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US-2015349350-A1 · Dec 3, 2015 · US
Method of producing a conductive film
US2020274172A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2020274172-A1 |
| Application number | US-202016871041-A |
| Country | US |
| Kind code | A1 |
| Filing date | May 11, 2020 |
| Priority date | Dec 27, 2013 |
| Publication date | Aug 27, 2020 |
| Grant date | — |
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Abstract
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Provided is a method of producing a conductive film. The method comprises a step of performing gas phase treatment by ozone of carbon nanotubes having an average diameter Av of at least 0.5 nm and no greater than 15 nm, and the average diameter Av and a diameter standard deviation σ satisfying a relationship 0.60>(3δ/Av)>0.20 to obtain surface treated carbon nanotubes, and a step of mixing the surface treated carbon nanotubes and Ketjen black to obtain a conductive film having a content ratio by mass of the surface treated carbon nanotubes to the Ketjen black of 5/5 to 9/1.
First claim
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1 . A method of producing a conductive film comprising: a step of performing gas phase treatment by ozone of carbon nanotubes having an average diameter Av of at least 0.5 nm and no greater than 15 nm, and the average diameter Av and a diameter standard deviation σ satisfying a relationship 0.60>(3σ/Av)>0.20 to obtain surface treated carbon nanotubes, and a step of mixing the surface treated carbon nanotubes and Ketjen black to obtain a conductive film having a content ratio by mass of the surface treated carbon nanotubes to the Ketjen black of 5/5 to 9/1. 2 . The method of producing a conductive film of claim 1 , further comprising: a step of metal nanoparticles being caused to be supported by the surface treated carbon nanotubes. 3 . The method of producing a conductive film of claim 2 , wherein the metal nanoparticles are platinum nanoparticles. 4 . The method of producing a conductive film of claim 2 , wherein an amount of the metal nanoparticles supported by the surface treated carbon nanotubes is at least 1 part by mass relative to 100 parts by mass of the surface treated carbon nanotubes. 5 . The method of producing a conductive film of claim 1 , wherein a carboxy group has been introduced into the surface treated carbon nanotubes.
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Classifications
After-treatment · CPC title
Fuel cells · CPC title
- H01M8/0243Primary
in the form of mixtures · CPC title
Particles with a specific particle size distribution · CPC title
Porous electrodes · CPC title
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- What does patent US2020274172A1 cover?
- Provided is a method of producing a conductive film. The method comprises a step of performing gas phase treatment by ozone of carbon nanotubes having an average diameter Av of at least 0.5 nm and no greater than 15 nm, and the average diameter Av and a diameter standard deviation σ satisfying a relationship 0.60>(3δ/Av)>0.20 to obtain surface treated carbon nanotubes, and a step of mixing the …
- Who is the assignee on this patent?
- Zeon Corp
- What technology area does this patent fall under?
- Primary CPC classification H01M8/0243. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Aug 27 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).