TY - JOUR
T1 - Printable Aligned Single-Walled Carbon Nanotube Film with Outstanding Thermal Conductivity and Electromagnetic Interference Shielding Performance
AU - Zeng, Zhihui
AU - Wang, Gang
AU - Wolan, Brendan F.
AU - Wu, Na
AU - Wang, Changxian
AU - Zhao, Shanyu
AU - Yue, Shengying
AU - Li, Bin
AU - He, Weidong
AU - Liu, Jiurong
AU - Lyding, Joseph W.
N1 - The authors thank the support of National Key R&D Program of China (2021YFB3502500), Provincial Key Research and Development Program of Shandong (2019JZZY010312, 2021ZLGX01), Natural Science Foundation of Shandong Province (2022HYYQ-014), New 20 Funded Programs for Universities of Jinan (2021GXRC036), and Qilu Young Scholar Program of Shandong University (31370082163127). The authors acknowledge the assistance of Shandong University Testing and Manufacturing Center for Advanced Materials. G.W. and J.W.L. acknowledge support from the National Science Foundation Engineering Research Center for Power Optimization of Electro Thermal Systems (POETS) under Grant No. EEC 1449548. Material characterization was carried out in part in the Materials Research Laboratory Central Research Facilities, University of Illinois.
The authors thank the support of National Key R&D Program of China (2021YFB3502500), Provincial Key Research and Development Program of Shandong (2019JZZY010312, 2021ZLGX01), Natural Science Foundation of Shandong Province (2022HYYQ-014), New 20 Funded Programs for Universities of Jinan (2021GXRC036), and Qilu Young Scholar Program of Shandong University (31370082163127). The authors acknowledge the assistance of Shandong University Testing and Manufacturing Center for Advanced Materials. G.W. and J.W.L. acknowledge support from the National Science Foundation Engineering Research Center for Power Optimization of Electro Thermal Systems (POETS) under Grant No. EEC 1449548. Material characterization was carried out in part in the Materials Research Laboratory Central Research Facilities, University of Illinois.
PY - 2022/12
Y1 - 2022/12
N2 - Ultrathin, lightweight, and flexible aligned single-walled carbon nanotube (SWCNT) films are fabricated by a facile, environmentally friendly, and scalable printing methodology. The aligned pattern and outstanding intrinsic properties render “metal-like” thermal conductivity of the SWCNT films, as well as excellent mechanical strength, flexibility, and hydrophobicity. Further, the aligned cellular microstructure promotes the electromagnetic interference (EMI) shielding ability of the SWCNTs, leading to excellent shielding effectiveness (SE) of ~ 39 to 90 dB despite a density of only ~ 0.6 g cm−3 at thicknesses of merely 1.5–24 µm, respectively. An ultrahigh thickness-specific SE of 25 693 dB mm−1 and an unprecedented normalized specific SE of 428 222 dB cm2 g−1 are accomplished by the freestanding SWCNT films, significantly surpassing previously reported shielding materials. In addition to an EMI SE greater than 54 dB in an ultra-broadband frequency range of around 400 GHz, the films demonstrate excellent EMI shielding stability and reliability when subjected to mechanical deformation, chemical (acid/alkali/organic solvent) corrosion, and high-/low-temperature environments. The novel printed SWCNT films offer significant potential for practical applications in the aerospace, defense, precision components, and smart wearable electronics industries.[Figure not available: see fulltext.]
AB - Ultrathin, lightweight, and flexible aligned single-walled carbon nanotube (SWCNT) films are fabricated by a facile, environmentally friendly, and scalable printing methodology. The aligned pattern and outstanding intrinsic properties render “metal-like” thermal conductivity of the SWCNT films, as well as excellent mechanical strength, flexibility, and hydrophobicity. Further, the aligned cellular microstructure promotes the electromagnetic interference (EMI) shielding ability of the SWCNTs, leading to excellent shielding effectiveness (SE) of ~ 39 to 90 dB despite a density of only ~ 0.6 g cm−3 at thicknesses of merely 1.5–24 µm, respectively. An ultrahigh thickness-specific SE of 25 693 dB mm−1 and an unprecedented normalized specific SE of 428 222 dB cm2 g−1 are accomplished by the freestanding SWCNT films, significantly surpassing previously reported shielding materials. In addition to an EMI SE greater than 54 dB in an ultra-broadband frequency range of around 400 GHz, the films demonstrate excellent EMI shielding stability and reliability when subjected to mechanical deformation, chemical (acid/alkali/organic solvent) corrosion, and high-/low-temperature environments. The novel printed SWCNT films offer significant potential for practical applications in the aerospace, defense, precision components, and smart wearable electronics industries.[Figure not available: see fulltext.]
KW - Aligned film
KW - Electromagnetic interference shielding
KW - Flexible
KW - Lightweight
KW - Single-walled carbon nanotube
KW - Thermal conductivity
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U2 - 10.1007/s40820-022-00883-9
DO - 10.1007/s40820-022-00883-9
M3 - Article
C2 - 36048370
AN - SCOPUS:85137588258
SN - 2311-6706
VL - 14
JO - Nano-Micro Letters
JF - Nano-Micro Letters
IS - 1
M1 - 179
ER -