期刊
NANOMATERIALS
卷 9, 期 11, 页码 -出版社
MDPI
DOI: 10.3390/nano9111585
关键词
graphite; sandpaper; flexible dry electrode; biomechanical sensor
类别
资金
- Department of Science and Technology of Guangdong Province [2018B030322001]
- Shenzhen Science and Technology Innovation Committee [ZDSYS20140509142721431]
- Beijing Institute of Technology, Beijing, China [3030012331712]
- Department of Science and Technology (Government of India) [IF170802]
- [2019110051000037]
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 similar to 33.8 V and similar to 36.62 V respectively, and the forward and reverse short-circuit currents are similar to 2.16 mu A and similar to 2.17 mu A, 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 mu F 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.
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