Remarkably enhancing the microwave absorbing and electrical/thermal capabilities of Te@CuxTe1−x core-shell nanofibers via a Cu-doping strategy
- 1College of Chemistry and Material Sciences, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Key Laboratory of Advanced Catalysis and Adsorption Materials, Zhejiang Key Laboratory of Advanced Catalysis and Adsorption Materials, Zhejiang Normal University, Jinhua, 321004, P.R. China
- 2Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
Abstract
Bifunctional materials with high heat conduction and strong microwave absorption play a pivotal role in addressing the challenges of heat accumulation and signal crosstalk in modern devices. However, the design of such bifunctional materials is constrained by the incompatibility between thermal conductivity and microwave absorption. We tackle this challenge by employing a hydrothermal-microwave-assisted solvothermal method to construct Te@Cu x Te 1−x core-shell nanofibers (CSNFs) via a Cu-doping strategy. The multi-heterointerfaces of Te/CuTe, CuTe/Cu 2.74 Te 2 , and Cu 2.74 Te 2 /Cu 7 Te 4 in the CSNFs were controlled by adjusting the feeding ratio ( β = Cu²⁺/Te) to simultaneously enhance their thermal conduction and microwave absorption. Through Cu doping, a low work function (W f ) was achieved to attain high σ and Ohmic loss ( ϵ c′ ′ ). Besides, Te@Cu x Te 1−x multi-heterojunctions were formed to enhance interfacial polarization, and the active phonon frequency was extended with good phonon matching to improve thermal conduction. With 1.7 mm in thickness and 30 wt% in load, the CSNFs formed at β = 0.250 achieved a wide band (3.444 GHz/mm), strong absorption (-36.82 dB), and low RCS reduction (36 dB m 2 ), indicating their excellent near-field EM protection and far-field Radar wave stealth performance. Moreover, the Te@Cu x Te 1−x /TPU membrane exhibited high heat conductance (3.95 W/(m K)) under a small load (15 wt%), along with high strength (39.77 MPa) and good flexibility (elongation: 873%). Our research results demonstrate the great application potential of Te@Cu x Te 1−x CSNFs in the EM protecting and heat managing fields, providing theoretical guidance for further design of tellurium-based alloys as integrated materials with effective microwave absorption and thermal conduction.
Related
- Remarkably enhanced second harmonic generation in Janus HfXY (X, Y = O, S, Se, Te; X ≠ Y) monolayers
- Spotlighting rising researcher Alaa Darwesh: engineering smart nanoscaffolds for ocular therapy: merging cocrystal science with electrospun nanofibers
- Facile Nitrogen Doping of Electrospun Mesoporous Carbon Nanofibers via Urea Addition for Polysulfide-Confining Li-S Cathodes and Interlayers
- Surface-Modified Cellulose Nanofibers for Stabilization of Barite in Water-Based Drilling Fluids Under High Temperatures
- Forest suberin fatty acids enable tailored and layered multifunctional electrospun polycaprolactone-chitosan nanofibers
BibTeX
@article{pan2026remarkably,
title = {{Remarkably enhancing the microwave absorbing and electrical/thermal capabilities of Te@CuxTe1−x core-shell nanofibers via a Cu-doping strategy}},
author = {Longqiong Pan and Junhao Ding and Baoxin Fan and Zhihao He and Sihan Chen and Liyan Xie and Guoxiu Tong and Wenhua Wu and Tong Wu},
journal = {Advanced Composites and Hybrid Materials},
year = {2026},
month = may,
doi = {10.1007/s42114-026-01880-x},
url = {https://doi.org/10.1007/s42114-026-01880-x},
note = {CC BY},
}
RIS
TY - JOUR
TI - Remarkably enhancing the microwave absorbing and electrical/thermal capabilities of Te@CuxTe1−x core-shell nanofibers via a Cu-doping strategy
AU - Longqiong Pan
AU - Junhao Ding
AU - Baoxin Fan
AU - Zhihao He
AU - Sihan Chen
AU - Liyan Xie
AU - Guoxiu Tong
AU - Wenhua Wu
AU - Tong Wu
PY - 2026
DA - 2026/05/25
JO - Advanced Composites and Hybrid Materials
DO - 10.1007/s42114-026-01880-x
UR - https://doi.org/10.1007/s42114-026-01880-x
AB - Bifunctional materials with high heat conduction and strong microwave absorption play a pivotal role in addressing the challenges of heat accumulation and signal crosstalk in modern devices. However, the design of such bifunctional materials is constrained by the incompatibility between thermal conductivity and microwave absorption. We tackle this challenge by employing a hydrothermal-microwave-assisted solvothermal method to construct Te@Cu x Te 1−x core-shell nanofibers (CSNFs) via a Cu-doping strategy. The multi-heterointerfaces of Te/CuTe, CuTe/Cu 2.74 Te 2 , and Cu 2.74 Te 2 /Cu 7 Te 4 in the CSNFs were controlled by adjusting the feeding ratio ( β = Cu²⁺/Te) to simultaneously enhance their thermal conduction and microwave absorption. Through Cu doping, a low work function (W f ) was achieved to attain high σ and Ohmic loss ( ϵ _c^′ ′ ). Besides, Te@Cu x Te 1−x multi-heterojunctions were formed to enhance interfacial polarization, and the active phonon frequency was extended with good phonon matching to improve thermal conduction. With 1.7 mm in thickness and 30 wt% in load, the CSNFs formed at β = 0.250 achieved a wide band (3.444 GHz/mm), strong absorption (-36.82 dB), and low RCS reduction (36 dB m 2 ), indicating their excellent near-field EM protection and far-field Radar wave stealth performance. Moreover, the Te@Cu x Te 1−x /TPU membrane exhibited high heat conductance (3.95 W/(m K)) under a small load (15 wt%), along with high strength (39.77 MPa) and good flexibility (elongation: 873%). Our research results demonstrate the great application potential of Te@Cu x Te 1−x CSNFs in the EM protecting and heat managing fields, providing theoretical guidance for further design of tellurium-based alloys as integrated materials with effective microwave absorption and thermal conduction.
SN - 2522-0128
SN - 2522-0136
ER -