Harvesting electrical energy from carbon nanotube yarn twist

Shi Hyeong Kim, Carter S. Haines, Na Li, Keon Jung Kim, Tae Jin Mun, Changsoon Choi, Jiangtao Di, Young Jun Oh, Juan Pablo Oviedo, Julia Bykova, Shaoli Fang, Nan Jiang, Zunfeng Liu, Run Wang, Prashant Kumar, Rui Qiao, Shashank Priya, Kyeongjae Cho, Moon Kim, Matthew Steven LucasLawrence F. Drummy, Benji Maruyama, Dong Youn Lee, Xavier Lepró, Enlai Gao, Dawood Albarq, Raquel Ovalle-Robles, Seon Jeong Kim, Ray H. Baughman

Research output: Contribution to journalArticle

117 Scopus citations

Abstract

Mechanical energy harvesters are needed for diverse applications, including self-powered wireless sensors, structural and human health monitoring systems, and the extraction of energy from ocean waves.We report carbon nanotube yarn harvesters that electrochemically convert tensile or torsional mechanical energy into electrical energy without requiring an external bias voltage. Stretching coiled yarns generated 250 watts per kilogram of peak electrical power when cycled up to 30 hertz, as well as up to 41.2 joules per kilogram of electrical energy per mechanical cycle, when normalized to harvester yarn weight.These energy harvesters were used in the ocean to harvest wave energy, combined with thermally driven artificial muscles to convert temperature fluctuations to electrical energy, sewn into textiles for use as self-powered respiration sensors, and used to power a light-emitting diode and to charge a storage capacitor.

Original languageEnglish (US)
Pages (from-to)773-778
Number of pages6
JournalScience
Volume357
Issue number6353
DOIs
StatePublished - Aug 25 2017

All Science Journal Classification (ASJC) codes

  • General

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    Kim, S. H., Haines, C. S., Li, N., Kim, K. J., Mun, T. J., Choi, C., Di, J., Oh, Y. J., Oviedo, J. P., Bykova, J., Fang, S., Jiang, N., Liu, Z., Wang, R., Kumar, P., Qiao, R., Priya, S., Cho, K., Kim, M., ... Baughman, R. H. (2017). Harvesting electrical energy from carbon nanotube yarn twist. Science, 357(6353), 773-778. https://doi.org/10.1126/science.aam8771