System and method of producing a composite product

Patent metadata

Field	Value
Publication number	US-11888152-B2
Application number	US-202117175343-A
Country	US
Kind code	B2
Filing date	Feb 12, 2021
Priority date	Mar 15, 2016
Publication date	Jan 30, 2024
Grant date	Jan 30, 2024

Abstract

A method of producing a composite product is provided. The method includes providing a fluidized bed of metal oxide particles in a fluidized bed reactor, providing a catalyst or catalyst precursor in the fluidized bed reactor, providing a carbon source in the fluidized bed reactor for growing carbon nanotubes, growing carbon nanotubes in a carbon nanotube growth zone of the fluidized bed reactor, and collecting a composite product comprising metal oxide particles and carbon nanotubes.

First claim

What is claimed is:

1. An electrode comprising a composite product, wherein the composite product is made by a process comprising:
providing a fluidized bed of metal oxide particles in a fluidized bed reactor;
providing a catalyst or catalyst precursor in the fluidized bed reactor;
providing a carbon source in the fluidized bed reactor for growing carbon nanotubes;
growing carbon nanotubes in a carbon nanotube growth zone of the fluidized bed reactor to provide in-situ mixing of the carbon nanotubes and the metal oxide particles; and
collecting the metal oxide particles and carbon nanotubes on only one surface of a porous filter or membrane to provide a homogenous composite product,
wherein the composite product comprises about 0.7 wt % carbon nanotubes.

2. The electrode according to claim 1 , wherein the catalyst or catalyst precursor comprises ferrocene.

3. The electrode according to claim 1 , wherein the catalyst precursor comprises ferrocene and an alcohol, and wherein the alcohol is the carbon source for growing carbon nanotubes.

4. The electrode according to claim 1 , wherein the process further comprises heating the carbon nanotube growth zone to a temperature greater than about 1000° C., and
wherein the fluidized bed reactor is heated to a temperature of greater than about 450° C. and less than about 850° C.

5. The electrode according to claim 1 , wherein the metal oxide particles are mixed metal oxide particles, and the carbon nanotubes are single-wall carbon nanotubes.

6. The electrode according to claim 1 , wherein the metal oxide particles are lithiated mixed metal oxide particles, and the carbon nanotubes are single-wall carbon nanotubes.

7. The electrode according to claim 1 , wherein the metal oxide particles are lithium nickel manganese cobalt oxide particles, and the carbon nanotubes are single-wall carbon nanotubes.

8. The electrode according to claim 1 , wherein the fluidized bed reactor is heated to a temperature of greater than about 800° C.

9. The electrode according to claim 1 , wherein collecting the metal oxide particles and carbon nanotubes to provide the homogenous composite product comprises providing a flow of carrier gas to the fluidized bed reactor and carrying the homogenous composite product comprising the carbon nanotubes and the metal oxide particles through the fluidized bed reactor and to the porous filter or membrane.

10. The electrode according to claim 9 , wherein the process further comprises heating the carbon nanotube growth zone to a temperature greater than about 450° C. and less than about 850° C.

11. The electrode according to claim 9 , wherein the metal oxide particles are mixed metal oxide particles, and the carbon nanotubes are single-wall carbon nanotubes.

12. The electrode according to claim 9 , wherein the metal oxide particles are lithiated mixed metal oxide particles, and the carbon nanotubes are single-wall carbon nanotubes.

13. The electrode according to claim 9 , wherein the metal oxide particles are lithium nickel manganese cobalt oxide particles, and the carbon nanotubes are single-wall carbon nanotubes.

14. The electrode according to claim 9 , wherein the fluidized bed reactor is heated to a temperature of greater than about 450° C. and less than about 850° C.

15. The electrode according to claim 9 , wherein the fluidized bed reactor is heated to a temperature of greater than about 800° C.

Assignees

• Honda Motor Co Ltd
• Nanosynthesis Plus Ltd

Inventors

• Harutyunyan Avetik
• Pierce Neal
• Pigos Elena Mora

Classifications

• H01M4/362 Primary

  Composites · CPC title

• B01J8/002

  with a moving instrument · CPC title

• B01J8/003

  in a downward flow · CPC title

• B01J8/005

  Separating solid material from the gas/liquid stream (separation processes per se B01D) · CPC title

• B01J8/006

  by filtration · CPC title