Enhancing the Interaction of Carbon Nanotubes by Metal–Organic Decomposition with Improved Mechanical Strength and Ultra-Broadband EMI Shielding Performance

Shi，Yu Ying1,2; Liao，Si Yuan1; Wang，Qiao Feng1; Xu，Xin Yun1; Wang，Xiao Yun1; Gu，Xin Yin1; Hu，You Gen1; Zhu，Peng Li1; Sun，Rong1; Wan，Yan Jun1,3

2024-12-01

10.1007/s40820-024-01344-1

Nano-Micro Letters   影响因子和分区

2311-6706

2150-5551

The remarkable properties of carbon nanotubes (CNTs) have led to promising applications in the field of electromagnetic interference (EMI) shielding. However, for macroscopic CNT assemblies, such as CNT film, achieving high electrical and mechanical properties remains challenging, which heavily depends on the tube–tube interactions of CNTs. Herein, we develop a novel strategy based on metal–organic decomposition (MOD) to fabricate a flexible silver–carbon nanotube (Ag–CNT) film. The Ag particles are introduced in situ into the CNT film through annealing of MOD, leading to enhanced tube–tube interactions. As a result, the electrical conductivity of Ag–CNT film is up to 6.82 × 10 S m, and the EMI shielding effectiveness of Ag–CNT film with a thickness of ~ 7.8 μm exceeds 66 dB in the ultra-broad frequency range (3–40 GHz). The tensile strength and Young’s modulus of Ag–CNT film increase from 30.09 ± 3.14 to 76.06 ± 6.20 MPa (~ 253%) and from 1.12 ± 0.33 to 8.90 ± 0.97 GPa (~ 795%), respectively. Moreover, the Ag–CNT film exhibits excellent near-field shielding performance, which can effectively block wireless transmission. This innovative approach provides an effective route to further apply macroscopic CNT assemblies to future portable and wearable electronic devices. (Figure presented.)

Carbon nanotubes EMI shielding Flexibility Mechanical strength Metal–organic decomposition

SCI

英语

其他

2-s2.0-85186142992

Scopus

1.Shenzhen Institute of Advanced Electronic Materials,Shenzhen Institutes of Advanced Technology,Chinese Academy of Sciences,Shenzhen,518055,China
2.Southern University of Science and Technology,Shenzhen,518055,China
3.National Key Laboratory of Materials for Integrated Circuits,Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences,Shanghai,200050,China

Shi，Yu Ying,Liao，Si Yuan,Wang，Qiao Feng,等. Enhancing the Interaction of Carbon Nanotubes by Metal–Organic Decomposition with Improved Mechanical Strength and Ultra-Broadband EMI Shielding Performance[J]. Nano-Micro Letters,2024,16(1).

Shi，Yu Ying.,Liao，Si Yuan.,Wang，Qiao Feng.,Xu，Xin Yun.,Wang，Xiao Yun.,...&Wan，Yan Jun.(2024).Enhancing the Interaction of Carbon Nanotubes by Metal–Organic Decomposition with Improved Mechanical Strength and Ultra-Broadband EMI Shielding Performance.Nano-Micro Letters,16(1).

Shi，Yu Ying,et al."Enhancing the Interaction of Carbon Nanotubes by Metal–Organic Decomposition with Improved Mechanical Strength and Ultra-Broadband EMI Shielding Performance".Nano-Micro Letters 16.1(2024).