Multi-scale CuS-rGO pyramidal photothermal structure for highly efficient solar-driven water evaporation and thermoelectric power generation
Integrated water evaporation and thermoelectric power generation system (IWETPGS) has been recognized to be a promising strategy for the utilization of solar energy. Herein, we developed a new type of IWETPGS with multi-scale pyramidal photothermal structures. They featured three-dimensional pyramid...
| Main Authors: | , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/180326 |
| _version_ | 1824455659324702720 |
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| author | Zeng, Long Deng, Daxiang Zhu, Linye Zhang, Zhenkun Gu, Xin Wang, Huiming Jiang, Yujie |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Zeng, Long Deng, Daxiang Zhu, Linye Zhang, Zhenkun Gu, Xin Wang, Huiming Jiang, Yujie |
| author_sort | Zeng, Long |
| collection | NTU |
| description | Integrated water evaporation and thermoelectric power generation system (IWETPGS) has been recognized to be a promising strategy for the utilization of solar energy. Herein, we developed a new type of IWETPGS with multi-scale pyramidal photothermal structures. They featured three-dimensional pyramidal structures with microscale gradient porous copper foams, as well as micro/nanoscale CuS nanowires and reduced graphene oxide (rGO) composite materials. They combined the merits of efficient multiple refraction and absorption of light, broad-spectrum absorption capabilities of rGO and high near-infrared extinction coefficient of CuS, as well as fast water transportation by gradient porous matrix. These photothermal structures induced a photothermal conversion efficiency of 97.6%. An IWETPGS integrating these structures with a thermoelectric generator (TEG) and microchannel heat sink was developed, and outstanding evaporation and output power performance were obtained simultaneously with an evaporation rate of 2.29 kg/m2h and maximum output power of 1.32 W/m2 under 1 sun illumination. Outdoor tests showed that an average daily water production of 12.1 kg/m2 and a maximum power generation of 5.55 W/m2 was obtained. This work provides a high-performance multi-scale CuS-rGO pyramidal photothermal structure to achieve freshwater and thermoelectric power co-generation, which provides potential opportunities for freshwater and electricity supply in remote areas. |
| first_indexed | 2025-02-19T03:41:43Z |
| format | Journal Article |
| id | ntu-10356/180326 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:41:43Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1803262024-10-01T07:23:15Z Multi-scale CuS-rGO pyramidal photothermal structure for highly efficient solar-driven water evaporation and thermoelectric power generation Zeng, Long Deng, Daxiang Zhu, Linye Zhang, Zhenkun Gu, Xin Wang, Huiming Jiang, Yujie School of Mechanical and Aerospace Engineering Engineering Solar evaporation Photothermal structures Integrated water evaporation and thermoelectric power generation system (IWETPGS) has been recognized to be a promising strategy for the utilization of solar energy. Herein, we developed a new type of IWETPGS with multi-scale pyramidal photothermal structures. They featured three-dimensional pyramidal structures with microscale gradient porous copper foams, as well as micro/nanoscale CuS nanowires and reduced graphene oxide (rGO) composite materials. They combined the merits of efficient multiple refraction and absorption of light, broad-spectrum absorption capabilities of rGO and high near-infrared extinction coefficient of CuS, as well as fast water transportation by gradient porous matrix. These photothermal structures induced a photothermal conversion efficiency of 97.6%. An IWETPGS integrating these structures with a thermoelectric generator (TEG) and microchannel heat sink was developed, and outstanding evaporation and output power performance were obtained simultaneously with an evaporation rate of 2.29 kg/m2h and maximum output power of 1.32 W/m2 under 1 sun illumination. Outdoor tests showed that an average daily water production of 12.1 kg/m2 and a maximum power generation of 5.55 W/m2 was obtained. This work provides a high-performance multi-scale CuS-rGO pyramidal photothermal structure to achieve freshwater and thermoelectric power co-generation, which provides potential opportunities for freshwater and electricity supply in remote areas. This study was financially supported under the Grants of the National Natural Science Foundation of China (No. 52275415, No. U22A20194), and Innovation Project of University of Guangdong Province (No. 2022KTSCX211, No. 2023KTSCX227), Shenzhen Stable Support Program of University (No. GXWD20231130002845001, No. GXWD20231130003553001), and CGN-HIT Advanced Nuclear and New Energy Research Institute (No. CGN-HIT202220). 2024-10-01T07:23:15Z 2024-10-01T07:23:15Z 2024 Journal Article Zeng, L., Deng, D., Zhu, L., Zhang, Z., Gu, X., Wang, H. & Jiang, Y. (2024). Multi-scale CuS-rGO pyramidal photothermal structure for highly efficient solar-driven water evaporation and thermoelectric power generation. Nano Energy, 125, 109531-. https://dx.doi.org/10.1016/j.nanoen.2024.109531 2211-2855 https://hdl.handle.net/10356/180326 10.1016/j.nanoen.2024.109531 2-s2.0-85188919096 125 109531 en Nano Energy © 2024 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering Solar evaporation Photothermal structures Zeng, Long Deng, Daxiang Zhu, Linye Zhang, Zhenkun Gu, Xin Wang, Huiming Jiang, Yujie Multi-scale CuS-rGO pyramidal photothermal structure for highly efficient solar-driven water evaporation and thermoelectric power generation |
| title | Multi-scale CuS-rGO pyramidal photothermal structure for highly efficient solar-driven water evaporation and thermoelectric power generation |
| title_full | Multi-scale CuS-rGO pyramidal photothermal structure for highly efficient solar-driven water evaporation and thermoelectric power generation |
| title_fullStr | Multi-scale CuS-rGO pyramidal photothermal structure for highly efficient solar-driven water evaporation and thermoelectric power generation |
| title_full_unstemmed | Multi-scale CuS-rGO pyramidal photothermal structure for highly efficient solar-driven water evaporation and thermoelectric power generation |
| title_short | Multi-scale CuS-rGO pyramidal photothermal structure for highly efficient solar-driven water evaporation and thermoelectric power generation |
| title_sort | multi scale cus rgo pyramidal photothermal structure for highly efficient solar driven water evaporation and thermoelectric power generation |
| topic | Engineering Solar evaporation Photothermal structures |
| url | https://hdl.handle.net/10356/180326 |
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