Planar structural body containing fibrous carbon nanohorn aggregate

Patent metadata

Field	Value
Publication number	US-10971734-B2
Application number	US-201716085309-A
Country	US
Kind code	B2
Filing date	Feb 28, 2017
Priority date	Mar 16, 2016
Publication date	Apr 6, 2021
Grant date	Apr 6, 2021

Abstract

There is provided a planar structural body 1 comprising a fibrous carbon nanohorn aggregate 2 in which a plurality of single-walled carbon nanohorns are aggregated in a fibrous state, and particularly the planar structural body in which a globular carbon nanohorn aggregate 3 is mixed is used. The planar structural body comprising such a fibrous carbon nanohorn aggregate can be used for electrode materials for lithium ion batteries, fuel cells, capacitors, electrochemical actuators, air cells, solar cells, and the like, and can be used also for electromagnetic shields, thermoconductive sheets, heat-dissipating sheets, protecting sheets, filters and absorbing materials.

First claim

The invention claimed is:

1. A planar structural body, comprising a mixture of a fibrous carbon nanohorn aggregate and a globular aggregate of carbon nanohorn, wherein the fibrous carbon nanohorn aggregate comprises a plurality of single-walled carbon nanohorns aggregated in a fibrous state, wherein the globular aggregate of carbon nanohorn comprises at least one of seed-shaped, bud-shaped, dahlia-shaped, petal dahlia-shaped, and petal-shaped globular carbon nanohorn aggregates.

2. The planar structural body according to claim 1 , wherein the fibrous carbon nanohorn aggregate has a diameter of 30 nm to 200 nm, and a length of 1 μm to 100 μm.

3. The planar structural body according to claim 1 , wherein each of the single-walled carbon nanohorns has a diameter of 1 nm to 5 nm, and a length of 30 nm to 100 nm, and has a horn-shaped tip.

4. The planar structural body according to claim 1 , comprising at least one of seed-shaped, bud-shaped, dahlia-shaped, petal dahlia-shaped and petal-shaped carbon nanohorn aggregates, connected in a fibrous state.

5. The planar structural body according to claim 1 , wherein a part of each of the single-walled carbon nanohorns has an opening portion.

6. The planar structural body according to claim 1 , further comprising at least one of carbon, a carbon compound, a metal, a semimetal and an oxide.

7. The planar structural body according to claim 6 , wherein the carbon is one or more selected from graphite, graphitizable carbon, non-graphitizable carbon, active carbon, carbon black, a carbon nanotube and graphene; the metal is one or more selected from iron, nickel, manganese, copper, silver, gold, platinum, aluminum, titanium, zinc and chromium; the semimetal is at least one of boron and silicon; and the oxide is one or more of oxides of the metals and the semimetals.

8. The planar structural body according to claim 1 , further comprising a binder.

9. The planar structural body according to claim 1 , wherein the planar structural body has a thickness of 100 nm to 10 mm.

10. The planar structural body according to claim 1 , wherein the planar structural body is an electrode material of a lithium ion battery.

11. The planar structural body according to claim 1 , wherein the planar structural body is an electrode material of a fuel cell.

12. The planar structural body according to claim 1 , wherein the planar structural body is an electrode material of a capacitor.

13. The planar structural body according to claim 1 , wherein the planar structural body is an electrode material of an electrochemical actuator.

14. The planar structural body according to claim 1 , wherein the planar structural body is an electrode material of an air cell.

15. The planar structural body according to claim 1 , wherein the planar structural body is an electrode material of a solar cell.

16. The planar structural body according to claim 1 , wherein the planar structural body is an electromagnetic shield.

17. The planar structural body according to claim 1 , wherein the planar structural body is a thermoconductive sheet.

18. The planar structural body according to claim 1 , wherein the planar structural body is a heat-dissipating sheet.

19. The planar structural body according to claim 1 , wherein the planar structural body is a filter causing gases or liquids consisting of a plurality of components to permeate, and adsorbing a part of the components.

Assignees

• Nec Corp

Inventors

• Yuge Ryota

Classifications

• H10F71/138

  Manufacture of transparent electrodes, e.g. transparent conductive oxides [TCO] or indium tin oxide [ITO] electrodes · CPC title

• C01P2006/40

  Electric properties · CPC title

• C01B32/18

  Nanoonions; Nanoscrolls; Nanohorns; Nanocones; Nanowalls · CPC title

• C01P2004/16

  Nanowires or nanorods, i.e. solid nanofibres with two nearly equal dimensions between 1-100 nanometer · CPC title

• H01M4/96 Primary

  Carbon-based electrodes · CPC title