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Easily Synthesized [email protected] Nanowhiskers Better Tune Network Structures in Ag-Based Adhesives: Examining the Improvements in Conductivity, Stability, and Flexibility

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School of Materials Science and Engineering, Harbin Institute of Technology, Nangang District, Harbin 150001, China
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Department of Materials Science and Engineering, Southern University of Science and Technology, Xili, Nanshan District, Shenzhen 518055, China
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Authors to whom correspondence should be addressed.
Nanomaterials 2019, 9(11), 1542; https://doi.org/10.3390/nano9111542
Received: 25 September 2019 / Revised: 23 October 2019 / Accepted: 25 October 2019 / Published: 30 October 2019
It is essential to develop a novel and versatile strategy for constructing electrically conductive adhesives (ECAs) that have superior conductivity and high mechanical properties. In this work, easily synthesized [email protected] ([email protected]) nanowhiskers with a high aspect ratio and excellent solubility in 1,4-dioxane were prepared and added to conventional Ag-containing adhesives. A small amount of [email protected] can dramatically tune the structure of the ECAs’ conductive network and significantly improve the conductivity of the ECAs. Good solubility of [email protected] in solvents brings excellent dispersion in the polymer matrix. Thus, a three-dimensional (3D) conducting network formed with dispersed [email protected] and Ag flakes can enhance the conductivity of ECAs. The conductivity of the ECAs (with 1.5 wt% [email protected] and 55 wt% Ag flakes) showed three orders of magnitude higher than that of the ECAs filled with 55 wt% Ag flakes and 65 wt% Ag flakes. Meanwhile, the integration of [email protected] with Ag flakes in polymer matrices also significantly enhanced the mechanical compliance of the resulted ECAs. The resistivity remained unchanged after rolling the [email protected] ECAs’ film into a 4 mm bending radius for over 1500 cycles. A bendable printed circuit was fabricated using the above [email protected] ECAs, which demonstrated their future potential in the field of flexible electronics. View Full-Text
Keywords: electrically conductive adhesives; preparation; [email protected]; electrical properties; flexible electronics electrically conductive adhesives; preparation; [email protected]; electrical properties; flexible electronics
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Cao, G.; Gao, X.; Wang, L.; Cui, H.; Lu, J.; Meng, Y.; Xue, W.; Cheng, C.; Tian, Y.; Tian, Y. Easily Synthesized [email protected] Nanowhiskers Better Tune Network Structures in Ag-Based Adhesives: Examining the Improvements in Conductivity, Stability, and Flexibility. Nanomaterials 2019, 9, 1542.

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