Energy Density in Ionic Thermoelectric Generators by Prussian Blue Electrodes
Solid-state ionic thermoelectric generators have emerged as promising solutions for efficient harvesting of low-grade waste heat. However, the main challenge in achieving continuous power supply is the low efficiency of thermoelectric conversion. In this work, substantial achievements have been made...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Association for the Advancement of Science (AAAS)
2024-01-01
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| Series: | Energy Material Advances |
| Online Access: | https://spj.science.org/doi/10.34133/energymatadv.0089 |
| _version_ | 1797210686903812096 |
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| author | Xia Yang Jin Liu Jianchao Jia Chen Wu Fei Wang Dong Yu Zhu Wei Zeng |
| author_facet | Xia Yang Jin Liu Jianchao Jia Chen Wu Fei Wang Dong Yu Zhu Wei Zeng |
| author_sort | Xia Yang |
| collection | DOAJ |
| description | Solid-state ionic thermoelectric generators have emerged as promising solutions for efficient harvesting of low-grade waste heat. However, the main challenge in achieving continuous power supply is the low efficiency of thermoelectric conversion. In this work, substantial achievements have been made in improving the thermoelectric conversion characteristics by introducing redox pairs on the electrode surfaces. This approach takes advantage of the synergistic effect of thermal diffusion and thermoelectric effects to maximize the conversion efficiency. To improve the thermoelectric storage and output power performance, Prussian blue was attached to a carbon woven fabric and used as an electrode. The incorporation of Prussian blue/carbon woven fabric electrodes results in an increase in current density output and an instantaneous power density of 3.7 mW/m2·K2. Furthermore, under a temperature gradient of 10 K, the output energy density for 2 h is 194 J/m2, and the Carnot relative efficiency is as high as 0.12% at a hot side temperature (TH) of 30 °C and a cold side temperature (TC) of 20 °C. Our findings validate the efficacy of integrating thermal diffusion and redox reactions in ionic thermoelectric generators, paving the way for the progress of thermocharged devices and their potential commercial applications. |
| first_indexed | 2024-04-24T10:14:33Z |
| format | Article |
| id | doaj.art-f52eaca45e5448fab097ace1dd53ad10 |
| institution | Directory Open Access Journal |
| issn | 2692-7640 |
| language | English |
| last_indexed | 2024-04-24T10:14:33Z |
| publishDate | 2024-01-01 |
| publisher | American Association for the Advancement of Science (AAAS) |
| record_format | Article |
| series | Energy Material Advances |
| spelling | doaj.art-f52eaca45e5448fab097ace1dd53ad102024-04-12T17:24:47ZengAmerican Association for the Advancement of Science (AAAS)Energy Material Advances2692-76402024-01-01510.34133/energymatadv.0089Energy Density in Ionic Thermoelectric Generators by Prussian Blue ElectrodesXia Yang0Jin Liu1Jianchao Jia2Chen Wu3Fei Wang4Dong Yu Zhu5Wei Zeng6The Center of Flexible Sensing Technology, Institute of Chemical Engineering, Guangdong Academy of Sciences, Guangzhou 510665, China.c Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Kowloon Clear Water Bay, Hong Kong, China.The Center of Flexible Sensing Technology, Institute of Chemical Engineering, Guangdong Academy of Sciences, Guangzhou 510665, China.The Center of Flexible Sensing Technology, Institute of Chemical Engineering, Guangdong Academy of Sciences, Guangzhou 510665, China.The Center of Flexible Sensing Technology, Institute of Chemical Engineering, Guangdong Academy of Sciences, Guangzhou 510665, China.School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China.The Center of Flexible Sensing Technology, Institute of Chemical Engineering, Guangdong Academy of Sciences, Guangzhou 510665, China.Solid-state ionic thermoelectric generators have emerged as promising solutions for efficient harvesting of low-grade waste heat. However, the main challenge in achieving continuous power supply is the low efficiency of thermoelectric conversion. In this work, substantial achievements have been made in improving the thermoelectric conversion characteristics by introducing redox pairs on the electrode surfaces. This approach takes advantage of the synergistic effect of thermal diffusion and thermoelectric effects to maximize the conversion efficiency. To improve the thermoelectric storage and output power performance, Prussian blue was attached to a carbon woven fabric and used as an electrode. The incorporation of Prussian blue/carbon woven fabric electrodes results in an increase in current density output and an instantaneous power density of 3.7 mW/m2·K2. Furthermore, under a temperature gradient of 10 K, the output energy density for 2 h is 194 J/m2, and the Carnot relative efficiency is as high as 0.12% at a hot side temperature (TH) of 30 °C and a cold side temperature (TC) of 20 °C. Our findings validate the efficacy of integrating thermal diffusion and redox reactions in ionic thermoelectric generators, paving the way for the progress of thermocharged devices and their potential commercial applications.https://spj.science.org/doi/10.34133/energymatadv.0089 |
| spellingShingle | Xia Yang Jin Liu Jianchao Jia Chen Wu Fei Wang Dong Yu Zhu Wei Zeng Energy Density in Ionic Thermoelectric Generators by Prussian Blue Electrodes Energy Material Advances |
| title | Energy Density in Ionic Thermoelectric Generators by Prussian Blue Electrodes |
| title_full | Energy Density in Ionic Thermoelectric Generators by Prussian Blue Electrodes |
| title_fullStr | Energy Density in Ionic Thermoelectric Generators by Prussian Blue Electrodes |
| title_full_unstemmed | Energy Density in Ionic Thermoelectric Generators by Prussian Blue Electrodes |
| title_short | Energy Density in Ionic Thermoelectric Generators by Prussian Blue Electrodes |
| title_sort | energy density in ionic thermoelectric generators by prussian blue electrodes |
| url | https://spj.science.org/doi/10.34133/energymatadv.0089 |
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