# US 11,028,271 B2 · Functionalized metal chalcogenides of partially it crystalline phase

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- Number: US 11,028,271 B2
- Document ID: US11028271B2
- Status: Granted
- Kind: B2
- Application number: 16/211,622
- Filed: 2018-12-06
- Published: 2019-06-13
- Granted: 2021-06-08
- Earliest claimed: 2017-12-07
- Assignees: Alliance for Sustainable Energy, LLC
- Applicants: Alliance for Sustainable Energy, LLC
- Inventors: Hanyu Zhang; Eric Edward Benson; Jeffrey Lee Blackburn; Elisa Margaret Link
- Web page: https://patentgrep.com/patent/US11028271B2

## CPC

- C09C 1/0003: {Compounds of molybdenum (C09C1/0015 takes precedence)}
- C01G 39/06: Sulfides
- C01P 2002/82: by IR- or Raman-data
- C01P 2002/85: by XPS, EDX or EDAX data
- C01P 2004/02: obtained by optical microscopy
- C01P 2004/03: obtained by SEM
- C01P 2004/04: obtained by TEM, STEM, STM or AFM
- C01P 2006/40: Electric properties
- Y10T 428/2991: Coated
- C09C: TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES (treatment of materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone C04B14/00, C04B18/00, C04B20/00); PREPARATION OF CARBON BLACK {; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS}
- C01G: COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F (metal hydrides {monoborane, diborane or addition complexes thereof} C01B6/00; salts of oxyacids of halogens C01B11/00; peroxides, salts or peroxyacids C01B15/00; thiosulfates, dithionites, polythionates C01B17/64; compounds containing selenium, or tellurium C01B19/00; binary compounds of nitrogen with metals C01B21/06; azides C01B21/08; {compounds containing nitrogen, other non-metals and metal C01B21/082}; metal amides C01B21/092; nitrites C01B21/50; {compounds of noble gases C01B23/0005}; phosphides C01B25/08; salts of oxyacids of phosphorus C01B25/16; carbides C01B32/90; compounds containing silicon C01B33/00; compounds containing boron C01B35/00; compounds having molecular sieve properties but not having base-exchange properties C01B37/00; compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites, C01B39/00; cyanides C01C3/08; salts of cyanamide C01C3/16; thiocyanates C01C3/20)
- C01P: INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

The present disclosure relates to a composition that includes a metal chalcogenide having a surface and a ligand, where the ligand is covalently bound to the surface. In some embodiments of the present disclosure, the metal chalcogenide may be defined by MXz, where Z is between 1 and 3, inclusively, M (a metal) includes at least one of Sc, Zr, Hf, Zr, Ti, Nb, Ta, V, Mo, Cr, Re, W, S, Pt, Fe, Cu, Sb, In, Zn, Cd, P, and/or Mn, and X (a chalcogenide) includes at least one of S, Se, and/or Te.

## Claims

### Claim 1

A composition comprising:
a metal chalcogenide comprising MoS2 having a surface; and
a ligand comprising a phenyl ring and a moiety, wherein:
the MoS2 is at least partially in a 1T crystalline phase,
the ligand is covalently bound to the surface, and
the moiety comprises at least one of a halogen or (CH3CH2)2N.

### Claim 2 (depends on 1)

The composition of claim 1, wherein the metal chalcogenide is in a form comprising at least one of a sheet or a particle.

### Claim 3 (depends on 2)

The composition of claim 2, wherein the sheet comprises at least one monolayer of the metal chalcogenide.

### Claim 4 (depends on 2)

The composition of claim 2, wherein the sheet has a thickness between 5.0 nm and 30 nm.

### Claim 5 (depends on 2)

The composition of claim 2, wherein the particle has a characteristic length between 5.0 nm and 50,000 nm.

### Claim 6 (depends on 1)

The composition of claim 1, wherein the ligand comprises at least one of Cl2Ph or BrPh.

### Claim 7 (depends on 1)

The composition of claim 1, wherein the ligand comprises at least one of an electron donating functional group or an electron withdrawing functional group, as measured by at least one of a Hammett parameter or a work function.

### Claim 8 (depends on 7)

The composition of claim 7, wherein the Hammett parameter is between −0.5 and 1.0.

### Claim 9 (depends on 7)

The composition of claim 7, wherein the work function is between 3.0 eV and 6.0 eV.

### Claim 10 (depends on 1)

The composition of claim 1, wherein:
the composition catalyzes the hydrogen evolution reaction (HER), and
the composition generates a HER catalytic current density of at least 10 mA/cm2 when provided with an overpotential of less than 1000 mV.

### Claim 11

A composition comprising:
MoS2 in a form of at least one of a particle or a sheet; and
a ligand covalently bound to the MoS2, wherein:
the ligand comprises at least one of 3,5-Cl2Ph, p-BrPh, or p-(CH3CH2)2NPh, where Ph is a phenyl ring,
the MoS2 is it least partially in a 1T crystalline phase,
the form has a characteristic length between 5.0 nm and 50,000 nm,
the composition is characterized by a Hammett parameter between −0.5 and 1.0,
the composition catalyzes the hydrogen evolution reaction (HER), and
the composition generates a HER catalytic current density of about 10 mA/cm2 when provided with an overpotential of less than 1000 mV.