Silicon-carbon composite material containing carbon material comprising layers
US-2017352878-A1 · Dec 7, 2017 · US
Method for producing random-structure GIC, method for producing exfoliated graphite dispersion liquid, exfoliated graphite dispersion liquid, and exfoliated graphite
US9919926B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9919926-B2 |
| Application number | US-201414760467-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 4, 2014 |
| Priority date | Mar 6, 2013 |
| Publication date | Mar 20, 2018 |
| Grant date | Mar 20, 2018 |
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- Title
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Abstract
Official abstract text for this publication.
The present invention provides a method for producing a random-structure GIC in which exfoliated graphite having a low regularity of a graphene stacked state and a small number of stacked graphene layers can be easily obtained by exfoliation treatment. The method includes the steps of providing an alkali metal-GIC having an alkali metal intercalated between graphene layers and bringing a polar protic solvent into contact with the alkali metal-GIC in a non-oxidizing atmosphere.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for producing an exfoliated graphite dispersion liquid comprising the steps of: providing an alkali metal-GIC having an alkali metal intercalated between graphene layers; bringing a polar protic solvent into contact with the alkali metal-GIC in a non-oxidizing atmosphere to obtain a random-structure GIC; adding the random-structure GIC to a nonpolar solvent or a polar solvent; and subjecting the random-structure GIC to exfoliation treatment in the nonpolar solvent or the polar solvent to which the random-structure GIC is added after adding the random-structure GIC to the nonpolar solvent or the polar solvent. 2. The method for producing an exfoliated graphite dispersion liquid according to claim 1 , wherein water or a lower alcohol is used as the polar solvent. 3. The method for producing an exfoliated graphite dispersion liquid according to claim 1 , wherein the polar solvent is a solvent containing a surfactant. 4. The method for producing an exfoliated graphite dispersion liquid according to claim 3 , wherein the surfactant is sodium lauryl sulfate. 5. The method for producing an exfoliated graphite dispersion liquid according to claim 4 , wherein the concentration of sodium lauryl sulfate in the solvent containing sodium lauryl sulfate is in the range of 0.1% by weight or more and 10% by weight or less.
Assignees
Inventors
Classifications
Expansion; Exfoliation · CPC title
- C01B32/22Primary
Intercalation · CPC title
- C01B31/0415Primary
Chemistry & Metallurgy · mapped topic
by exfoliation · CPC title
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- What does patent US9919926B2 cover?
- The present invention provides a method for producing a random-structure GIC in which exfoliated graphite having a low regularity of a graphene stacked state and a small number of stacked graphene layers can be easily obtained by exfoliation treatment. The method includes the steps of providing an alkali metal-GIC having an alkali metal intercalated between graphene layers and bringing a polar …
- Who is the assignee on this patent?
- Sekisui Chemical Co Ltd, Univ Oita
- What technology area does this patent fall under?
- Primary CPC classification C01B32/22. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 20 2018 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).