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Negative electrode active material for electric device and electric device using same
US10290867B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10290867-B2 |
| Application number | US-201414897451-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 19, 2014 |
| Priority date | Jun 12, 2013 |
| Publication date | May 14, 2019 |
| Grant date | May 14, 2019 |
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Abstract
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A negative electrode active material having high cycle durability contains an alloy represented by the following chemical formula (1): Si x Sn y M z A a (1) (in the chemical formula (1), M is at least one metal selected from the group consisting of Ti, Zn, C, and combinations thereof, A is unavoidable impurities, x, y, z, and a represent % by mass values, and in that case, 0<x<100, 0<y<100, 0<z<100, 0≤a<0.5, and x+y+z+a=100), in which the half width of the diffraction peak of the (111) surface of Si in the range of 2θ=24 to 33° by X ray diffraction measurement of the alloy using the CuKα ray is 0.7° or more.
First claim
Opening claim text (preview).
The invention claimed is: 1. A negative electrode active material for an electric device comprising: a ternary alloy having a uniform composition ratio throughout represented by the following chemical formula (1): Si x Sn y M z A a (1) wherein M is Ti, A is unavoidable impurities, x, y, z, and a represent % by mass values, 0≤a<0.5, and x+y+z+a=100, in which the half width of the diffraction peak of the (111) surface of Si in the range of 2θ=24 to 33° by X ray diffraction measurement of the alloy using CuKα ray is 1.4° or more and less than 9°, and wherein the x, y, and z satisfy the following mathematical formula (5) or (6): 35≤ x≤ 68, 7≤ y≤ 30, 18≤ z≤ 37 (5) 39≤ x≤ 52, 30≤ y≤ 51, 7≤ z≤ 20, (6). 2. The negative electrode active material for an electric device according to claim 1 , wherein the x, y, and z satisfy the following mathematical formula (7): 46≤ x≤ 58, 7≤ y≤ 21, 24≤ z≤ 37 (7). 3. An electric device comprising the negative electrode active material for an electric device set forth in claim 1 .
Assignees
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Classifications
Alloys based on zinc · CPC title
containing tin or lead · CPC title
Alloys based on the low melting point metals Zn, Pb, Sn, Cd, In or Ga · CPC title
based on silicides · CPC title
Alloys based on tin · CPC title
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- What does patent US10290867B2 cover?
- A negative electrode active material having high cycle durability contains an alloy represented by the following chemical formula (1): Si x Sn y M z A a (1) (in the chemical formula (1), M is at least one metal selected from the group consisting of Ti, Zn, C, and combinations thereof, A is unavoidable impurities, x, y, z, and a represent % by mass values, and in that case, 0<x<100, 0<y<10…
- Who is the assignee on this patent?
- Nissan Motor
- 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 May 14 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).