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US-2017263386-A1 · Sep 14, 2017 · US
Porous carbon material for electric double-layer capacitor electrode, method of producing the same, and electric double-layer capacitor electrode
US10629387B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10629387-B2 |
| Application number | US-201716060602-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 2, 2017 |
| Priority date | Jun 6, 2016 |
| Publication date | Apr 21, 2020 |
| Grant date | Apr 21, 2020 |
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Abstract
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A porous carbon material for an electric double-layer capacitor electrode, in which the porous carbon material is formed from secondary particles having a particle size of from 3 μm to 100 μm, the secondary particles are formed from primary particles having a particle size of from 0.1 μm to 0.5 μm, and the porous carbon material has an internal specific surface area of 900 m2/g or greater.
First claim
Opening claim text (preview).
The invention claimed is: 1. A porous carbon material for an electric double-layer capacitor electrode, wherein the porous carbon material is formed from secondary particles having a particle size of from 3 μm to 100 μm, the secondary particles are formed from primary particles having a particle size of from 0.1 μm to 0.5 μm, the porous carbon material has an internal specific surface area of 900 m 2 /g or greater, and a pore volume of micropores in the porous carbon material is 0.3 cm 3 /g or greater which is calculated by a t method from a nitrogen adsorption isotherm. 2. The porous carbon material according to claim 1 , wherein the primary particles are bonded to each other by neck growth. 3. The porous carbon material according to claim 1 , wherein the porous carbon material has an external specific surface area of from 5 m 2 /g to 50 m 2 /g. 4. The porous carbon material according to claim 1 , wherein a peak of a pore size of micropores in the porous carbon material is in a range of from 7.0 Å to 10 Å which is calculated by a QSDFT method from a nitrogen adsorption isotherm. 5. The porous carbon material according to claim 1 , wherein a pore size of the micropores is 0.63 nm or greater which is calculated by the t method from the nitrogen adsorption isotherm. 6. The porous carbon material according to claim 1 , wherein a pore volume of mesopores in the porous carbon material is 0.1 cm 3 /g or greater which is calculated by a BJH method from a nitrogen adsorption isotherm. 7. An electric double-layer capacitor electrode comprising the porous carbon material according to claim 1 .
Assignees
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Classifications
- H01G11/24Primary
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
Raw materials therefor, e.g. resins or coal · CPC title
Active carbon · CPC title
specially adapted for electrodes (carbonisation or activation of carbon for the manufacture of electrodes H01G11/34) · CPC title
characterised by gaseous activating agents · CPC title
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- What does patent US10629387B2 cover?
- A porous carbon material for an electric double-layer capacitor electrode, in which the porous carbon material is formed from secondary particles having a particle size of from 3 μm to 100 μm, the secondary particles are formed from primary particles having a particle size of from 0.1 μm to 0.5 μm, and the porous carbon material has an internal specific surface area of 900 m2/g or greater.
- Who is the assignee on this patent?
- Sumitomo Electric Industries
- What technology area does this patent fall under?
- Primary CPC classification H01G11/24. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Apr 21 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).