# US 11,898,265 B2 · Method for preparing carbon material

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- Number: US 11,898,265 B2
- Document ID: US11898265B2
- Status: Granted
- Kind: B2
- Application number: 17/695,063
- Filed: 2022-03-15
- Published: 2023-07-06
- Granted: 2024-02-13
- Earliest claimed: 2022-01-06
- Assignees: Qingdao University of Science and Technology
- Applicants: Qingdao University of Science & Technology
- Inventors: Yan He; Dianming Chu; Wenjuan Bai; Qianpeng Dong
- Web page: https://patentgrep.com/patent/US11898265B2

## CPC

- C25D 9/08: by cathodic processes
- B01J 23/745: Iron
- C01B 32/05: Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30
- C25D 13/02: with inorganic material
- C25D 13/16: Wires; Strips; Foils
- C25D 13/22: Servicing or operating {apparatus or multistep processes}
- C25D 21/12: Process control or regulation (controlling or regulating in general G05)
- Y02P 20/129: Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
- C25D: PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C}
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

Disclosed is a method for preparing a carbon material, comprising applying a voltage to an electrically conductive medium to form an electrically conductive path in an oxygen-free environment containing a carbon source and a catalyst to obtain the carbon material, wherein the electrically conductive medium includes a solid substrate or a liquid-phase electrically conductive system; under the condition that the electrically conductive medium is the liquid-phase electrically conductive system, the carbon material is obtained in the liquid-phase electrically conductive system; and under the condition that the electrically conductive medium is the solid substrate, the carbon material is obtained on a surface of the solid substrate.

## Claims

### Claim 1

A method for preparing a carbon material, comprising:
connecting two ends of an electrically conductive medium to an anode and a cathode, respectively; and
applying a voltage to the electrically conductive medium to form an electrically conductive path in an oxygen-free environment containing a carbon source and a catalyst to obtain the carbon material, wherein the electrically conductive medium is a solid substrate;
wherein the carbon material is obtained on a surface of the solid substrate; and
wherein the carbon source is selected from the group consisting of ethanol and ethylene glycol, the catalyst is Fe, the electrically conductive medium is carbon fibers, the oxygen-free environment is provided by one selected from the group consisting of ethanol and ethylene glycol, and the formed electrically conductive path has a current of 1.5-5 A and a voltage of 10-40 V.

### Claim 2

A method for preparing a carbon material, comprising:
applying a voltage to an electrically conductive medium to form an electrically conductive path in an oxygen-free environment containing a carbon source and a catalyst to obtain the carbon material,
wherein the carbon source is selected from the group consisting of ethanol and ethylene glycol, the catalyst is Fe, the electrically conductive medium is carbon fibers, the oxygen-free environment is provided by one selected from the group consisting of ethanol and ethylene glycol, and the formed electrically conductive path has a current of 1.5-5 A and a voltage of 10-40 V.