Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/165807
Title: Achieving milliwatt level solar-to-pyroelectric energy harvesting via simultaneous boost to photothermal conversion and thermal diffusivity
Authors: Wang, Huan
Ng, Li Shiuan
Li, Haitao
Lee, Hiang Kwee
Han, Jie
Keywords: Science::Chemistry
Issue Date: 2023
Source: Wang, H., Ng, L. S., Li, H., Lee, H. K. & Han, J. (2023). Achieving milliwatt level solar-to-pyroelectric energy harvesting via simultaneous boost to photothermal conversion and thermal diffusivity. Nano Energy, 108, 108184-. https://dx.doi.org/10.1016/j.nanoen.2023.108184
Project: RS13/20 
RG4/21 
A2084c015 
CHI-P2022–05 
NTU-SUG 
Journal: Nano Energy 
Abstract: Pyroelectric technology is an effective strategy to harvest ambient waste heat into electrical energy to tackle global energy and environmental crises. However, current pyroelectric generators are often limited by low effective power output. Herein, we develop a non-contact, solar-induced pyroelectric nanogenerator (S-PENG) which integrates Au@CNT as solar-thermal layer and polarized PVDF film as pyroelectric layer. The high thermal conductivity of CNT accelerates the heat transfer process, while its strong solar-thermal effect can be coupled with the plasmonic effect of Au nanoparticles to obtain a hybrid ensemble with superior light absorption and conversion. Notably, the solar-thermal temperature of Au@CNT/PVDF rapidly increases from 38 °C to 79.6 °C within 30 s under sunlight irradiation, with a corresponding temperature change rate reaching a maximum of 14.3 °C/s. The drastic temperature fluctuation is crucial to improve the output performance of our S-PENG. More importantly, our S-PENG successfully generates a notable 1.5 mW/m2 output power under a 200 MΩ load (at 20 ℃), thereby overcoming the performance bottleneck of traditional S-PENG designs with micro-watt power output. Our design offers a promising approach to efficiently utilize green solar energy to alleviate our demand on limited energy resources and reduce carbon footprint.
URI: https://hdl.handle.net/10356/165807
ISSN: 2211-2855
DOI: 10.1016/j.nanoen.2023.108184
Schools: School of Chemistry, Chemical Engineering and Biotechnology 
Organisations: Institute of Materials Research and Engineering, A*STAR
Centre for Hydrogen Innovations, NUS
Rights: © 2023 Elsevier Ltd. All rights reserved. This paper was published in Nano Energy and is made available with permission of Elsevier Ltd.
Fulltext Permission: embargo_20250113
Fulltext Availability: With Fulltext
Appears in Collections:CCEB Journal Articles

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