IP Library › Granted Patent US 12,606,712
Granted Patent B2
US 12,606,712 · App. 17/767,083 · Granted Apr 21, 2026

MXene compositions featuring five atomic layers

Inventors: Yury Gogotsi (Warminster, PA); Christopher Eugene Shuck (Philadelphia, PA); Babak Anasori (Fishers, IN); Grayson Brouse Deysher (San Diego, CA)
Assignee: Drexel University
C09D5/24C09D1/00
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Quick Facts
Patent No.
US 12,606,712
App. No.
17/767,083
Granted
Apr 21, 2026
Kind
B2
Abstract

Provided are 5-layered MXene materials having the formulas M 5 X 4 T x ; (M′aM″b)X 4 T x (where a+b=5); and (M′ a M″ b ) 5 X 4 T x (where a+b=1). Also provided are related methods, compositions, and applications.

Claims (102)

1 . A composition, comprising:

(a) at least one layer having first and second surfaces, each layer described by a formula M 5 X 4 T x and comprising

a substantially two-dimensional array of crystal cells, each crystal cell having an empirical formula of M 5 X 4 , such that each X is positioned within an array of M,

wherein M is at least one Group IIIB, IVB, VB, or VIB metal or a lanthanide,

wherein X is C and/or N,

and

wherein at least one of the first surface and the second surface comprises surface terminations T x , the surface terminations independently comprising alkoxide, alkyl, carboxylate, halide, hydroxide, hydride, oxide, sub-oxide, nitride, sub-nitride, sulfonate, thiol, or any combination thereof; or

(b) at least one layer having first and second surfaces, each layer described by a formula (M′ a M″ b )X 4 T x and comprising

a substantially two-dimensional array of crystal cells, each crystal cell having an empirical formula of (M′ a M″ b )X 4 , such that each X is positioned within an array of M′ and M″,

wherein M′ and M″ are different Group IIIB, IVB, VB, or VIB metals,

wherein X is C and/or N,

wherein a+b=5, and

wherein at least one of the first surface and the second surface comprises surface terminations T x , the surface terminations independently comprising alkoxide, alkyl, carboxylate, halide, hydroxide, hydride, oxide, sub-oxide, nitride, sub-nitride, sulfonate, thiol, or any combination thereof, or

(c) at least one layer having first and second surfaces, each layer described by a formula (M′ a M″ b ) 5 X 4 T x and comprising

a substantially two-dimensional array of crystal cells, each crystal cell having an empirical formula of (M′ a M″ b ) 5 X 4 , such that each X is positioned within an array of M′ and M″,

wherein M′ and M″ are different Group IIIB, IVB, VB, or VIB metals,

wherein X is C and/or N,

wherein a+b=1, and

wherein at least one of the first surface and the second surface comprises surface terminations T x , the surface terminations independently comprising alkoxide, alkyl, carboxylate, halide, hydroxide, hydride, oxide, sub-oxide, nitride, sub-nitride, sulfonate, thiol, or any combination thereof.

2 . The composition of claim 1 , wherein the composition is characterized as a stacked structure comprising a plurality of the layers.

3 . A composition, comprising:

(a) at least one layer having first and second surfaces, each layer described by a formula M 5 X 4 T x and comprising

a substantially two-dimensional array of crystal cells, each crystal cell having an empirical formula of M 5 X 4 , such that each X is positioned within an array of M,

wherein M is at least one Group IIIB, IVB, VB, or VIB metal or a lanthanide,

wherein X is C and/or N,

wherein the composition is characterized as being a solid solution, and

wherein T x represents optionally present surface termination groups; or

(b) at least one layer having first and second surfaces, each layer described by a formula (M′ a M″ b )X 4 T x and comprising

a substantially two-dimensional array of crystal cells, each crystal cell having an empirical formula of (M′ a M″ b )X 4 , such that each X is positioned within an array of M′ and M″,

wherein M′ and M″ are different Group IIIB, IVB, VB, or VIB metals,

wherein X is C and/or N,

wherein a+b=5,

wherein the composition is characterized as being a solid solution, and

wherein T x represents optionally present surface termination groups, or

(c) at least one layer having first and second surfaces, each layer described by a formula (M′ a M″ b ) 5 X 4 T x and comprising

a substantially two-dimensional array of crystal cells, each crystal cell having an empirical formula of (M′ a M″ b ) 5 X 4 , such that each X is positioned within an array of M′ and M″,

wherein M′ and M″ are different Group IIIB, IVB, VB, or VIB metals,

wherein X is C and/or N,

wherein a+b=1,

wherein the composition is characterized as being a solid solution, and

wherein T x represents optionally present surface termination groups.

4 . A composition, comprising:

(a) at least one layer having first and second surfaces, each layer described by a formula M 5 X 4 T x and comprising

a substantially two-dimensional array of crystal cells, each crystal cell having an empirical formula of M 5 X 4 , such that each X is positioned within an array of M,

wherein M is at least one Group IIIB, IVB, VB, or VIB metal or a lanthanide,

wherein X is C and/or N,

wherein the layer is characterized as comprising 5 atomic layers of M, and

wherein T x represents optionally present surface termination groups.

5 . The composition of claim 4 , wherein the layer is characterized as comprising a twinned structure.

6 . A composition, comprising:

(a) at least one layer having first and second surfaces, each layer described by a formula M 5 X 4 T x and comprising

a substantially two-dimensional array of crystal cells, each crystal cell having an empirical formula of M 5 X 4 , such that each X is positioned within an array of M,

wherein M is at least one Group IIIB, IVB, VB, or VIB metal or a lanthanide,

wherein X is C and/or N,

wherein the composition is characterized as being in flake form, wherein the flake defines a cross-sectional dimension of greater than 1 micrometer, and

wherein T x represents optionally present surface termination groups; or

(b) at least one layer having first and second surfaces, each layer described by a formula (M′ a M″ b )X 4 T x and comprising

a substantially two-dimensional array of crystal cells, each crystal cell having an empirical formula of (M′ a M″ b )X 4 , such that each X is positioned within an array of M′ and M″,

wherein M′ and M″ are different Group IIIB, IVB, VB, or VIB metals,

wherein X is C and/or N,

wherein a+b=5,

wherein the composition is characterized as being in flake form, wherein the flake defines a cross-sectional dimension of greater than 1 micrometer, and

wherein T x represents optionally present surface termination groups, or

(c) at least one layer having first and second surfaces, each layer described by a formula (M′ a M″ b ) 5 X 4 T x and comprising

a substantially two-dimensional array of crystal cells, each crystal cell having an empirical formula of (M′ a M″ b ) 5 X 4 , such that each X is positioned within an array of M′ and M″,

wherein M′ and M″ are different Group IIIB, IVB, VB, or VIB metals,

wherein X is C and/or N,

wherein a+b=1,

wherein the composition is characterized as being in flake form, wherein the flake defines a cross-sectional dimension of greater than 1 micrometer, and

wherein T x represents optionally present surface termination groups.

7 . The composition of claim 6 , wherein the flake defines a cross-sectional dimension of from about 1 to about 10 micrometers.

8 . A composition, comprising:

(a) at least one layer having first and second surfaces, each layer described by a formula M 5 X 4 T x and comprising

a substantially two-dimensional array of crystal cells, each crystal cell having an empirical formula of M 5 X 4 , such that each X is positioned within an array of M,

wherein M is at least one Group IIIB, IVB, VB, or VIB metal or a lanthanide,

wherein X is C and/or N,

wherein a layer defines a thickness of at least about 1 nm, and

wherein T x represents optionally present surface termination groups; or

(b) at least one layer having first and second surfaces, each layer described by a formula (M′ a M″ b )X 4 T x and comprising

a substantially two-dimensional array of crystal cells, each crystal cell having an empirical formula of (M′ a M″ b )X 4 , such that each X is positioned within an array of M′ and M″,

wherein M′ and M″ are different Group IIIB, IVB, VB, or VIB metals,

wherein X is C and/or N,

wherein a+b=5,

wherein a layer defines a thickness of at least about 1 nm, and

wherein T x represents optionally present surface termination groups, or

(c) at least one layer having first and second surfaces, each layer described by a formula (M′ a M″ b ) 5 X 4 T x and comprising

a substantially two-dimensional array of crystal cells, each crystal cell having an empirical formula of (M′ a M″ b ) 5 X 4 , such that each X is positioned within an array of M′ and M″,

wherein M′ and M″ are different Group IIIB, IVB, VB, or VIB metals,

wherein X is C and/or N,

wherein a+b=1,

wherein a layer defines a thickness of at least about 1 nm, and

wherein T x represents optionally present surface termination groups.

9 . The composition of claim 8 , wherein a layer defines a thickness of from about 1 to about 2 nm.

10 . A component, the component comprising a composition according to claim 1 .

11 . The component of claim 10 , wherein the component is characterized as an optical component, an optomechanical component, a plasmonic component, a signal receiver, a signal transmitter, a fiber, a textile, a radiation shield, or any combination thereof.

12 . A component, the component comprising disposed thereon a coating, the coating comprising a composition according to claim 1 .

13 . A composition, the composition comprising a suspension of a composition according to claim 1 .

14 . A method, the method comprising synthesizing a composition according to claim 1 .

15 . A method, comprising removing the A-group element from a MAX phase material so as to form a product composition according to claim 1 .

16 . The method of claim 15 , further comprising delaminating layers of the product composition from one another.

17 . The method of claim 16 , further comprising forming a suspension of delaminated layers of the product composition.

18 . The method of claim 17 , further comprising forming a free-standing structure of the product composition.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 7, 2022
From: GOGOTSI, YURY; SHUCK, CHRISTOPHER EUGENE; DEYSHER, GRAYSON BROUSE
To: DREXEL UNIVERSITY
Reel/Frame 059527/0809 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 7, 2022
From: ANASORI, BABAK
To: DREXEL UNIVERSITY
Reel/Frame 059527/0900 →
Continuity (2)
Provisional Application 62913866 · Oct 11, 2019
Related Publication 20220363916A1 · Nov 17, 2022
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