Pyroelectric energy conversion using Ba0.85Sr0.15Zr0.1Ti0.9O3 ceramics and its cement-based composites
| Autor: | Moolchand Sharma, Anuruddh Kumar, Sidhant Kumar, Satyanarayan Patel, K. S. Srikanth, Rajeev Kumar, Puneet Azad, Rahul Vaish |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Mechanical Engineering 02 engineering and technology Dielectric Cement composites 021001 nanoscience & nanotechnology 01 natural sciences Ferroelectricity Pyroelectricity visual_art 0103 physical sciences visual_art.visual_art_medium Energy transformation General Materials Science Ceramic Composite material 0210 nano-technology Cement based composites |
| Zdroj: | Journal of Intelligent Material Systems and Structures. 30:869-877 |
| ISSN: | 1530-8138 1045-389X |
| Popis: | In this article, we focus on cement-binded Ba0.85Sr0.15Zr0.1Ti0.9O3 ceramics for pyroelectric applications. It was prepared with the Ba0.85Sr0.15Zr0.1Ti0.9O3-to-cement ratios of 85%:15% and 80%:20% by weight. In order to improve the effectiveness of thermal-to-electric energy conversion, the synchronized switch harvesting on inductor technique is experimentally tested on cement composites. Our experimental findings reveal that this concept based on synchronized switch harvesting on inductor can significantly increase the amount of power extracted from pyroelectric materials. Furthermore, the optimized power across 15% and 20% cement composites were found to be 7.2 and 6 nW, respectively, in series synchronized switch harvesting on inductor and 8.5 and 7 nW, respectively, in parallel synchronized switch harvesting on inductor. These values are significantly higher when compared with non-switched circuit for pyroelectric applications. Although, from the obtained results for the prepared composites, the power output is less when compared with pure Ba0.85Sr0.15Zr0.1Ti0.9O3, they have some advantages: these composites can be made without any sintering process and are compatible for structural applications. |
| Databáze: | OpenAIRE |
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