摩擦电效应
纳米发生器
材料科学
复合数
聚二甲基硅氧烷
极化
复合材料
压电
聚乙烯醇
陶瓷
能量收集
开路电压
光电子学
电压
铁电性
电气工程
能量(信号处理)
电介质
工程类
统计
数学
作者
Sanjeev R. Gopal,Thamil Selvi Velayutham,Wee Chen Gan,Jian Ye Cheong,Arn Er Soh
出处
期刊:RSC Advances
[The Royal Society of Chemistry]
日期:2023-01-01
卷期号:13 (12): 7921-7928
被引量:1
摘要
A hybrid piezo/triboelectric nanogenerator (H/P-TENG) is designed for mechanical energy harvesting using polymer ceramic composite films; polydimethylsiloxane/Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 (PDMS/BZT-BCT) and polyvinyl alcohol (PVA). A lead-free BZT-BCT piezoelectric ceramic was prepared via solid-state method and blended into PDMS to form a series of polymer-ceramic composite films, ranging from 5% to 30% by weight. The films were forward/reverse poled with corona poling and their electrical properties were compared to non-poled samples. The H/P-TENG constructed with forward-poled 15 wt% BZT-BCT in PDMS achieved the highest open-circuit voltage, Voc of 127 V, short-circuit current density, Jsc of 67 mA m-2, short-circuit charge density, Qsc of 118 μC m-2, and peak power density of 7.5 W m-2, an increase of 190% over pristine PDMS-based TENG. It was discovered that incorporating BZT-BCT into the PDMS matrix improved the triboelectric properties of PDMS. The overlapping electron cloud (OEC) model was used to explain the enhancement and the effect of poling direction of the PDMS/BZT-BCT composite used in H/P-TENG, providing fundamental knowledge of the influence of piezoelectric polarisation on contact electrification.
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