How Porosity Affects the Performance of Piezoelectric Energy Harvesters and Sensors
Abstract Porosity has been experimentally employed to enhance the power output of piezoelectric energy harvesters. However, porosity lowers the breakdown voltage of the piezoelectric layer and hampers the pre‐poling of the piezoelectric, which is needed to achieve enhanced performance. Furthermore,...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2023-02-01
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| Series: | Advanced Physics Research |
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| Online Access: | https://doi.org/10.1002/apxr.202200042 |
| _version_ | 1797775072889405440 |
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| author | Morteza Hassanpour Amiri Kamal Asadi |
| author_facet | Morteza Hassanpour Amiri Kamal Asadi |
| author_sort | Morteza Hassanpour Amiri |
| collection | DOAJ |
| description | Abstract Porosity has been experimentally employed to enhance the power output of piezoelectric energy harvesters. However, porosity lowers the breakdown voltage of the piezoelectric layer and hampers the pre‐poling of the piezoelectric, which is needed to achieve enhanced performance. Furthermore, the effect of fractional porosity and pore size on the poling conditions and the enhanced power output of the comprising piezoelectric harvesters is not yet known. Here, through finite‐element method simulations, it is shown that the enhanced performance of the porous piezoelectric harvesters is independent of the size and distribution of the pores and only depends on the fractional porosity. Moreover, it is shown that the presence of pores yields the emergence of local stress hot spots that are mainly responsible for improved performance. Moreover, it is suggested that the breakdown issue of the porous piezoelectric layers can be mitigated by poling the structures in a vacuum using electric fields below the threshold field for electron field emission from the piezoelectric layer. |
| first_indexed | 2024-03-12T22:30:22Z |
| format | Article |
| id | doaj.art-344d3d09dba84751b4a4d6a46c78822a |
| institution | Directory Open Access Journal |
| issn | 2751-1200 |
| language | English |
| last_indexed | 2024-03-12T22:30:22Z |
| publishDate | 2023-02-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Physics Research |
| spelling | doaj.art-344d3d09dba84751b4a4d6a46c78822a2023-07-21T15:30:22ZengWiley-VCHAdvanced Physics Research2751-12002023-02-0122n/an/a10.1002/apxr.202200042How Porosity Affects the Performance of Piezoelectric Energy Harvesters and SensorsMorteza Hassanpour Amiri0Kamal Asadi1Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz GermanyMax Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz GermanyAbstract Porosity has been experimentally employed to enhance the power output of piezoelectric energy harvesters. However, porosity lowers the breakdown voltage of the piezoelectric layer and hampers the pre‐poling of the piezoelectric, which is needed to achieve enhanced performance. Furthermore, the effect of fractional porosity and pore size on the poling conditions and the enhanced power output of the comprising piezoelectric harvesters is not yet known. Here, through finite‐element method simulations, it is shown that the enhanced performance of the porous piezoelectric harvesters is independent of the size and distribution of the pores and only depends on the fractional porosity. Moreover, it is shown that the presence of pores yields the emergence of local stress hot spots that are mainly responsible for improved performance. Moreover, it is suggested that the breakdown issue of the porous piezoelectric layers can be mitigated by poling the structures in a vacuum using electric fields below the threshold field for electron field emission from the piezoelectric layer.https://doi.org/10.1002/apxr.202200042energy harvestingferroelectricsfinite element method simulationspiezoelectricsporosityporous materials |
| spellingShingle | Morteza Hassanpour Amiri Kamal Asadi How Porosity Affects the Performance of Piezoelectric Energy Harvesters and Sensors Advanced Physics Research energy harvesting ferroelectrics finite element method simulations piezoelectrics porosity porous materials |
| title | How Porosity Affects the Performance of Piezoelectric Energy Harvesters and Sensors |
| title_full | How Porosity Affects the Performance of Piezoelectric Energy Harvesters and Sensors |
| title_fullStr | How Porosity Affects the Performance of Piezoelectric Energy Harvesters and Sensors |
| title_full_unstemmed | How Porosity Affects the Performance of Piezoelectric Energy Harvesters and Sensors |
| title_short | How Porosity Affects the Performance of Piezoelectric Energy Harvesters and Sensors |
| title_sort | how porosity affects the performance of piezoelectric energy harvesters and sensors |
| topic | energy harvesting ferroelectrics finite element method simulations piezoelectrics porosity porous materials |
| url | https://doi.org/10.1002/apxr.202200042 |
| work_keys_str_mv | AT mortezahassanpouramiri howporosityaffectstheperformanceofpiezoelectricenergyharvestersandsensors AT kamalasadi howporosityaffectstheperformanceofpiezoelectricenergyharvestersandsensors |