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Lithium Ion Secondary Battery Element, and Lithium Ion Secondary Battery
US2020176809A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2020176809-A1 |
| Application number | US-201816625978-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jun 25, 2018 |
| Priority date | Jul 7, 2017 |
| Publication date | Jun 4, 2020 |
| Grant date | — |
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- Title
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Abstract
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Present disclosure provides a lithium ion secondary battery element in which a positive electrode including a positive electrode active material layer formed by applying a positive electrode active material mixture, a separator, and a negative electrode including a negative electrode active material layer formed by applying a negative electrode active material mixture are stacked.
First claim
Opening claim text (preview).
1 . A lithium ion secondary battery element comprising a positive electrode, a separator, and a negative electrode that are stacked, wherein: the positive electrode includes a positive electrode active material layer formed by applying a positive electrode active material mixture; the negative electrode includes a negative electrode active material layer formed by applying a negative electrode active material mixture; the separator is a uniaxially stretched film of polyolefin and has an air permeability of less than or equal to 100 seconds/100 milliliters; and after a lithium ion secondary battery including the lithium ion secondary battery element is charged and discharged once, a total of a thickness of the separator and a thickness of the negative electrode active material layer formed on one surface of the negative electrode is less than or equal to 50 micrometers. 2 . The lithium ion secondary battery element according to claim 1 , wherein the uniaxially stretched film of the polyolefin is crosslinked. 3 . The lithium ion secondary battery element according to claim 1 , wherein each of the positive electrode, the separator, and the negative electrode has an independent sheet shape. 4 . A lithium ion secondary battery comprising, in a package, a power generating element including the lithium ion secondary battery element according to claim 1 , and an electrolyte solution.
Assignees
Inventors
Classifications
Negative electrodes · CPC title
- H01M10/0525Primary
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
Positive electrodes · CPC title
Electricity · mapped topic
as mixtures · CPC title
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Frequently asked questions
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- What does patent US2020176809A1 cover?
- Present disclosure provides a lithium ion secondary battery element in which a positive electrode including a positive electrode active material layer formed by applying a positive electrode active material mixture, a separator, and a negative electrode including a negative electrode active material layer formed by applying a negative electrode active material mixture are stacked.
- Who is the assignee on this patent?
- Envision Aesc Japan Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M10/0525. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Jun 04 2020 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).