Exfoliated graphite-resin composite material and method for producing the same
US-2017210876-A1 · Jul 27, 2017 · US
Carbon material and method for producing same, electrode material for electrical storage device, and electrical storage device
US11975972B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11975972-B2 |
| Application number | US-201917263630-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 30, 2019 |
| Priority date | Aug 3, 2018 |
| Publication date | May 7, 2024 |
| Grant date | May 7, 2024 |
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- Title
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Abstract
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Provided is a carbon material that is large in specific surface area, and moreover, capable of easily forming an electrode film even when any binder is substantially not contained. Provided is a carbon material that has a BET specific surface area of 100 m 2 /g or more, with the weight of the carbon material remaining on a sieve after shaking being 90% by weight or more with respect to 100% by weight of the carbon material put in the sieve, when 0.2 g of the carbon material packed in a cylindrical syringe of 2 cm in diameter is compressed at a pressure of 16 kN, the whole of the compressed carbon material is taken out from the syringe and put in the sieve with an aperture of 4.75 mm, and the sieve is shaken for 1 minute.
First claim
Opening claim text (preview).
The invention claimed is: 1. A carbon material comprising a plurality of recesses and a plurality of protrusions, wherein the plurality of protrusions are protrusions that fit into the plurality of recesses, wherein the carbon material has a BET specific surface area of 100 m 2 /g or more, and wherein a weight of the carbon material remaining on a sieve after shaking is 90% by weight or more with respect to 100% by weight of the carbon material put in the sieve, when 0.2 g of the carbon material packed in a cylindrical syringe of 2 cm in diameter is compressed at a pressure of 16 kN, the whole of the compressed carbon material is taken out from the syringe and put in the sieve with an aperture of 4.75 mm, and the sieve is shaken for 1 minute. 2. The carbon material according to claim 1 , wherein the carbon material comprises a carbide of a resin. 3. The carbon material according to claim 1 , wherein the carbon material comprises a carbon material that has a graphene laminated structure. 4. The carbon material according to claim 3 , wherein the carbon material that has the graphene laminated structure is graphite or exfoliated graphite. 5. The carbon material according to claim 4 , wherein the graphite or the exfoliated graphite is partially exfoliated graphite which has a graphite structure and in which graphite is partially exfoliated. 6. An electrode material for an electrical storage device, the electrode material comprising the carbon material according to claim 1 . 7. An electrical storage device comprising an electrode made from the electrode material for an electrical storage device according to claim 6 .
Assignees
Inventors
Classifications
- C01B32/21Primary
After-treatment · CPC title
Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30 · CPC title
by exfoliation · 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
Powders or particles, e.g. composition thereof · CPC title
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- What does patent US11975972B2 cover?
- Provided is a carbon material that is large in specific surface area, and moreover, capable of easily forming an electrode film even when any binder is substantially not contained. Provided is a carbon material that has a BET specific surface area of 100 m 2 /g or more, with the weight of the carbon material remaining on a sieve after shaking being 90% by weight or more with respect to 100% by …
- Who is the assignee on this patent?
- Sekisui Chemical Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C01B32/21. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 07 2024 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 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).