# US 10,870,579 B2 · Graphene preparation method based on polyphasic quantum self-coupling reaction

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- Number: US 10,870,579 B2
- Document ID: US10870579B2
- Status: Granted
- Kind: B2
- Application number: 16/095,357
- Filed: 2017-11-07
- Published: 2019-05-09
- Granted: 2020-12-22
- Earliest claimed: 2017-01-04
- Assignees: Leung Chit Or
- Applicants: Leung Chit Or
- Inventors: Leung Chit Or; Sze King James Leung; Yeuk Kee Szeto
- Web page: https://patentgrep.com/patent/US10870579B2

## CPC

- C01B 32/19: by exfoliation
- C01B 32/225: Expansion; Exfoliation
- C05F 7/00: Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
- C01B 2204/04: Specific amount of layers or specific thickness
- C01P 2006/80: Compositional purity
- Y02A 40/20: Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
- C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C}
- C05F: ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C01P: INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE

## Abstract

A graphene preparation method includes steps of: thoroughly mixing flake graphite powder with a intercalating agent through electrically string, then adding a reagent solution into a mixture of the flake graphite powder and the intercalating agent and thoroughly stirring for acting, so as to obtain no more than five layers of graphene; wherein the flake graphite powder, the intercalating agent and the reagent solution form a coexistence state of the three electronic phases; electronic phase resonance is induced among the materials, releasing a large amount of energy in the form of vibration and heat across interfaces between layers of carbon atoms, resulting in exfoliation of graphene. The thorough permeation of the intercalating agent ensures the electronic phase resonance can be induced in most layer interfaces, achieving few layer graphene which is equivalent to 5 layers or less.

## Claims

### Claim 1

A graphene preparation method, comprising steps of:
thoroughly mixing flake graphite powder with an intercalating solution to form a premix, then adding a reagent into the premix and thoroughly stirring for reaction to begin, so as to produce few-layer graphene; wherein three different electronic phases of the flake graphite powder, the intercalating solution and the reagent coexist in a reactant; due to differences in electronic potential of the flake graphite powder, the intercalating solution and the reagent, the electronic phases of the flake graphite powder, the intercalating solution and the reagent interact with each other to induce resonance among electrons, releasing energy by sending out shock waves and heat across interfaces between layers of carbon atoms, resulting in exfoliation of the few-layer graphene.

### Claim 2 (depends on 1)

The graphene preparation method, as recited in claim 1, wherein contents of a three-phase mixed reaction are:
the flake graphite powder of 50-150 g;
the intercalating agent of 500-1000 ml; and
the reagent solution of 50-100 ml.

### Claim 3 (depends on 1)

The graphene preparation method, as recited in claim 1, wherein a purity of the flake graphite powder is 99.99%.

### Claim 4 (depends on 1)

The graphene preparation method, as recited in claim 1, wherein according to volume fraction, the intercalating agent comprises 75% of oxygenated water, 10% of peroxycarbonate, 10% of a non-ionic chelating agent and 5% of an oleophilic hydrophilic agent.

### Claim 5 (depends on 1)

The graphene preparation method, as recited in claim 1, wherein according to volume fraction, a reagent solution comprises 50% of (NH4)4.EDTA (Ethylenediaminetetraacetic acid) and 50% of diethylenetriaminepentaacetic acid.

### Claim 6 (depends on 1)

The graphene preparation method, as recited in claim 1, wherein byproducts of a three-phase auto-coupling energy reaction comprise water vapor, oxygen, and liquid containing organic chelates, wherein the water vapor and the oxygen are directly discharged, while the liquid containing the organic chelates is further synthesized into organic fertilizers for agricultural productions.