Two-dimensional cobalt telluride as a piezo-tribogenerator.

Autor: Negedu SD; Department of Metallurgical and Materials Engineering, Indian Institute of Technology Kharagpur, West Bengal, 721302, India. parthakumbhakar2@gmail.com.; Materials Science and Engineering, Jimma Institute of Technology, Jimma University, Jimma, Ethiopia., Tromer R; Applied Physics Department, University of Campinas, Brazil. galvao@ifi.unicamp.br., Gowda CC; School of Nano Science and Technology, Indian Institute of Technology Kharagpur, West Bengal, 721302, India., Woellner CF; Physics Department, Federal University of Parana, UFPR, Curitiba, PR, 81531-980, Brazil., Olu FE; Materials Science and Engineering, Jimma Institute of Technology, Jimma University, Jimma, Ethiopia., Roy AK; Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson AFB, OH 45433-7718, USA., Pandey P; Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India., Galvao DS; Applied Physics Department, University of Campinas, Brazil. galvao@ifi.unicamp.br.; Center for Computational Engineering and Sciences, State University of Campinas, Campinas, SP, 13083-970, Brazil., Ajayan PM; Department of Materials Science and Nano Engineering, Rice University, Houston, TX 77005, USA. ajayan@rice.edu., Kumbhakar P; Department of Metallurgical and Materials Engineering, Indian Institute of Technology Kharagpur, West Bengal, 721302, India. parthakumbhakar2@gmail.com., Tiwary CS; Department of Metallurgical and Materials Engineering, Indian Institute of Technology Kharagpur, West Bengal, 721302, India. parthakumbhakar2@gmail.com.
Jazyk: angličtina
Zdroj: Nanoscale [Nanoscale] 2022 Jun 01; Vol. 14 (21), pp. 7788-7797. Date of Electronic Publication: 2022 Jun 01.
DOI: 10.1039/d2nr00132b
Abstrakt: Two-dimensional (2D) materials have been shown to be efficient in energy harvesting. Here, we report the use of waste heat to generate electricity via the combined piezoelectric and triboelectric properties of 2D cobalt telluride (CoTe 2 ). The piezo-triboelectric nanogenerator (PTNG) produced an open-circuit voltage of ∼5 V under 1 N force and the effect of temperature in the range of 305-363 K shows a four-fold energy conversion efficiency improvement. The 2D piezo-tribogenerator shows excellent characteristics with a maximum voltage of ∼10 V, fast response time, and high responsivity. Density functional theory was used to gain further insights and validation of the experimental results. Our results could lead to energy harvesting approaches using 2D materials from various thermal sources and dissipating waste heat from electronic devices.
Databáze: MEDLINE