TY - JOUR
T1 - Synergistic effects between MXenes and Ni chains in flexible and ultrathin electromagnetic interference shielding films
AU - Wang, Shi Jun
AU - Li, Dian Sen
AU - Jiang, Lei
N1 - Funding Information:
The authors acknowledge the financial supports from the Excellent Young Scientist Foundation of NSFC (Grant No. 11522216); the National Natural Science Foundation of China (Grant No. 11872087); the Beijing Municipal Natural Science Foundation (Grant No. 2182033); the Aeronautical Science Foundation of China (Grant No. 2016ZF51054); The 111 Project (Grant No. B14009); the Project of the Science and Technology Commission of Military Commission (Grant No. 17-163-12-ZT-004-002-01); the Foundation of Shock and Vibration of Engineering Materials and Structures Key Laboratory of Sichuan Province (Grant No. 18kfgk01); the Fundamental Research Funds for the Central Universities (Grant No. YWF-19-BJ-J-55).
Publisher Copyright:
© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2019/10/9
Y1 - 2019/10/9
N2 - Developing high-performance electromagnetic interference (EMI) shielding materials has become increasingly important along with the upcoming 5G communication era and the boom of wearable devices. However, the large thickness and poor mechanical properties of most of EMI shielding materials cannot satisfy the above critical requirements. Here, flexible and ultrathin poly(vinylidene fluoride) (PVDF)/MXene/Ni chain composite films are fabricated. Interestingly, by combining quasi-1D Ni chains and 2D MXenes, the average EMI shielding effectiveness of the PVDF/MXene/Ni chain composite films can reach 19.3 dB with only 0.10 mm thickness, and increases to 34.4 dB with 0.36 mm thickness. Besides, the tensile strength, Young's modulus, and toughness of the PVDF/MXene/Ni chain composite films are 41.9 ± 1.6 MPa, 1.18 ± 0.007 GPa, and 2.9 ± 0.08 MJ m−3, respectively. All of which are better than when using MXenes or Ni chains alone at the same loading. It is attributed to synergistic effects induced by unique 3D network constituted by MXenes and Ni chains. Moreover, the possible synergistic mechanisms for enhanced EMI shielding and mechanical properties are discussed. This work offers a promising solution for EMI shielding challenges in modern smaller and smaller wearable devices.
AB - Developing high-performance electromagnetic interference (EMI) shielding materials has become increasingly important along with the upcoming 5G communication era and the boom of wearable devices. However, the large thickness and poor mechanical properties of most of EMI shielding materials cannot satisfy the above critical requirements. Here, flexible and ultrathin poly(vinylidene fluoride) (PVDF)/MXene/Ni chain composite films are fabricated. Interestingly, by combining quasi-1D Ni chains and 2D MXenes, the average EMI shielding effectiveness of the PVDF/MXene/Ni chain composite films can reach 19.3 dB with only 0.10 mm thickness, and increases to 34.4 dB with 0.36 mm thickness. Besides, the tensile strength, Young's modulus, and toughness of the PVDF/MXene/Ni chain composite films are 41.9 ± 1.6 MPa, 1.18 ± 0.007 GPa, and 2.9 ± 0.08 MJ m−3, respectively. All of which are better than when using MXenes or Ni chains alone at the same loading. It is attributed to synergistic effects induced by unique 3D network constituted by MXenes and Ni chains. Moreover, the possible synergistic mechanisms for enhanced EMI shielding and mechanical properties are discussed. This work offers a promising solution for EMI shielding challenges in modern smaller and smaller wearable devices.
KW - electromagnetic interference shielding
KW - mechanical properties
KW - MXenes
KW - Ni chains
KW - synergistic effects
UR - http://www.scopus.com/inward/record.url?scp=85070094430&partnerID=8YFLogxK
U2 - 10.1002/admi.201900961
DO - 10.1002/admi.201900961
M3 - Article
AN - SCOPUS:85070094430
SN - 2196-7350
VL - 6
JO - Advanced Materials Interfaces
JF - Advanced Materials Interfaces
IS - 19
M1 - 1900961
ER -