Effect of Metal Ion Intercalation on the Structure of MXene and Water Dynamics on its Internal Surfaces

MXenes are a recently discovered class of 2D materials with an excellent potential for energy storage applications. Because MXene surfaces are hydrophilic and attractive interaction forces between the layers are relatively weak, water molecules can spontaneously intercalate at ambient humidity and s...

Full description

Saved in:
Bibliographic Details
Published in:ACS applied materials & interfaces 2016-04, Vol.8 (14), p.8859-8863
Main Authors: Osti, Naresh C, Naguib, Michael, Ostadhossein, Alireza, Xie, Yu, Kent, Paul R. C, Dyatkin, Boris, Rother, Gernot, Heller, William T, van Duin, Adri C. T, Gogotsi, Yury, Mamontov, Eugene
Format: Article
Language:English
Subjects:
intercalation
MATERIALS SCIENCE
MXenes
quasi-elastic neutron scattering
ReaxFF simulation
water diffusion
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:MXenes are a recently discovered class of 2D materials with an excellent potential for energy storage applications. Because MXene surfaces are hydrophilic and attractive interaction forces between the layers are relatively weak, water molecules can spontaneously intercalate at ambient humidity and significantly influence the key properties of this 2D material. Using complementary X-ray and neutron scattering techniques, we demonstrate that intercalation with potassium cations significantly improves structural homogeneity and water stability in MXenes. In agreement with molecular dynamics simulations, intercalated potassium ions reduce the water self-diffusion coefficient by 2 orders of magnitude, suggesting greater stability of hydrated MXene against changing environmental conditions.
ISSN:1944-8244
1944-8252
DOI:10.1021/acsami.6b01490