Journal article
Scalable, Highly Conductive, and Micropatternable MXene Films for Enhanced Electromagnetic Interference Shielding
Matter, v 3(2), pp 546-557
05 Aug 2020
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Two-dimensional transition metal carbides and nitrides (MXenes) have accumulated tremendous interest recently due to their high conductivity and excellent figures of merit in electromagnetic interference shielding and other applications. Large-area freestanding films of MXenes are important for versatility in application; however, alternative processing methods are needed for large-scale production. In this work, we demonstrate fabrication of Ti3C2Tx MXene freestanding films through drop-casting onto hydrophobic plastic substrates. Freestanding MXene films prepared using the drop-casting method can be fabricated in large areas (>125 cm2) and thicknesses (23.2 μm), and have smooth surfaces (14 nm RMS roughness) while maintaining high electrical conductivity (~7,000 S cm−1). Moreover, these MXene films can be micropatterned in three dimensions by processing on commercially available microstructured plastics, resulting in a 38% increase in normalized electromagnetic interference shielding efficiency compared with flat films. The results presented here suggest a scalable path toward creating MXene freestanding films for prototypes and industrialization.
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•Freestanding MXene films are prepared using hydrophobic substrates•These films have smooth surfaces with good alignment between flakes•Using pre-patterned substrates, micrometer-scale patterns can be made in the films•Patterned films show a ~38% boost in electromagnetic interference shielding efficiency
Electromagnetic interference (EMI) can cause disruptions in communication in critical applications, resulting in potentially disastrous consequences. As electronics become portable, miniaturized, and wearable, it has become clear that traditional EMI shields require large thicknesses to be effective, hampering design flexibility. MXenes have accumulated tremendous interest due to their high conductivity and excellent figures of merit in EMI shielding and other applications. In this work, we demonstrate fabrication of MXene freestanding films through drop-casting onto hydrophobic substrates. These films can be patterned in three dimensions simply by using a pre-patterned substrate, leading to a significant enhancement in the normalized EMI shielding efficiency. We suggest that these micropatterned MXene films, prepared using a method that is scalable and allows for high throughput, can be readily used in EMI shielding, energy storage, and optoelectronics applications.
Electromagnetic interference (EMI) can cause disruptions in communication in critical applications, resulting in potentially disastrous consequences. MXenes have accumulated tremendous interest due to their high conductivity and excellent figures of merit in EMI shielding and other applications. Here, freestanding Ti3C2Tx MXene films are prepared through drop-casting onto hydrophobic plastic substrates. By drop-casting onto pre-patterned plastics, films can be patterned with macro- and microscopic features resulting in significant enhancement to EMI shielding properties.
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Details
- Title
- Scalable, Highly Conductive, and Micropatternable MXene Films for Enhanced Electromagnetic Interference Shielding
- Creators
- Jason Lipton - Department of Chemical and Biomolecular Engineering, Tandon School of Engineering, New York University, Brooklyn, NY 11201, USAJason A Röhr - Department of Chemical and Biomolecular Engineering, Tandon School of Engineering, New York University, Brooklyn, NY 11201, USAVi Dang - Department of Chemical and Biomolecular Engineering, Tandon School of Engineering, New York University, Brooklyn, NY 11201, USAAdam Goad - Department of Materials Science and Engineering and A. J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA 19104, USAKathleen Maleski - Department of Materials Science and Engineering and A. J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA 19104, USAFrancesco Lavini - Department of Chemical and Biomolecular Engineering, Tandon School of Engineering, New York University, Brooklyn, NY 11201, USAMeikang Han - Department of Materials Science and Engineering and A. J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA 19104, USAEsther H.R Tsai - Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY 11973, USAGuo-Ming Weng - Department of Chemical and Biomolecular Engineering, Tandon School of Engineering, New York University, Brooklyn, NY 11201, USAJaemin Kong - Department of Chemical and Biomolecular Engineering, Tandon School of Engineering, New York University, Brooklyn, NY 11201, USAElisa Riedo - Department of Chemical and Biomolecular Engineering, Tandon School of Engineering, New York University, Brooklyn, NY 11201, USAYury Gogotsi - Department of Materials Science and Engineering and A. J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA 19104, USAAndré D Taylor - Department of Chemical and Biomolecular Engineering, Tandon School of Engineering, New York University, Brooklyn, NY 11201, USA
- Publication Details
- Matter, v 3(2), pp 546-557
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering; A.J. Drexel Nanomaterials Institute
- Web of Science ID
- WOS:000555887800006
- Scopus ID
- 2-s2.0-85087937591
- Other Identifier
- 991014969853804721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary