Porous carbon product, method for the production thereof, and use of the same
US-9287556-B2 · Mar 15, 2016 · US
Composite carbon materials comprising lithium alloying electrochemical modifiers
US10714744B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10714744-B2 |
| Application number | US-201916406971-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 8, 2019 |
| Priority date | Mar 14, 2013 |
| Publication date | Jul 14, 2020 |
| Grant date | Jul 14, 2020 |
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Abstract
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The present application is generally directed to composites comprising a hard carbon material and an electrochemical modifier. The composite materials find utility in any number of electrical devices, for example, in lithium ion batteries. Methods for making the disclosed composite materials are also disclosed.
First claim
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The invention claimed is: 1. A method for preparing a silicon-carbon composite, the method comprising contacting an amorphous activated porous carbon material having a total pore volume ranging from 0.6 cc/g to 1.0 cc/g with a gas comprising silane at a temperature between 400° C. and 500° C., thereby depositing elemental silicon in a pore of the amorphous activated porous carbon material to form the silicon-carbon composite. 2. The method of claim 1 , wherein the gas comprising silane further comprises nitrogen. 3. The method of claim 1 , wherein the amorphous activated porous carbon material is contacted with the gas comprising silane for a period of time ranging from 5 minutes to 5 hours. 4. The method of claim 1 , wherein the amorphous activated porous carbon material is contacted with the gas comprising silane in a kiln or fluidized bed. 5. The method of claim 4 , wherein the kiln is a rotary kiln. 6. The method of claim 1 , wherein the amorphous activated porous carbon material is contacted with the gas comprising silane at a pressure below atmospheric pressure. 7. The method of claim 1 , wherein the amorphous activated porous carbon material has a fractional pore surface area of pores at or below 100 nm that comprises at least 50% of the total pore surface area. 8. The method of claim 1 , wherein the amorphous activated porous carbon material has a fractional pore surface area of pores at or below 100 nm that comprises at least 90% of the total pore surface area. 9. The method of claim 1 , wherein the amorphous activated porous carbon material comprises particles having a median particle diameter ranging from 1 micron to 10 microns. 10. The method of claim 1 , wherein the temperature is between 400° C. and 450° C.
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Frequently asked questions
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- What does patent US10714744B2 cover?
- The present application is generally directed to composites comprising a hard carbon material and an electrochemical modifier. The composite materials find utility in any number of electrical devices, for example, in lithium ion batteries. Methods for making the disclosed composite materials are also disclosed.
- Who is the assignee on this patent?
- Group14 Technologies Inc
- What technology area does this patent fall under?
- Primary CPC classification H01M4/366. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jul 14 2020 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 12 related publications on this page (citations in our corpus or others sharing the same primary CPC).