%O This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
%D 2013
%V 4
%J Nature Communications
%A O Mashtalir
%A M Naguib
%A VN Mochalin
%A Y Dall'Agnese
%A M Heon
%A MW Barsoum
%A Y Gogotsi
%L discovery10076108
%T Intercalation and delamination of layered carbides and carbonitrides
%K Molecular dynamics, Two-dimensional materials
%X 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.