US 12,322,800 B2
Two-dimensional, ordered, double transition metals carbides having a nominal unit cell composition m′2M″NXN+1
Michel W Barsoum, Moorestown, NJ (US); Babak Anasori, Norristown, PA (US); and Yury Gogotsi, Warminster, PA (US)
Assigned to Drexel University, Philadelphia, PA (US)
Filed by Drexel University, Philadelphia, PA (US)
Filed on Apr. 5, 2022, as Appl. No. 17/713,340.
Application 17/713,340 is a continuation of application No. 16/894,056, filed on Jun. 5, 2020, granted, now 11,411,218.
Application 16/894,056 is a continuation of application No. 15/567,777, granted, now 10,720,644, issued on Jul. 21, 2020, previously published as PCT/US2016/028354, filed on Apr. 20, 2016.
Claims priority of provisional application 62/149,890, filed on Apr. 20, 2015.
Prior Publication US 2022/0231294 A1, Jul. 21, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 4/58 (2010.01); C01B 21/06 (2006.01); C01B 32/90 (2017.01); C01B 32/907 (2017.01); C30B 7/02 (2006.01); C30B 29/36 (2006.01); C30B 29/38 (2006.01); C30B 29/60 (2006.01); C30B 29/68 (2006.01); H01M 10/0525 (2010.01)
CPC H01M 4/58 (2013.01) [C01B 21/0602 (2013.01); C01B 32/90 (2017.08); C01B 32/907 (2017.08); C30B 7/02 (2013.01); C30B 29/36 (2013.01); C30B 29/38 (2013.01); C30B 29/60 (2013.01); C30B 29/68 (2013.01); H01M 10/0525 (2013.01); C01P 2002/20 (2013.01); C01P 2002/70 (2013.01); C01P 2002/85 (2013.01); C01P 2006/40 (2013.01)] 20 Claims
OG exemplary drawing
 
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′2M″nXn+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.