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Title: Dry-coated graphite onto sandpaper for triboelectric nanogenerator as an active power source for portable electronics
Authors: Shankaregowda, S.A.
Ahmed, R.F.S.M.
Liu, Y.
Nanjegowda, C.B.
Cheng, X.
Shivanna, S.
Ramakrishna, S. 
Yu, Z.
Zhang, X.
Sannathammegowda, K.
Keywords: Biomechanical sensor
Flexible dry electrode
Issue Date: 2019
Publisher: MDPI AG
Citation: Shankaregowda, S.A., Ahmed, R.F.S.M., Liu, Y., Nanjegowda, C.B., Cheng, X., Shivanna, S., Ramakrishna, S., Yu, Z., Zhang, X., Sannathammegowda, K. (2019). Dry-coated graphite onto sandpaper for triboelectric nanogenerator as an active power source for portable electronics. Nanomaterials 9 (11) : 1585. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
Abstract: Developing an eco-friendly, flexible and recyclable micro-structured dry electrode for sustainable life is essential. In this work, we have developed irregular, micro-structured sandpaper coated with graphite powder as an electrode for developing a simple, low-cost, contact-separation mode graphite-coated sandpaper-based triboelectric nanogenerator (GS-TENG) as a self-powered device and biomechanical sensor. The as-fabricated GS-TENG is a dielectric-conductor model. It is made up of a bottom layer with polytetrafluoroethylene (PTFE) as a triboelectric layer, which is attached onto a graphite-coated sandpaper-based electrode and a top layer with aluminum as another triboelectric layer as well as an electrode. The forward and reverse open-circuit voltages reach upto ~33.8 V and ~36.62 V respectively, and the forward and reverse short-circuit currents are ~2.16 µA and ~2.17µA, respectively. The output generated by GS-TENG can power 120 blue light-emitting diodes connected in series, liquid crystal display and can charge commercial capacitors along with the rectifier circuit. The capacitor of 22 µF is charged upto 5 V and is sufficient to drive digital watch as wearable electronics. Moreover, the device can track signals generated by human motion, hence it scavenges biomechanical energy. Thus, GS-TENG facilitates large-scale fabrication and has potential for future applications in wearable and portable devices. © 2019 by the authors. Licensee MDPI, Basel, Switzerland.
Source Title: Nanomaterials
ISSN: 2079-4991
DOI: 10.3390/nano9111585
Rights: Attribution 4.0 International
Appears in Collections:Staff Publications

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