A5028539021- Electromagnetic wave absorption materials
- MXene and MAX Phase Materials
- Advanced Antenna and Metasurface Technologies
- Metamaterials and Metasurfaces Applications
- 2D Materials and Applications
- Advanced Memory and Neural Computing
- Antenna Design and Analysis
- Dielectric materials and actuators
- Graphene research and applications
- Supercapacitor Materials and Fabrication
- Energy Harvesting in Wireless Networks
- Thermal Radiation and Cooling Technologies
- Microwave Dielectric Ceramics Synthesis
- Thermal properties of materials
- ZnO doping and properties
- Gas Sensing Nanomaterials and Sensors
- Advanced ceramic materials synthesis
- Electrohydrodynamics and Fluid Dynamics
- Laser-Ablation Synthesis of Nanoparticles
- Silicone and Siloxane Chemistry
- Semiconductor materials and devices
- Boron and Carbon Nanomaterials Research
- Electronic Packaging and Soldering Technologies
- Solid-state spectroscopy and crystallography
- Polymer composites and self-healing
Fudan University
2022-2024
Drexel University
2019-2023
Philadelphia University
2020
Northwestern Polytechnical University
2014-2018
Division of Materials Research
2018
New York University Press
2018
Cambridge University Press
2018
Nanyang Technological University
2018
Aerospace Research Institute of Materials and Processing Technology
2018
China XD Group (China)
2016
Electromagnetic (EM) absorbing and shielding composites with tunable behaviors based on Ti3C2 MXenes are fabricated via HF etching annealing treatment. Localized sandwich structure without sacrificing the original layered morphology is realized, which responsible for enhancement of EM capability in X-band. The composite 50 wt % annealed exhibits a minimum reflection loss -48.4 dB at 11.6 GHz, because formation TiO2 nanocrystals amorphous carbon. Moreover, superior effectiveness high...
Abstract Free‐standing films that display high strength and electrical conductivity are critical for flexible electronics, such as electromagnetic interference (EMI) shielding coatings current collectors batteries supercapacitors. 2D Ti 3 C 2 T x flakes ideal candidates making conductive due to their metallic conductivity. It is, however, challenging transfer those outstanding properties of single MXene macroscale a result the small flake size relatively poor alignment occurs during...
New ultrathin and multifunctional electromagnetic interference (EMI) shielding materials are required for protecting electronics against pollution in the fifth-generation networks Internet of Things era. Micrometer-thin Ti3C2Tx MXene films have shown best EMI performance among synthetic so far. Yet, effects elemental composition, layer structure, transition-metal arrangement on properties MXenes not been explored, despite fact that more than 30 different reported, many possible. Here, we...
Abstract Electromagnetic wave (EM) absorption materials with broader effective bandwidth (EAB), lightweight, and thinness characteristics are highly desirable in areas of wearable device portable electronics. However, there still many obstacles to simultaneously satisfy the above critical requirements required by new high‐performance EM materials. Herein, for first time, Ti 3 C 2 T X MXenes selected as dielectric mediator prepare reduced graphene oxide (RGO)/Ti hybrids foam hollow core–shell...
Graphene-wrapped ZnO hollow spheres were synthesized by a two-step process, which combined hydrothermal reaction with surface modification. The experimental results show that reduced graphene oxide sheets adhere entirely to the of consisting nanoparticles. unique structure effectively decreases density composite without sacrificing contact between and Different mass ratios mixed in paraffin wax matrix (50 wt%) prepared investigate electromagnetic wave absorption properties X-band region....
In this work, mesoporous carbon hollow microspheres (PCHMs) with designable shell and interior void are constructed by a facile in situ stöber templating approach pyrolysis-etching process. The PCHMs characterized scanning electron microscopy, transmission X-ray photoelectron spectra, Raman spectroscopy, nitrogen adsorption desorption system. A uniform (pore size 4.7 nm) thickness of 55 nm cavity 345 is realized. composite paraffin mixed 20 wt % exhibits minimum reflection coefficient...
Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>MXenes modified with<italic>in situ</italic>grown carbon nanotubes (CNTs) are fabricated<italic>via</italic>a simple catalytic chemical vapor deposition (CVD) process.
Microwave absorbers with layered structures that can provide abundant interfaces are highly desirable for enhancing electromagnetic absorbing capability and decreasing the thickness. The atomically thin layers of two-dimensional (2D) transition-metal carbides (MXenes) make them a convenient precursor synthesis other 2D structures. Here, laminated carbon/TiO2 hybrid materials composed well-aligned carbon sheets embedded TiO2 nanoparticles were synthesized showed excellent microwave...
Three-dimensional (3D) flexible foams consisting of reduced graphene oxides (rGO) and in situ grown SiC nanowires (NWs) were prepared using freeze-drying carbothermal reduction processes. By means incorporating into rGO foams, both the thermostability electromagnetic absorption composites improved. It was demonstrated that rGO/SiC NW thermostable beyond ∼630 °C (90% weight retention air atmosphere). As expected, poly(dimethylsiloxane) matrix achieved effective entire X-band (8.2-12.4 GHz)...
Lightweight materials with high electrical conductivity and robust mechanical properties are highly desirable for electromagnetic interference (EMI) shielding in modern portable integrated electronics. Herein, a three-dimensional (3D) porous Ti3C2Tx/carbon nanotube (CNT) hybrid aerogel was fabricated via bidirectional freezing method lightweight EMI application. The synergism of the lamellar structure MXene/CNT aerogels contributed extensively to their excellent (9.43 S cm-1) superior...
Ti3C2Tx MXene is an attractive two-dimensional (2D) material for a wide variety of applications; however, measured properties vary widely from study to study. A potential factor the property differences relates variability in MAX phase precursors. To illustrate this, Ti3AlC2, precursor MXene, was synthesized using three carbon sources (graphite, lampblack, and titanium carbide (TiC)) at 1650 °C 2 h. Thermal analysis utilized examine reaction mechanism, indicating that experience different...
Abstract Lightweight and mechanically flexible materials that can provide efficient electromagnetic interference (EMI) shielding are highly desirable for protecting portable smart electronic devices against pollution. Here, the authors report a tunable design of three‐dimensional (3D) porous aerogel structure made 2D transition metal carbides carbonitride (MXene) with long‐range order aligned lamellar architecture EMI shielding. Bidirectional freeze‐casting MXene colloidal solutions is used...
Alloying is a long-established strategy to tailor properties of metals for specific applications, thus retaining or enhancing the principal elemental characteristics while offering additional functionality from added elements. We propose similar approach control two-dimensional transition metal carbides known as MXenes. MXenes (Mn+1Xn) have two sites compositional variation: substitution on both (M) and carbon/nitrogen (X) presents promising routes tailoring chemical, optical, electronic,...
Two-dimensional (2D) few-layered Ti3C2TX MXene (f-Ti3C2TX) has been proved to be one of the most promising electromagnetic interference (EMI) materials, but its (EM) absorption properties and loss mechanism have not studied so far. Herein, for first time, ordered lamellar f-Ti3C2TX/SiCnws hybrid foams with ultralow density are synthesized by a combination self-assembly bidirectional freezing processes. The freestanding exhibit excellent EM superior current foam-based counterparts. effective...
Herein, Ti<sub>2</sub>CT<sub>x</sub>MXene and its derivatives with various heterogeneous structures were constructed<italic>via</italic>etching a facile oxidation treatment.
Highly integrated, flexible, and ultrathin wireless communication components are in significant demand due to the explosive growth of portable wearable electronic devices fifth-generation (5G) network era, but only conventional metals meet requirements for emerging radio-frequency (RF) so far. Here, it is reported on Ti