Self-healing and superstretchable conductors from hierarchical nanowire assemblies

Pin Song, Haili Qin, Huai-Ling Gao, Huai-Ping Cong () and Shu-Hong Yu ()
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Pin Song: Hefei University of Technology
Haili Qin: Hefei University of Technology
Huai-Ling Gao: University of Science and Technology of China
Huai-Ping Cong: Hefei University of Technology
Shu-Hong Yu: University of Science and Technology of China

Nature Communications, 2018, vol. 9, issue 1, 1-9

Abstract: Abstract It is still a great challenge to improve deformability and fatigue-resistance of stretchable conductors when maintaining their high-level conductivity for practical use. Herein, a high-performance stretchable conductor with hierarchically ternary network and self-healing capability is demonstrated through in situ polymerizing N-isopropylacrylamide (NIPAM) on well-defined sulfur-containing molecule-modified Ag nanowire (AgNW) aerogel framework. Owing to hierarchical architecture from nanoscale to microscale and further to macroscale and strong interactions of polymer chains and AgNWs, the composite exhibits good conductivity of 93 S cm−1, excellent electromechanical stability up to superhigh tensile strain of 800% and strong fatigue-resistant ability through well accommodating the applied deformations and sharing external force in the network. Furthermore, the composite delivers a fast and strong healing capability induced by reversible Ag–S bonds, which enables the healed conductor to hold an impressive electromechanical property. These prominent demonstrations confirm this material as top performer for use as flexible, stretchable electronic devices.

Date: 2018
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DOI: 10.1038/s41467-018-05238-w

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