2014 Fiscal Year Final Research Report
Energy harvesting by porous piezoelectric film
| Project/Area Number |
25630113
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Power engineering/Power conversion/Electric machinery
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| Research Institution | Kumamoto University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Keywords | 環境発電 / 圧電材料 |
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| Outline of Final Research Achievements |
Electricity generation was attempt using porous piezoelectric composite film. As a porous piezoelectric film, lead zirconatate titanate (PZT)/PZT was chosen due to high piezoelectricity, low cost, and fabrication feasibility. As a substrate material, stainless steel was used because of high temperature durability for fabrication process and low cost. The higher the piezoelectric film thickness was, the higher the piezoelectric constant d33 value was. Thhere was no relationship between substrate thickness and the piezoelectric constant d33 when oscillation amplitude was high enough, where as The lower the substrate thickenss was, the higher the piezoelectric constant d33 value was in the case of low oscillation amplitude, such as human pulse. The maximum value of instant electromotive force was around 150mV by human pulse so that this material has potential for electricity generation by fluctuation.
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| Free Research Field |
電気・電子材料
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