Negedu, Solomon Demiss and Tromer, Raphael and Gowda, Chinmayee Chowde and Woellner, Cristiano F and Olu, Femi Emmanuel and Roy, Ajit K and Pandey, Prafull and Galvao, Douglas S and Ajayan, Pulickel M and Kumbhakar, Partha and Tiwary, Chandra S (2022) Two-dimensional cobalt telluride as a piezo-tribogenerator. In: Nanoscale . ISSN 2040-3364
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Abstract
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 (CoTe2). 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.
| Item Type: | Journal Article |
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| Publication: | Nanoscale |
| Publisher: | Royal Society of Chemistry |
| Additional Information: | The copyright of this article belongs to the Authors. |
| Keywords: | Cobalt compounds; Conversion efficiency; Density functional theory; Energy harvesting; Open circuit voltage, Effects of temperature; Efficiency improvement; Energy conversion efficiency; Fast response time; Generate electricity; Nanogenerators; Open-circuit voltages; Piezoelectric; Property; Two-dimensional, Waste heat. |
| Department/Centre: | Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy) |
| Date Deposited: | 23 May 2022 04:41 |
| Last Modified: | 23 May 2022 04:41 |
| URI: | https://eprints.iisc.ac.in/id/eprint/72402 |
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