Dry-Coated Graphite onto Sandpaper for Triboelectric Nanogenerator as an Active Power Source for Portable Electronics
Smitha Ankanahalli Shankaregowda,
Rumana Farheen Sagade Muktar Ahmed,
Yu Liu,
Chandrashekar Bananakere Nanjegowda,
Xing Cheng,
Srikantaswamy Shivanna,
Seeram Ramakrishna,
Zhenfei Yu,
Xiang Zhang,
Krishnaveni Sannathammegowda
Affiliations
Smitha Ankanahalli Shankaregowda
Department of Electronics, Yuvaraja’s College, University of Mysore, Mysuru 570005, Karnataka, India
Rumana Farheen Sagade Muktar Ahmed
Department of Studies in Physics, University of Mysore, Mysuru 570006, Karnataka, India
Yu Liu
Shenzhen Key Laboratory of Nanoimprint Technology, Department of Materials Science and Engineering, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
Chandrashekar Bananakere Nanjegowda
Shenzhen Key Laboratory of Nanoimprint Technology, Department of Materials Science and Engineering, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
Xing Cheng
Shenzhen Key Laboratory of Nanoimprint Technology, Department of Materials Science and Engineering, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
Srikantaswamy Shivanna
Centre for Materials Science and Technology, Vijnana Bhavan, University of Mysore, Manasagangotri, Mysore 570006, India
Seeram Ramakrishna
Department of Mechanical Engineering, National University of Singapore, Singapore 117576, Singapore
Zhenfei Yu
School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
Xiang Zhang
School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
Krishnaveni Sannathammegowda
Department of Studies in Physics, University of Mysore, Mysuru 570006, Karnataka, India
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.
