Carbonaceous material and method for producing same
US-2020308006-A1 · Oct 1, 2020 · US
Carbonaceous material, carbonaceous material-containing electrode material for electric double layer capacitor, electrode for electric double layer capacitor, and electric double layer capacitor
US10984963B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10984963-B2 |
| Application number | US-201816488488-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 23, 2018 |
| Priority date | Feb 27, 2017 |
| Publication date | Apr 20, 2021 |
| Grant date | Apr 20, 2021 |
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Abstract
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The present invention relates to a carbonaceous material having a specific surface area of 1,800 m2/g to 3,000 m2/g according to a BET method, an R-value of 1.2 or more and a G-band half-value width of 70 cm−1 or more according to a Raman spectrum.
First claim
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The invention claimed is: 1. A carbonaceous material having a specific surface area of 1,800 m 2 /g to 3,000 m 2 /g according to a BET method, an R-value of 1.2 to 1.6 and a G-band half-value width of 70 cm −1 or more according to a Raman spectrum. 2. The carbonaceous material according to claim 1 , wherein the carbonaceous material is derived from a plant. 3. The carbonaceous material according to claim 1 , wherein the material has a potassium element content of 1,000 ppm or less. 4. The carbonaceous material according to claim 1 , wherein the material has an iron element content of 200 ppm or less. 5. The carbonaceous material according to claim 1 , wherein the material has a hydrogen element content of 0.47 mass % or less. 6. A method for producing the carbonaceous material according to claim 1 , the method comprising: performing a high-temperature halogen-compound treatment by heat-treating an activated carbon having an average particle diameter of 100 μm to 10,000 μm and a specific surface area of 1,600 m 2 /g to 3,000 m 2 /g according to a BET method at 500° C. to 1,250° C. in an inert gas atmosphere comprising a halogen compound to obtain the carbonaceous material. 7. A method for producing the carbonaceous material according to claim 1 , the method comprising: impregnating an activated carbon having an average particle diameter of 100 μm to 10,000 μm and a specific surface area of 1,600 m 2 /g to 3,000 m 2 /g according to a BET method with an alkali metal hydroxide to obtain an alkali metal hydroxide-impregnated activated carbon, and performing a high-temperature halogen-compound treatment by heat-treating the alkali metal hydroxide-impregnated activated carbon at 500° C. to 1,250° C. in an inert gas atmosphere comprising a halogen compound to obtain the carbonaceous material. 8. An electrode material comprising: the carbonaceous material according to claim 1 . 9. An electrode comprising the electrode material according to claim 8 . 10. An electric double-layer capacitor comprising the electrode according to claim 9 . 11. The carbonaceous material according to claim 1 , wherein the material has a G-band half-value width of 70 cm −1 to 86 cm −1 according to a Raman spectrum.
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Classifications
Energy storage using capacitors · CPC title
specially adapted for electrodes (carbonisation or activation of carbon for the manufacture of electrodes H01G11/34) · CPC title
- H01G11/34Primary
characterised by carbonisation or activation of carbon · CPC title
characterised by structural features of the materials making up or comprised in the electrodes, e.g. form, surface area or porosity; characterised by the structural features of powders or particles used therefor · CPC title
Micrometer sized, i.e. from 1-100 micrometer · CPC title
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- What does patent US10984963B2 cover?
- The present invention relates to a carbonaceous material having a specific surface area of 1,800 m2/g to 3,000 m2/g according to a BET method, an R-value of 1.2 or more and a G-band half-value width of 70 cm−1 or more according to a Raman spectrum.
- Who is the assignee on this patent?
- Kuraray Co, Kurarayco Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01G11/34. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Apr 20 2021 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 7 related publications on this page (citations in our corpus or others sharing the same primary CPC).