TY - JOUR
T1 - Multifunctional ionic bonding-strengthened (Ti3C2Tx MXene/CNF)-(BNNS/CNF) composite films with Janus structure for outstanding electromagnetic interference shielding and thermal management
AU - Wang, Lei
AU - Lang, Li
AU - Hu, Xiaofeng
AU - Gao, Tiantian
AU - He, Mukun
AU - Qiu, Hua
AU - Ji, Xiaohui
AU - Guo, Hua
AU - Zhang, Yali
AU - Huang, Shan
N1 - Publisher Copyright:
© 2024
PY - 2025/7/20
Y1 - 2025/7/20
N2 - Flexible multifunctional polymer-based electromagnetic interference (EMI) shielding composite films play a pivotal role in 5 G communication technology, smart wearables, automotive electronics, and aerospace. In this work, (Ti3C2Tx MXene/cellulose nanofibers (CNF)-(hydroxy‑functionalized BNNS (BNNS-OH)/CNF) composite films (TBCF) with Janus structure are prepared via vacuum-assisted filtration of BNNS-OH/CNF and Ti3C2Tx/CNF suspension by one after another. Then ionic bonding-strengthened TBCF (ITBCF) is obtained by Ca2+ ion infiltration and cold-pressing technique. The Janus structure endows ITBCF with the unique “conductive on one side and insulating on the other” property. When the mass ratio of Ti3C2Tx and BNNS is 1:1 and the total mass fraction is 70 wt.%, the electrical conductivity (σ) of the Ti3C2Tx/CNF side of ITBCF reaches 166.7 S/cm, while the surface resistivity of the BNNS-OH/CNF side is as high as 304 MΩ. After Ca2+ ion infiltration, the mechanical properties of ITBCF are significantly enhanced. The tensile strength and modulus of ITBCF are 73.5 MPa and 15.6 GPa, which are increased by 75.9% and 46.2% compared with those of TBCF, respectively. Moreover, ITBCF exhibits outstanding EMI shielding effectiveness (SE) of 57 dB and thermal conductivity (λ) of 9.49 W/(m K). In addition, ITBCF also presents excellent photothermal and photoelectric energy conversion performance. Under simulated solar irradiation with a power density of 120 mW/cm2, the surface stabilization temperature reaches up to 65.3 °C and the maximum steady state voltage reaches up to 58.2 mV.
AB - Flexible multifunctional polymer-based electromagnetic interference (EMI) shielding composite films play a pivotal role in 5 G communication technology, smart wearables, automotive electronics, and aerospace. In this work, (Ti3C2Tx MXene/cellulose nanofibers (CNF)-(hydroxy‑functionalized BNNS (BNNS-OH)/CNF) composite films (TBCF) with Janus structure are prepared via vacuum-assisted filtration of BNNS-OH/CNF and Ti3C2Tx/CNF suspension by one after another. Then ionic bonding-strengthened TBCF (ITBCF) is obtained by Ca2+ ion infiltration and cold-pressing technique. The Janus structure endows ITBCF with the unique “conductive on one side and insulating on the other” property. When the mass ratio of Ti3C2Tx and BNNS is 1:1 and the total mass fraction is 70 wt.%, the electrical conductivity (σ) of the Ti3C2Tx/CNF side of ITBCF reaches 166.7 S/cm, while the surface resistivity of the BNNS-OH/CNF side is as high as 304 MΩ. After Ca2+ ion infiltration, the mechanical properties of ITBCF are significantly enhanced. The tensile strength and modulus of ITBCF are 73.5 MPa and 15.6 GPa, which are increased by 75.9% and 46.2% compared with those of TBCF, respectively. Moreover, ITBCF exhibits outstanding EMI shielding effectiveness (SE) of 57 dB and thermal conductivity (λ) of 9.49 W/(m K). In addition, ITBCF also presents excellent photothermal and photoelectric energy conversion performance. Under simulated solar irradiation with a power density of 120 mW/cm2, the surface stabilization temperature reaches up to 65.3 °C and the maximum steady state voltage reaches up to 58.2 mV.
KW - Electromagnetic interference shielding
KW - Janus structure
KW - MXene
KW - Photothermal conversion performance
KW - Thermal management
UR - http://www.scopus.com/inward/record.url?scp=85211687830&partnerID=8YFLogxK
U2 - 10.1016/j.jmst.2024.11.010
DO - 10.1016/j.jmst.2024.11.010
M3 - 文章
AN - SCOPUS:85211687830
SN - 1005-0302
VL - 224
SP - 46
EP - 55
JO - Journal of Materials Science and Technology
JF - Journal of Materials Science and Technology
ER -