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Method for Producing Spherical Nanocarbon Fiber Assembly, Method for Producing Carbon Nanorod and Method for Producing Graphene Nanoribbon
US2023071583A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2023071583-A1 |
| Application number | US-202017793978-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jan 20, 2020 |
| Priority date | Jan 20, 2020 |
| Publication date | Mar 9, 2023 |
| Grant date | — |
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Abstract
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A method for producing a spherical nanocarbon fiber assembly, including: freezing a dispersion liquid containing cellulose nanofibers by spraying the dispersion liquid on a brine solution to obtain a frozen product; drying the frozen product in a vacuum to obtain a dried product; and heating the dried product in an atmosphere that does not burn the dried product, thereby carbonizing the dried product to obtain a spherical nanocarbon fiber assembly.
First claim
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1 . A method for producing a spherical nanocarbon fiber assembly, the method comprising: freezing a dispersion liquid containing cellulose nanofibers by spraying the dispersion liquid on a brine solution to obtain a frozen product; drying the frozen product in a vacuum to obtain a dried product; and heating the dried product in an atmosphere that does not burn the dried product, thereby carbonizing the dried product to obtain a spherical nanocarbon fiber assembly. 2 . The method for producing the spherical nanocarbon fiber assembly according to claim 1 , wherein in the freezing, particles of atomized cellulose nanofibers having a particle size adjusted by at least one of a spray nozzle, a flow rate, or a spray pressure are sprayed. 3 . A method for producing a carbon nanorod, the method comprising: crushing the spherical nanocarbon fiber assembly obtained by the method for producing the spherical nanocarbon fiber assembly according to claim 1 to obtain a carbon nanorod. 4 . A method for producing a carbon nanorod, the method comprising: freezing a dispersion liquid or gel containing cellulose nanofibers to obtain a frozen product; drying the frozen product in a vacuum to obtain a dried product; heating the dried product in an atmosphere that does not burn the dried product, thereby carbonizing the dried product to obtain cellulose nanofiber carbon; and crushing the cellulose nanofiber carbon to obtain a carbon nanorod. 5 . A method for producing a graphene nanoribbon, the method comprising: inserting intercalators between graphite layers of the carbon nanorod obtained by the method for producing the carbon nanorod according to claim 3 to obtain an interlayer compound; and exfoliating each of the graphite layers of the interlayer compound to obtain a graphene nanoribbon. 6 . A method for producing a carbon nanorod, the method comprising: crushing the spherical nanocarbon fiber assembly obtained by the method for producing the spherical nanocarbon fiber assembly according to claim 2 to obtain a carbon nanorod. 7 . A method for producing a graphene nanoribbon, the method comprising: inserting intercalators between graphite layers of the carbon nanorod obtained by the method for producing the carbon nanorod according to claim 4 to obtain an interlayer compound; and exfoliating each of the graphite layers of the interlayer compound to obtain a graphene nanoribbon.
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Classifications
Nanoonions; Nanoscrolls; Nanohorns; Nanocones; Nanowalls · CPC title
Spheres · CPC title
Nanostrips, nanoribbons or nanobelts, i.e. solid nanofibres with two significantly differing dimensions between 1-100 nanometer · CPC title
- C01B32/15Primary
Nano-sized carbon materials · CPC title
Nanowires or nanorods, i.e. solid nanofibres with two nearly equal dimensions between 1-100 nanometer · CPC title
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- What does patent US2023071583A1 cover?
- A method for producing a spherical nanocarbon fiber assembly, including: freezing a dispersion liquid containing cellulose nanofibers by spraying the dispersion liquid on a brine solution to obtain a frozen product; drying the frozen product in a vacuum to obtain a dried product; and heating the dried product in an atmosphere that does not burn the dried product, thereby carbonizing the dried p…
- Who is the assignee on this patent?
- Nippon Telegraph & Telephone
- What technology area does this patent fall under?
- Primary CPC classification C01B32/15. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Mar 09 2023 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).