Green Strategy for a Large-Format, Superhard, and Insulated Electromagnetic Wave Absorber Inspired by a Natural Feature of a Conch Shell

ACS Nano, Journal Year: 2024, Volume and Issue: 18(43), P. 29457 - 29468

Published: Oct. 18, 2024

Due to the intensification of electromagnetic pollution and energy shortages, there is an urgent need for multifunctional composites that can absorb waves provide insulation. However, developing low-cost wave-absorbing are lightweight, high strength, heat-insulating, large-format special environments remains challenging. Inspired by conch shell, this article proposes a green strategy hydration recrystallization self-assembly. Highly biologically active hydroxyapatite (HAP) was used lock in free water prevent porous carbon fibers from absorbing large amount water. Meanwhile, HAP underwent ion exchange recombined with hydrated crystals magnesium oxychloride form gelatinous HAP-5 phase crystal. The cementitious crystal interwoven interlocked support skeleton metal Ni powder shell (Bio-CSC) multiple interfaces via electrostatic adsorption complexation. This utilized inorganic substances as bridges uniformly disperse conductive materials such construct network enriched interface polarization. prepared Bio-CSC composed heterogeneous lightweight specific strength increase 300%. It also provided excellent thermal insulation wave absorption. Its conductivity 0.071 W·m-1·k-1, lowest RLmin value -21.88 dB, matching thickness only 1.2 mm. study overcame limitations traditional absorption magnetism single function may be fields building conservation safety.

Language: Английский

---

Electrically Insulating Electromagnetic Interference Shielding Materials: A Perspective

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: July 17, 2024

Abstract Electromagnetic interference (EMI) shielding is critical in electronic applications. Over the past decades, numerous high‐performance EMI shields are developed using electrically conducting materials. However, from an application aspect, materials, integral to increasingly complex systems, often need be insulating prevent short‐circuiting and enhance overall reliability flexibility. This requirement has frequently been overlooked earlier research on paper summarizes representative advancements design of innovative materials that minimize eliminate reliance electrical conductivity. Insights into future prospects directions for development also provided, with aim pioneering both intrinsically effective at shielding.

Language: Английский

---

Subwavelength-scale graphene aerogel powders for efficient microwave absorption composites with improved mechanical strength

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 159118 - 159118

Published: Dec. 1, 2024

Language: Английский

---

Charge-transfer States Disclosed by First-Principles Calculations in Core-Shell Carbon Fiber@Ni and Exploration of Its Microscopic Electromagnetic Loss Mechanism

Carbon, Journal Year: 2024, Volume and Issue: unknown, P. 119931 - 119931

Published: Dec. 1, 2024

Language: Английский

---

Heterogeneous Interface Engineering of 1D Hybrid Nanobelts Decorated with Mo₂N–Mo_xC Nanoparticles for Boosting Microwave Absorption

ACS Applied Nano Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 23, 2025

Language: Английский

---

3D-printed sodium alginate/carbon nanotube/graphene porous scaffolds crosslinked with Ca2+ for high-performance electromagnetic shielding and Joule heating

Carbohydrate Polymers, Journal Year: 2024, Volume and Issue: 352, P. 123204 - 123204

Published: Dec. 30, 2024

Language: Английский

---