Journal article
Colloidal Gelation in Liquid Metals Enables Functional Nanocomposites of 2D Metal Carbides (MXenes) and Lightweight Metals
ACS nano, v 13(11), pp 12415-12424
26 Nov 2019
PMID: 31560851
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Nanomaterials dispersed in different media, such as liquids or polymers, generate a variety of functional composites with synergistic properties. In this work, we discuss liquid metals as the nanomaterials' dispersion media. For example, 2D transition-metal carbides and nitrides (MXenes) can be efficiently dispersed in liquid Ga and lightweight alloys of Al, Mg, and Li. We show that the Lifshitz theory predicts strong van der Waals attraction between nanoscale objects interacting through liquid metals. However, a uniform distribution of MXenes in liquid metals can be achieved through colloidal gelation, where particles form self-supporting networks stable against macroscopic phase segregation. This network acts as a reinforcement boosting mechanical properties of the resulting metal-matrix composite. By choosing Mg-Li alloy as an example of ultralightweight metal matrix and Ti
C
T
MXene as a nanoscale reinforcement, we apply a liquid metal gelation technique to fabricate functional nanocomposites with an up to 57% increase in the specific yield strength without compromising the matrix alloy's plasticity. MXenes largely retain their phase and 2D morphology after processing in liquid Mg-Li alloy at 700 °C. The 2D morphology enables formation of a strong semicoherent interface between MXene and metal matrix, manifested by biaxial strain of the MXene lattice inside the metal matrix. This work expands applications for MXenes and shows the potential for developing MXene-reinforced metal matrix composites for structural alloys and other emerging applications with metal-MXene interfaces, such as batteries and supercapacitors.
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Details
- Title
- Colloidal Gelation in Liquid Metals Enables Functional Nanocomposites of 2D Metal Carbides (MXenes) and Lightweight Metals
- Creators
- Vladislav Kamysbayev - Department of Chemistry and James Franck Institute , University of Chicago , Chicago , Illinois 60637 , United StatesNicole M James - Department of Chemistry and James Franck Institute , University of Chicago , Chicago , Illinois 60637 , United StatesAlexander S Filatov - Department of Chemistry and James Franck Institute , University of Chicago , Chicago , Illinois 60637 , United StatesVishwas Srivastava - Department of Chemistry and James Franck Institute , University of Chicago , Chicago , Illinois 60637 , United StatesBabak Anasori - A. J. Drexel Nanomaterials Institute and Department of Materials Science and Engineering , Drexel University , Philadelphia , Pennsylvania 19104 , United StatesHeinrich M Jaeger - Department of Physics and James Franck Institute , University of Chicago , Chicago , Illinois 60637 , United StatesYury Gogotsi - A. J. Drexel Nanomaterials Institute and Department of Materials Science and Engineering , Drexel University , Philadelphia , Pennsylvania 19104 , United StatesDmitri V Talapin - Center for Nanoscale Materials , Argonne National Laboratory , Argonne , Illinois 60439 , United States
- Publication Details
- ACS nano, v 13(11), pp 12415-12424
- Publisher
- American Chemical Society; Washington, DC
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000500650000018
- Scopus ID
- 2-s2.0-85073834496
- Other Identifier
- 991014969879504721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology