SYSTEMS AND METHODS OF GRAPHENE SUPPORTED CATALYSTS

Jian Xie

Patent

Atlas literature

Patent

US 10,886,540

SYSTEMS AND METHODS OF GRAPHENE SUPPORTED CATALYSTS

Jian Xie

Drawings

Patent drawings and their descriptions. Click a drawing to enlarge it.

FIG. 1

FIG. 1 B illustrates a method of manufacturing a three-dimensional functionalized graphene structure according to various embodiments; [0018]

FIG. 2

FIG. 2 illustrates the H + conductivity of conventional graphene and functionalized graphene based on varying relative humidity according to various …

FIG. 3

FIG. 3 illustrates the e conductivity of conventional graphene and functionalized graphene based on varying relative humidity according to various embodiments; …

FIG. 4

FIG. 4A is a transmission electron microscopy ("TEM") image of platinum (Pt) nanoparticles dispersed in a conventional graphene sheet; [0021]

FIG. 5

FIG. 5 B is a histogram illustrating the distribution of the Pt nanoparticles dispersed in the functionalized graphene sheet according to various embodiments; …

FIG. 6

FIG. 6C and 6D illustrate particle surface migration of the Pt nanoparticles dispersed on a functionalized graphene sheet according to various embodiments; SVG …

FIG. 7

FIG. 7 illustrates a comparison of various substrates; [0027]

FIG. 8

FIG. 8 illustrates the self- assembly of a three-dimensional functionalized graphene structure according to various embodiments; [0028]

FIG. 9

FIG. 9 illustrates a TEM image of composites according to various embodiments; [0029]

FIG. 10

FIG. 10 illustrates Hg porosimetry pore size distribution of various embodiments; [0030]

FIG. 11

FIG. 12

FIG. 12A-C illustrate various VIR curves after various cycles; [0032]

FIG. 13

FIG. 13 illustrates a nanoscale x-ray computed tomography image of a Pt/PBI- functionalized graphene catalyst according to various embodiments; and [0033]

FIG. 14

FIG. 14 illustrates a three-dimensional TEM image of a conventional Pt/XC₇₂ (carbon black) catalyst. [0034] Corresponding reference characters indicate …

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 · 3 dependent

1
Independent
1-23. Canceled
23
Independent
Canceled
24
Independentfunctionalized graphene sheetmetal catalystfirst functional groupfunctionalized nanocarbon particlethree-dimensional functionalized graphene structure
A three-dimensional functionalized graphene structure comprising: a ﬁrst functionalized graphene comprising: a ﬁrst graphene sheet; a metal dispersed throughout the ﬁrst graphene sheet, wherein the metal comprises at least one of Pt, Rh, Pd, Ag, Au, Ni, Os, Ir, Mn, Co, alloys thereof, oxides thereof, or mixtures thereo f; a ﬁrst functional group covalently bonded to the ﬁrst graphene sheet, wherein the ﬁrst functional group comprises at least one of sulfonate, S 0 3-, SVG 15377976.08-02-2020.KDDAN₂H₁RXEAPX2.CLM.1.svg 0.16 4.79 Black and white combinations thereof, polybenzimidazole (PBI), poly(ethylene oxide) (PE O), polyphenylene oxide (PPO), polyaniline, or mixtures thereof, a second functionalized graphene; and a functionalized nanocarbon particle located between the ﬁrst and second functionalized graphenes, wherein the functionalized nanocarbon particle has an opposite surface charge compared to the ﬁrst functional group of the ﬁrst functionalized graphene. Previously presented
1. 25
  Dependent← claim 24functionalized graphene sheetfunctionalized nanocarbon particlethree-dimensional functionalized graphene structure
  The three-dimensional functionalized graphene structure of claim 24, wherein: the ﬁrst functionalized graphene has a positively charged ﬁrst functional group; and the functionalized nanocarbon has a negatively charged functional group. Previously presented
2. 26
  Dependent← claim 24functionalized nanocarbon particlethree-dimensional functionalized graphene structure
  The three-dimensional functionalized graphene structure of claim 24, wherein the functionalized nanocarbon particle forms at least one of pores, channels, or a combination thereof between the ﬁrst and second functionalized graphenes that allow mass transport of reactants and products between the ﬁrst and second functionalized graphenes. Previously presented

Device structures

Layer stacks claimed or described, ordered top of device to substrate.

three-dimensional functionalized graphene structure

functionalized graphene sheetsecond functionalized graphene

functionalized nanocarbon particlefunctionalized nanocarbon particle spacer (opposite surface charge)

functionalized graphene sheetfirst functionalized graphene sheet with dispersed metal catalyst and covalently bonded functional group

Materials

Materials described outside the worked examples.

functionalized graphene sheet

Catalyst Support/Electrode Material

metal catalyst

Dispersed Metal Catalyst

first functional group

Process steps

Additional fabrication and treatment steps described in the patent.

Functionalization And Metal Loading

Step 1

Process details

step 1:functionalizing graphene with a first functional group comprising at least one of sulfonate, SO₃H, carboxylate, COOH, tertiary amine NR₃+, PBI, PEO, PPO, polyaniline, or mixtures thereof

step 2:loading a metal onto the graphene, wherein the metal comprises at least one of Pt, Rh, Pd, Ag, Au, Ni, Os, Ir, Mn, Co, alloys thereof, oxides thereof, or mixtures thereof

step 3:adding a functionalized nanocarbon particle with opposite surface energy to form a three-dimensional functionalized graphene structure

Characterization

Measurements and analyses referenced in the patent, with their drawing references.

tem

TEM

FIG. 4A is a transmission electron microscopy ("TEM") image of platinum (Pt) nanoparticles dispersed in a conventional graphene sheet; [0021]

Figure references

FIG. 4

graphenegraphene

Reported properties

Performance values and ranges asserted in the specification or claims.

Property	Value	Material
Average Pore Size	3–2000 nm	—
Metal Nanoparticle Size	1–6 nm	metal catalyst

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