Pyrolytic carbon black composite and method of making the same

Patent metadata

Field	Value
Publication number	US-10985372-B2
Application number	US-201916404362-A
Country	US
Kind code	B2
Filing date	May 6, 2019
Priority date	Jul 18, 2013
Publication date	Apr 20, 2021
Grant date	Apr 20, 2021

Abstract

A method of recovering carbon black includes the step of providing a carbonaceous source material containing carbon black. The carbonaceous source material is contacted with a sulfonation bath to produce a sulfonated material. The sulfonated material is pyrolyzed to produce a carbon black containing product comprising a glassy carbon matrix phase having carbon black dispersed therein. The pyrolysis can be conducted at a temperature from 1100° C. to 1490° C. A method of making a battery electrode and a lithium ion or sodium ion battery is also disclosed.

First claim

We claim:

1. A method of making a battery electrode comprising carbon black, the method comprising the steps of:
providing a non-graphitic, tire-derived carbon composite material comprising a carbonaceous source material and carbon black embedded within the carbonaceous source material;
contacting the carbonaceous source material with an oleum bath having a temperature of from 100 to 200° C. to produce a sulfonated material;
pyrolyzing the sulfonated material at a temperature of from 1100 to 1400° C. to produce a layered carbon black containing product comprising a glassy carbon matrix phase having carbon black dispersed therein, the layered carbon black containing product having an interlayer spacing of from 4 to 5 angstroms; and,
forming a battery electrode from the carbon black containing product.

2. The method of claim 1 , wherein the battery electrode is an anode.

3. The method of claim 2 , wherein the battery is a lithium ion or a sodium ion battery.

4. The method of claim 1 , wherein the battery is a lithium ion battery or a sodium ion battery.

5. The method of claim 1 , wherein pyrolysis step is conducted at a temperature that is greater than 1200° C.

6. The method of claim 1 , wherein the pyrolysis step is conducted at a temperature from 1200-1400° C.

7. The method of claim 1 , wherein pyrolysis step is conducted at a temperature from 1250-1350° C.

8. The method of claim 1 , wherein the carbon black containing product comprises pores with an average pore size of between 2 and 120 nm.

9. A method of making a battery electrode comprising carbon black, the method comprising the steps of:
providing a tire-derived carbon composite material comprising a carbonaceous source material and carbon black embedded within the carbonaceous source material;
contacting the carbonaceous source material with an oleum bath having a temperature of from 100 to 200° C. to produce a sulfonated material;
pyrolyzing the sulfonated material at a temperature of from 1100 to 1400° C. to produce a layered carbon black containing product comprising a glassy carbon matrix phase having carbon black dispersed therein, the layered carbon black containing product having an interlayer spacing of from 4 to 5 angstroms; and,
forming a battery electrode from the carbon black containing product.

Assignees

• Ut Battelle Llc

Inventors

• Naskar Amit K
• Paranthaman Mariappan Parans

Classifications

• C01P2006/40

  Electric properties · CPC title

• C09C1/48

  Carbon black · CPC title

• H01M4/587 Primary

  for inserting or intercalating light metals · CPC title

• H01M10/052

  Li-accumulators · CPC title

• H01M2004/027

  Negative electrodes · CPC title