Mechanically strong and electrically conductive multilayer MXene nanocomposites

Jason Lipton, Guo Ming Weng, Mohamed Alhabeb, Kathleen Maleski, Francisco Antonio, Jaemin Kong, Yury Gogotsi, Andre D. Taylor

Research output: Contribution to journalArticlepeer-review


Polymer nanocomposites offer the opportunity to bridge properties of nanomaterials to the macroscale. In this work, layer-by-layer (LbL) assembly is used to demonstrate nanocomposites of 2D titanium carbide nanosheets (MXene) and clay nanoplatelets (montmorillonite) to fabricate freestanding thin films with unique multifunctional properties. These thin films can be tuned by adjusting the thickness to exhibit a tensile strength of 138 MPa-225 MPa, EMI specific shielding effectiveness normalized to thickness and density up to 24550 dB cm2 g-1, and sheet resistance from 855 Ω sq-1-3.27 kΩ sq-1 (corresponding to a range of conductivity from 53 S m-1 to 125 S m-1). This composite is the strongest MXene-based LbL film prepared to date, in part due to the nacre-like brick-and-mortar structure. Ultra-strong, multifunctional films of this nature are desirable for many applications ranging from membranes, to structural and multifunctional composites, energy harvesting and storage, and materials for aerospace.

Original languageEnglish (US)
Pages (from-to)20295-20300
Number of pages6
Issue number42
StatePublished - Nov 14 2019

ASJC Scopus subject areas

  • General Materials Science


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