OF THE INVENTION: GRAPHENE DISPERSION, METHOD FOR PRODUCING

Zhenqi Wu

Patent

Atlas literature

Patent

US 10,734,652

OF THE INVENTION: GRAPHENE DISPERSION, METHOD FOR PRODUCING

Zhenqi Wu

Claims

Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.

3 independent · 12 dependent

1
Independentgrapheneamine compound (MW ≤ 150, with alcoholic hydroxyl group)C₅H₉NO
A graphene dispersion comprising a graphene, an amine compound having a molecular weight of 150 or less, and an organic solvent, wherein the mass ratio of the amine compound to the graphene is 0.02 or more and 0.15 or less, wherein the organic solvent is an organic solvent containing 50% by mass or more of N-methylpyrrolidone, and wherein the amine com p ound is a com p ound havin an alcoholic h y drox yl g rou p. Currently amended
1. 2
  Dependent← claim 1amine compound (MW ≤ 150, with alcoholic hydroxyl group)
  The graphene dispersion according to claim 1, wherein the amine compound is a primary amine compound. Original
2. 4
  Dependent← claim 1isobutanolamine
  The graphene dispersion according t claim 1, wherein the amine compound is isobutanolamin. Currently amended
3. 6
  Dependent← claim 1graphene
  The graphene dispersion according to claim 1, wherein the element ratio of oxygen to carbon (0/C ratio) as measured by X-ray photoelectron spectroscopy in the graphene is 0.06 or more and 0.30 or less. Previously presented
4. 7
  Dependent← claim 1graphene
  The graphene dispersion according to claim 1, wherein the element ratio of nitrogen to carbon (N/C ratio) as measured by X-ray photoelectron spectroscopy in the graphene is 0.005 or more and 0.030 or less. Previously presented
5. 8
  Dependent← claim 1graphene
  The graphene dispersion according to claim 1, wherein the median diameter of the graphene is 1 m or more and 15 m or less. Previously presented
6. 9
  Dependent← claim 1graphene
  The graphene dispersion according to claim 1, wherein the speciﬁc surface area of the graphene is 80 m 2/g or more and 250 m 2/g or less. Previously presented
7. 10
  Dependent← claim 1graphene
  The graphene dispersion according to claim 1, wherein a solid content is 1. 5 % by mass or more and 5 % by mass or less. Currently amended
8. 11
  Dependent← claim 1graphene
  The graphene dispersion according to claim 1, wherein a viscosity of the graphene dispersion under the condition of a temperature of 23 0 C and a shear velocity of 1 s -1, as a dispersion, a solid content of which is adjusted to 2 % by mass with the organic solvent, is 30 cp or less. Currently amended
9. 12
  Dependent← claim 1graphene
  The graphene dispersion according to claim 1, wherein a viscosity of the graphene dispersion under the condition of a temperature of 23 0 C and a shear velocity of 1 s -1, as a dispersion, the solid content of which is adjusted to 3 % by mass with the organic solvent, is 20000 cp or less. Currently amended
10. 13
  Dependent← claim 1
  The graphene dispersion according to claim 1, wherein a content of com p ound havin g a mass avera g e molecular wei g ht of 3000 or more is 0.5 % by mass or less. Currently amended
11. 14
  Dependent← claim 1graphene
  A method for producing an electrode paste, comprising mixing the graphene dispersion according to claim 1, an electrode active material, a binder, and an appropriate amount of a solvent as necessary. Withdrawn
3
Independent
. Canceled
5
Independent
. Canceled

Materials

Materials described outside the worked examples.

graphene

Conductive Additive/Dispersed Material

amine compound (MW ≤ 150, with alcoholic hydroxyl group)

Process steps

Additional fabrication and treatment steps described in the patent.

Oxidation

Step 1

Temperature

25, 50°C

Duration

12, 300 min

Process details

Reported properties

Performance values and ranges asserted in the specification or claims.

Property	Value	Material
O/C ratio of graphene by XPS (claimed range)	0.06–0.3	graphene
N/C ratio of graphene by XPS (claimed range)	0.005–0.03

Why these are connected

Related documents with shared materials, methods, properties, or citations.

OF THE INVENTION: GRAPHENE DISPERSION, METHOD FOR PRODUCING | Matter42 Literature