{"title":"Tailoring asymmetrical piezoelectric responses in PVDF-TrFE composites for advanced energy storage applications","authors":"Yu-Liang Hsiao , Yen-Ting Chen , Chuan-Pu Liu","doi":"10.1016/j.nwnano.2024.100065","DOIUrl":null,"url":null,"abstract":"<div><div>This study explores the phenomenon of asymmetrical piezoelectric output in Polyvinylidene Fluoride-Trifluoroethylene (PVDF-TrFE) based piezoelectric nanogenerators (PENGs), which have significant implications for improving the efficiency of energy harvesting devices, particularly in charging advanced energy storage applications. By leveraging the viscoelastic properties of PVDF-TrFE, we demonstrate pronounced asymmetry in piezoelectric output when the force frequency surpasses the polymer's natural recovery time, explicitly using an applied force of 60 N at frequencies ranging from 0.3 Hz to 1.25 Hz. These finding sheds light on the dynamic behavior of piezoelectric polymers under high-frequency stimuli and opens avenues for designing advanced energy harvesting devices.</div></div>","PeriodicalId":100942,"journal":{"name":"Nano Trends","volume":"9 ","pages":"Article 100065"},"PeriodicalIF":0.0000,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nano Trends","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2666978124000357","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/12/5 0:00:00","PubModel":"Epub","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
This study explores the phenomenon of asymmetrical piezoelectric output in Polyvinylidene Fluoride-Trifluoroethylene (PVDF-TrFE) based piezoelectric nanogenerators (PENGs), which have significant implications for improving the efficiency of energy harvesting devices, particularly in charging advanced energy storage applications. By leveraging the viscoelastic properties of PVDF-TrFE, we demonstrate pronounced asymmetry in piezoelectric output when the force frequency surpasses the polymer's natural recovery time, explicitly using an applied force of 60 N at frequencies ranging from 0.3 Hz to 1.25 Hz. These finding sheds light on the dynamic behavior of piezoelectric polymers under high-frequency stimuli and opens avenues for designing advanced energy harvesting devices.
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