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Polarization- and Electrode-Optimized Polyvinylidene Fluoride Films for Harsh Environmental Piezoelectric Nanogenerator Applications

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Abstract
While piezoelectric nanogenerators have demonstrated the effective conversion of tiny mechanical vibrations to electricity, their performances are rarely examined under harsh environmental conditions. Here, a multilayered polyvinylidene fluoride (PVDF) film-based piezoelectric nanogenerator (ML-PENG) is demonstrated to generate considerable and stable power outputs even at extremely low temperatures and pressures, and under strong UV. Up-/down-polarized PVDF films are alternately stacked, and Ag electrodes are intercalated between the two adjacent films. At ?266 °C and 10?5 Torr, the ML-PENG generates an open-circuit voltage of 1.1 V, a short-circuit current density of 8 nA cm?2, and a power density of 4.4 nW cm?2. The piezoelectric outputs are quite stable against prolonged illumination of UV, large temperature- and pressure-variations, and excessive mechanical vibrations. The piezoelectric power density is greatly enhanced above the freezing and glass transition temperatures of PVDF and recorded to be 10, 105, and 282 nW cm?2 at ?73, 0, and 77 °C, respectively. The ML-PENG generates sufficient power to operate five light-emitting diodes by harvesting biomechanical energy under simulated Martian conditions. This work suggests that polarization- and electrodeoptimized ML-PENG can serve as a reliable and economic power source in harsh and inaccessible environments like polar areas of Earth and extraterrestrial Mars.
Author(s)
진다운고영준안창원허성훈이태권정동근이민백강종윤정종훈
Issued Date
2021
Type
Article
Keyword
Electric generatorsFluoride treatmentFluorine compoundsharsh environmentinaccessible locationLight-emitting diodesMarsMars (Planet)piezoelectric nanogeneratorPolyvinylidene fluoride
DOI
10.1002/smll.202007289
URI
https://oak.ulsan.ac.kr/handle/2021.oak/9503
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_proquest_miscellaneous_2501260902&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,Polarization-%20and%20Electrode-Optimized%20Polyvinylidene%20Fluoride%20Films%20for%20Harsh%20Environmental%20Piezoelectric%20Nanogenerator%20Applications&offset=0&pcAvailability=true
Publisher
Small
Location
독일
Language
영어
ISSN
1613-6810
Citation Volume
17
Citation Number
14
Citation Start Page
2007289
Citation End Page
2007289
Appears in Collections:
Natural Science > Physics
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