Electromagnetic absorption materials: Current progress and new frontiers

Progress in Materials Science, Journal Year: 2022, Volume and Issue: 127, P. 100946 - 100946

Published: March 17, 2022

Language: Английский

---

Biomass-Derived Carbon Heterostructures Enable Environmentally Adaptive Wideband Electromagnetic Wave Absorbers

Nano-Micro Letters, Journal Year: 2021, Volume and Issue: 14(1)

Published: Dec. 4, 2021

Abstract Although advances in wireless technologies such as miniature and wearable electronics have improved the quality of our lives, ubiquitous use comes at expense increased exposure to electromagnetic (EM) radiation. Up date, extensive efforts been made develop high-performance EM absorbers based on synthetic materials. However, design an absorber with both exceptional dissipation ability good environmental adaptability remains a substantial challenge. Here, we report class carbon heterostructures via hierarchical assembly graphitized lignocellulose derived from bamboo. Specifically, assemblies nanofibers nanosheets behave nanometer-sized antenna, which results enhancement conductive loss. In addition, show that composition cellulose lignin precursor significantly influences shape formation covalent bonds, affect dielectric response-ability surface hydrophobicity (the apparent contact angle water can reach 135°). Finally, demonstrate obtained heterostructure maintains its wideband absorption effective frequency ranging 12.5 16.7 GHz under conditions simulate real-world environment, including rainwater slightly acidic/alkaline pH values. Overall, reported this work provide new principles for synthesis find practical applications environments.

Language: Английский

---

A mini-review of MXene porous films: Preparation, mechanism and application

Journal of Material Science and Technology, Journal Year: 2021, Volume and Issue: 103, P. 42 - 49

Published: Aug. 27, 2021

Language: Английский

---

Layered 3D structure derived from MXene/magnetic carbon nanotubes for ultra-broadband electromagnetic wave absorption

Chemical Engineering Journal, Journal Year: 2021, Volume and Issue: 431, P. 133919 - 133919

Published: Dec. 3, 2021

Language: Английский

---

2D MXenes for Fire Retardancy and Fire‐Warning Applications: Promises and Prospects

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 33(9)

Published: Dec. 16, 2022

Abstract Frequent fire disasters have caused massive impacts to the environment, human beings, and economy. MXene has recently been intensively researched as potential flame retardants provide passive protection for other materials via its physical barrier catalyzing carbonization effects. In parallel, also demonstrated a great promise creating early warning sensors, which is an emerging field that active response through thermoelectric effect. This makes it possible integrate retardancy into one MXene‐based system on demand. However, fulfilling these promises needs more research. Herein, overview of flame‐retardant next‐generation smart materials/sensors based derivatives provided. study reviews their conceptual design, characterization, modification principles, performances, applications, mechanisms. A discussion challenges need be solved future practical applications opportunities presented.

Language: Английский

---

A review on MXene and its’ composites for electromagnetic interference (EMI) shielding applications

Carbon, Journal Year: 2023, Volume and Issue: 208, P. 170 - 190

Published: March 23, 2023

Language: Английский

---

Recent progress of perovskite oxides and their hybrids for electromagnetic wave absorption: a mini-review

Advanced Composites and Hybrid Materials, Journal Year: 2022, Volume and Issue: 5(3), P. 2440 - 2460

Published: April 25, 2022

Language: Английский

---

Hyperelastic, Robust, Fire‐Safe Multifunctional MXene Aerogels with Unprecedented Electromagnetic Interference Shielding Efficiency

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(49)

Published: Sept. 5, 2023

Abstract MXene aerogels have shown great potential for many important functional applications, in particular electromagnetic interference (EMI) shielding. However, it has been a grand challenge to create mechanically hyperelastic, air‐stable, and durable enabling effective EMI protection at low concentrations due the difficulties achieving tailorable porous structures, excellent mechanical elasticity, desired antioxidation capabilities of air. Here, facile strategy fabricating composite by co‐assembling cellulose nanofibers during freeze‐drying followed surface encapsulation with fire‐retardant thermoplastic polyurethane (TPU) is reported. Because maximum utilization pore structures MXene, conductive loss enhanced multiple internal reflections, as‐prepared aerogel 3.14 wt% exhibits an exceptionally high shielding effectiveness 93.5 dB, ultra‐high efficiency 2977.71 dB g −1 , tripling values previous works. Owing presence hydrogen bonding TPU elastomer, hyperelastic feature additional strength, stability, superior durability, fire safety. This study provides creating multifunctional applications protection, wearable devices, thermal management, pressure sensing, intelligent monitoring.

Language: Английский

---

Wearable Janus‐Type Film with Integrated All‐Season Active/Passive Thermal Management, Thermal Camouflage, and Ultra‐High Electromagnetic Shielding Efficiency Tunable by Origami Process

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(18)

Published: Feb. 8, 2023

Abstract Multifunctional films with integrated temperature adjustment, electromagnetic interference (EMI) shielding, and thermal camouflage are remarkably desirable for wearable products. Herein, a novel Janus‐type multifunctional ultra‐flexible film is fabricated via continuous electrospinning followed by spraying. Interestingly, in the polyvinyl alcohol (PVA)/phase change capsules (PCC) layer (P 1 ), PCC strung on PVA fibers to form stable “candied haws stick” structure that obviates slipping or falling off. The sufficient melting enthalpy (141.4 J g −1 ) guarantees its thermoregulation capability. Simultaneously, high mid‐IR emissivity (90.15%) endows radiative cooling properties (reducing 10.13 °C). Mechanical strength significantly improved superimposing polylactic acid (PLA) 2 surface. By spraying thin MXene PLA surface of P film, obtained (MXene/P MP endowed satisfactory low‐voltage heating, photo‐thermal superior performance, achieving all‐season comfort. Impressively, flexible achieves enhanced EMI shielding effect from 50.3 87.8 dB through simple origami process, which simplifies manufacturing process high‐performance materials. In brief, an attractive candidate future products personalized management anti‐electromagnetic radiation.

Language: Английский

---

N-doped MXene derived from chitosan for the highly effective electrochemical properties as supercapacitor

Advanced Composites and Hybrid Materials, Journal Year: 2021, Volume and Issue: 5(1), P. 356 - 369

Published: Nov. 19, 2021

Language: Английский

---