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Intercalation and delamination of layered carbides and carbonitrides
Journal article   Open access   Peer reviewed

Intercalation and delamination of layered carbides and carbonitrides

Olha Mashtalir, Michael Naguib, Vadym N Mochalin, Yohan Dall'Agnese, Min Heon, Michel W Barsoum and Yury Gogotsi
Nature communications, v 4(1), pp 1716-1716
2013
DOI: https://doi.org/10.1038/ncomms2664
PMID: 23591883
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https://doi.org/10.1038/ncomms2664View
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Abstract

Intercalation and delamination of two-dimensional solids in many cases is a requisite step for exploiting their unique properties. Herein we report on the intercalation of two-dimensional Ti3C2, Ti3CN and TiNbC-so called MXenes. Intercalation of hydrazine, and its co-intercalation with N,N-dimethylformamide, resulted in increases of the c-lattice parameters of surface functionalized f-Ti3C2, from 19.5 to 25.48 and 26.8 Å, respectively. Urea is also intercalated into f-Ti3C2. Molecular dynamics simulations suggest that a hydrazine monolayer intercalates between f-Ti3C2 layers. Hydrazine is also intercalated into f-Ti3CN and f-TiNbC. When dimethyl sulphoxide is intercalated into f-Ti3C2, followed by sonication in water, the f-Ti3C2 is delaminated forming a stable colloidal solution that is in turn filtered to produce MXene 'paper'. The latter shows excellent Li-ion capacity at extremely high charging rates.

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Web of Science research areas
Chemistry, Physical
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