Extremely stretchable and self-healing conductor based on thermoplastic elastomer for all-three-dimensional printed triboelectric nanogenerator

Kaushik Parida, Gurunathan Thangavel, Guofa Cai, Xinran Zhou, Sangbaek Park, Jiaqing Xiong and Pooi See Lee ()
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Kaushik Parida: Nanyang Technological University
Gurunathan Thangavel: Nanyang Technological University
Guofa Cai: Nanyang Technological University
Xinran Zhou: Nanyang Technological University
Sangbaek Park: Nanyang Technological University
Jiaqing Xiong: Nanyang Technological University
Pooi See Lee: Nanyang Technological University

Nature Communications, 2019, vol. 10, issue 1, 1-9

Abstract: Abstract Advances in next-generation soft electronic devices rely on the development of highly deformable, healable, and printable energy generators to power these electronics. Development of deformable or wearable energy generators that can simultaneously attain extreme stretchability with superior healability remains a daunting challenge. We address this issue by developing a highly conductive, extremely stretchable, and healable composite based on thermoplastic elastomer with liquid metal and silver flakes as the stretchable conductor for triboelectric nanogenerators. The elastomer is used both as the matrix for the conductor and as the triboelectric layer. The nanogenerator showed a stretchability of 2500% and it recovered its energy-harvesting performance after extreme mechanical damage, due to the supramolecular hydrogen bonding of the thermoplastic elastomer. The composite of the thermoplastic elastomer, liquid metal particles, and silver flakes exhibited an initial conductivity of 6250 S cm−1 and recovered 96.0% of its conductivity after healing.

Date: 2019
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DOI: 10.1038/s41467-019-10061-y

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