Spark plug electrode material and spark plug
US-9166380-B2 · Oct 20, 2015 · US
Method for producing negative electrode active material for lithium ion secondary battery
US10256464B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10256464-B2 |
| Application number | US-201715459132-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 15, 2017 |
| Priority date | Mar 30, 2013 |
| Publication date | Apr 9, 2019 |
| Grant date | Apr 9, 2019 |
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Abstract
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A method for producing a negative electrode active material for a lithium ion secondary battery, comprising a step of charging either silicon and copper (II) oxide or silicon and copper metal in a pulverization device, pulverizing either the silicon and copper (II) oxide or silicon and copper metal, and simultaneously mixing either silicon and copper (II) oxide or silicon and copper metal thus pulverized. A negative electrode active material for a lithium ion secondary battery is produced by the method.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for producing a negative electrode active material, comprising: a) physically charging elemental silicon and copper (II) oxide in a pulverization device; and b) pulverizing the elemental silicon and copper (II) oxide charged in the pulverization device, wherein the pulverized elemental silicon and copper (II) oxide is also mixed as part of the pulverizing, and using the negative electrode active material as a lithium ion secondary battery. 2. A method for producing a negative electrode active material containing fine particles of elemental silicon having an average crystallite diameter (d x ) measured by an X-ray diffractometry of 50 nm or less, and having elemental ratios, expressed by molar ratios, Cu/(Si+Cu+O) of from 0.02 to 0.30 and O/(Si+Cu+O) each are from 0.02 to 0.30 comprising: a) physically charging elemental silicon and copper (II) oxide in a pulverization device; and b) pulverizing the elemental silicon and copper (II) oxide charged in the pulverization device, wherein the pulverized elemental silicon and copper (II) oxide is also mixed as part of the pulverizing, and using the negative electrode active material as a lithium ion secondary battery.
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Classifications
Preparing or treating the powders individually or as batches {(pigments for ceramics C09C1/0009); preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B} · CPC title
Physical characteristics, e.g. porosity, surface area · CPC title
Copper oxides, cuprates or oxide-forming salts thereof, e.g. CuO or Cu2O · CPC title
Silicon · CPC title
as mixtures · CPC title
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- What does patent US10256464B2 cover?
- A method for producing a negative electrode active material for a lithium ion secondary battery, comprising a step of charging either silicon and copper (II) oxide or silicon and copper metal in a pulverization device, pulverizing either the silicon and copper (II) oxide or silicon and copper metal, and simultaneously mixing either silicon and copper (II) oxide or silicon and copper metal thus …
- Who is the assignee on this patent?
- Univ Tohoku, Dowa Holdings Co Ltd
- 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 Apr 09 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).