| Autor: |
Jy Kim Ji-Yoon Kim, Hs Roh Hee-Seok Roh, Dj Kim Dong-Jin Kim, Th Sung Tae-Hyun Sung, Ji Hong Jong-In Hong, Ks No Kwang-Soo No, Sb Hong Seung-Bum Hong, Dj Li Dong-Jun Li, Mk Park Moon-Kyu Park, Gun Ahn Ahn |
| Rok vydání: |
2013 |
| Předmět: |
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| Zdroj: |
RSC Advances. 3:3194 |
| ISSN: |
2046-2069 |
| DOI: |
10.1039/c2ra22554a |
| Popis: |
We developed a three-dimensional spring-type piezoelectric energy harvester using a dip-coating method and multi-directional electrode deposition. The energy harvester consists of a bi-layered structure composed of a surface electrode and a ferroelectric polymer, on a conventional spring which has two roles – the core electrode and the mechanical substrate for the ferroelectric polymer. The energy harvester generated an output voltage of up to 88 mV as a function of cycling compression stress, which leads to a piezoelectric constant of 28.55 pC N−1 for unpoled P(VDF-TrFE) films. Since the spring structure significantly decreases the resonance frequency of the harvester, the spring-type energy harvester can effectively generate electricity using low-frequency vibration energy abundant in the nature. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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