Granted Patent
B2
US 12,322,800 · App. 17/713,340 · Granted Jun 3, 2025
Two-dimensional, ordered, double transition metals carbides having a nominal unit cell composition m′2M″NXN+1
Inventors:
Michel W Barsoum (Moorestown, NJ); Babak Anasori (Norristown, PA); Yury Gogotsi (Warminster, PA)
Assignee:
Drexel University
H01M4/58C01B21/0602C01B32/90C01B32/907C30B7/02C30B29/36C30B29/38C30B29/60C30B29/68H01M10/0525C01P2002/20C01P2002/70C01P2002/85C01P2006/40
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Abstract
The present disclosure is directed to compositions comprising at least one layer having first and second surfaces, each layer comprising: a substantially two-dimensional array of crystal cells, each crystal cell having an empirical formula of M′ 2 M″nX n+1 , such that each X is positioned within an octahedral array of M′ and M″; wherein M′ and M″ each comprise different Group 11113, WE, VB, or VIB metals; each X is C, N, or a combination thereof; n=1 or 2; and wherein the M′ atoms are substantially present as two-dimensional outer arrays of atoms within the two-dimensional array of crystal cells; the M″ atoms are substantially present as two-dimensional inner arrays of atoms within the two-dimensional array of crystal cells; and the two dimensional inner arrays of M″ atoms are sandwiched between the two-dimensional outer arrays of M′ atoms within the two-dimensional army of crystal cells.
Claims (37)
1. A crystalline composition, comprising:
at least one layer having first and second surfaces,
each layer comprising:
a substantially two-dimensional array of crystal cells,
each crystal cell having an empirical formula of M′ 2 M″ n X n+1 , such that each X is positioned within an octahedral array of M′ and M″;
wherein M′ and M″ each comprise different Group IIIB, IVB, VB, or VIB metals;
each X is C, N, or a combination thereof;
n=1 or 2; and wherein
the M′ atoms are substantially present as two-dimensional outer arrays of atoms within the two-dimensional array of crystal cells;
the M″ atoms are substantially present as two-dimensional inner arrays of atoms within the two-dimensional array of crystal cells; and
the two-dimensional inner arrays of M″ atoms are sandwiched between the two-dimensional outer arrays of M′ atoms within the two-dimensional array of crystal cells, and wherein at least one or more of:
(a) n=1 and the layer has a thickness of from about 0.3 to about 0.7 nm,
(b) n=2 and the layer has a thickness of from about 0.6 to about 0.9 nm,
(c) a surface of the layer comprises a coating having a pendant moiety which is linked to the surface by a N, O, or S atom,
(d) the composition exhibits an optical transparency at at least one wavelength in a range of about 250 nm to about 850 nm in a range of from about 0% to at least about 95%,
(e) the composition further comprises a polymer,
(f) the layer has an aspect ratio of from about 1:10 to about 10:1, or
(g) the composition further comprises a cation intercalated therein.
2. The composition of claim 1 , wherein n=1 and the layer has a thickness of from about 0.3 to about 0.7 nm.
3. The composition of claim 1 , wherein n=2 and the layer has a thickness of from about 0.6 to about 0.9 nm.
4. The composition of claim 1 , wherein a surface of the layer comprises a coating having a pendant moiety which is linked to the surface by a N, O, or S atom, and wherein the coating comprises at least one hydroxide, alkoxide, carboxylate, amine, amide, or thiol.
5. The composition of claim 1 , wherein a surface of the layer comprises a coating having a pendant moiety which is linked to the surface by an N, O, or S atom, and wherein the pendant moiety comprises an organic moiety.
6. The composition of claim 5 , wherein the organic moiety is saturated.
7. The composition of claim 5 , wherein the organic moiety is unsaturated.
8. The composition of claim 5 , wherein the organic moiety is aromatic.
9. The composition of claim 1 , wherein the composition comprises a polymer and wherein the polymer comprises a thermoset, a thermoplastic, an elastomer, or any combination thereof.
10. The composition of claim 9 , wherein the polymer comprises an aromatic or heteroaromatic moiety.
11. The composition of claim 1 , wherein the composition comprises a polymer and wherein the polymer comprises polyester, polyamide, polyethylene, polypropylene, polyethylenenaphthalate (PEN), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyether etherketone (PEEK), polyamide, polyaryletherketone (PAEK), polyethersulfone (PES), polyethylenenimine (PEI), poly (p-phenylene sulfide) (PPS), polyvinyl chloride (PVC), a fluorinated or perfluorinated polymer, polyvinylidene difluoride (PVDF), or a polyvinyl fluoride.
12. The composition of claim 1 , wherein the composition comprises a polymer and wherein the polymer is a liquid crystal polymer.
13. The composition of claim 1 , wherein the composite exhibits an optical transparency at at least one wavelength in a range of about 250 nm to about 850 nm in a range of from about 50% to at least about 95%.
14. The composition of claim 1 , wherein the composition further comprises a cation intercalated therein and wherein the cation comprises an alkali metal cation.
15. The composition of claim 14 , wherein the alkali metal comprises lithium.
16. The composition of claim 1 , further comprising an alkaline aqueous medium.
17. The composition of claim 1 , further comprising an acidic aqueous medium.
18. A method, comprising contacting a composition according to claim 1 with a cation and a aqueous medium under conditions sufficient to effect intercalation of the cation into the composition.
19. The method of claim 18 , wherein the aqueous medium is acidic.
20. The method of claim 18 , wherein the aqueous medium is alkaline.
Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Apr 11, 2022
From: BARSOUM, MICHEL W.; ANASORI, BABAK; GOGOTSI, YURY
To: DREXEL UNIVERSITY
Reel/Frame 059559/0066 →
Continuity (4)
Continuation
15567777
Provisional Application
62149890
· Apr 20, 2015
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