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
Negative electrode active material for electric device
US10367198B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10367198-B2 |
| Application number | US-201214119379-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 9, 2012 |
| Priority date | May 25, 2011 |
| Publication date | Jul 30, 2019 |
| Grant date | Jul 30, 2019 |
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Abstract
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A negative electrode active material for an electric device includes an alloy containing Si in a range of greater than or equal to 27% by mass and less than 100% by mass, Sn in a range of greater than 0% by mass and less than or equal to 73% by mass, V in a range of greater than 0% by mass and less than or equal to 73% by mass, and inevitable impurities as a residue. The negative electrode active material can be obtained with, for example, a multi DC magnetron sputtering apparatus by use of Si, Sn, and V as targets. An electric device using the negative electrode active material can achieve long cycle life and ensure a high capacity and cycle durability.
First claim
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The invention claimed is: 1. A negative electrode active material for a lithium ion secondary battery, comprising: an alloy consisting of Si in a range of greater than or equal to 27% by mass and less than or equal to 52% by mass, Sn in a range of greater than 10% by mass and less than or equal to 40% by mass, V in a range of greater than or equal to 20% by mass and less than or equal to 63% by mass, and inevitable impurities as a residue. 2. A negative electrode for a lithium ion secondary battery, comprising: the negative electrode active material for a lithium ion secondary battery according to claim 1 . 3. A lithium ion secondary battery comprising: the negative electrode active material for a lithium ion secondary battery according to claim 1 . 4. A lithium ion secondary battery comprising: the negative electrode for a lithium ion secondary battery according to claim 2 .
Assignees
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Classifications
Batteries in motive systems, e.g. vehicle, ship, plane · CPC title
Tin or alloys based on tin · CPC title
Alloys based on a metal not provided for in groups C22C5/00 - C22C27/00 · CPC title
Alloys based on tin · CPC title
Cross-Sectional Technologies · mapped topic
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- What does patent US10367198B2 cover?
- A negative electrode active material for an electric device includes an alloy containing Si in a range of greater than or equal to 27% by mass and less than 100% by mass, Sn in a range of greater than 0% by mass and less than or equal to 73% by mass, V in a range of greater than 0% by mass and less than or equal to 73% by mass, and inevitable impurities as a residue. The negative electrode acti…
- Who is the assignee on this patent?
- Watanabe Manabu, Yoshida Masao, Tanaka Osamu, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification H01M4/386. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jul 30 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 11 related publications on this page (citations in our corpus or others sharing the same primary CPC).