Intercalation and delamination of layered carbides and carbonitrides

Intercalation and delamination of layered carbides and carbonitrides

16 Apr 2013 | Olha Mashtalir, Michael Naguib, Vadym N. Mochalin, Yohan Dall'Agnese, Min Heon, Michel W. Barsoum, Yury Gogotsi
The article reports on the intercalation and delamination of two-dimensional MXenes, specifically Ti3C2, T3CN, and TiNbC. Hydrazine and N,N-dimethylformamide (DMF) were found to increase the c-lattice parameters of surface-functionalized f-Ti3C2, with hydrazine monolayers intercalating between layers. Urea also intercalates into f-Ti3C2 and f-Ti3CN. Dimethyl sulfoxide (DMSO) intercalation followed by sonication in water results in the delamination of f-Ti3C2 into stable colloidal solutions, which can be filtered to produce MXene 'paper' with excellent Li-ion capacity at high charging rates. Molecular dynamics simulations support these findings, showing that hydrazine monolayers form between f-Ti3C2 layers. The study highlights the potential of MXenes for various applications, including energy storage and catalysis.The article reports on the intercalation and delamination of two-dimensional MXenes, specifically Ti3C2, T3CN, and TiNbC. Hydrazine and N,N-dimethylformamide (DMF) were found to increase the c-lattice parameters of surface-functionalized f-Ti3C2, with hydrazine monolayers intercalating between layers. Urea also intercalates into f-Ti3C2 and f-Ti3CN. Dimethyl sulfoxide (DMSO) intercalation followed by sonication in water results in the delamination of f-Ti3C2 into stable colloidal solutions, which can be filtered to produce MXene 'paper' with excellent Li-ion capacity at high charging rates. Molecular dynamics simulations support these findings, showing that hydrazine monolayers form between f-Ti3C2 layers. The study highlights the potential of MXenes for various applications, including energy storage and catalysis.
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[slides and audio] Intercalation and delamination of layered carbides and carbonitrides