Application number | US-201615315774-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 11, 2016 |
| Priority date | Jun 18, 2015 |
| Publication date | Sep 17, 2019 |
| Grant date | Sep 17, 2019 |
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- Title
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- Abstract
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- First independent claim
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Abstract
Official abstract text for this publication.
An electrolytic copper foil for a lithium secondary battery, which is applied as a negative electrode current collector of a lithium secondary battery, wherein after a thermal treatment at 300° C. for 30 minutes, the electrolytic copper foil for a lithium secondary battery has an elongation of 5% to 30%.
First claim
Opening claim text (preview).
What is claimed is: 1. An electrolytic copper foil for a lithium secondary battery, which is applied as a negative electrode current collector of a lithium secondary battery, wherein after a thermal treatment at 300° C. for 30 minutes, the electrolytic copper foil for a lithium secondary battery would have an elongation of 5% to 30%, a breaking strength of 19 kgf/mm 2 to 26 kgf/mm 2 , and a breaking strength ratio ((breaking strength/yield strength)×100) of 110% to 165%. 2. The electrolytic copper foil for a lithium secondary battery according to claim 1 , wherein the electrolytic copper foil for a lithium secondary battery has an anti-corrosion layer containing at least one of chrome (Cr), silane compound and nitride compound, on both surfaces thereof. 3. The electrolytic copper foil for a lithium secondary battery according to claim 1 , wherein the electrolytic copper foil for a lithium secondary battery has a thickness of 3 μm to 30 μm. 4. The electrolytic copper foil for a lithium secondary battery according to claim 1 , wherein both surfaces of the electrolytic copper foil for a lithium secondary battery have a surface roughness of 3.5 μm or less on the basis of Rz. 5. A lithium secondary battery, to which the electrolytic copper foil for a lithium secondary battery according to claim 1 is applied as a negative electrode current collector.
Assignees
Inventors
Classifications
Selection of materials · CPC title
- H01M10/052Primary
Li-accumulators · CPC title
- H01M4/661Primary
Metal or alloys, e.g. alloy coatings (H01M4/669 take precedence) · CPC title
in the form of layers, e.g. coatings · CPC title
of copper or alloys based thereon · CPC title
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Frequently asked questions
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- What does patent US10418635B2 cover?
- An electrolytic copper foil for a lithium secondary battery, which is applied as a negative electrode current collector of a lithium secondary battery, wherein after a thermal treatment at 300° C. for 30 minutes, the electrolytic copper foil for a lithium secondary battery has an elongation of 5% to 30%.
- Who is the assignee on this patent?
- Ls Mtron Ltd, Kcf Tech Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M10/052. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Sep 17 2019 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).