材料科学
纳米片
压电
云母
电容感应
复合材料
电容
电介质
电容器
光电子学
电压
纳米技术
电气工程
电极
工程类
物理化学
化学
作者
Mohammed Khalifa,Elisabeth Anna Schoeffmann,Herfried Lammer,Arunjunai Raj Mahendran,Günter Wuzella,S. Anandhan
出处
期刊:Soft Matter
[The Royal Society of Chemistry]
日期:2021-01-01
卷期号:17 (48): 10891-10902
被引量:8
摘要
Herein, a multifunctional poly(vinylidene fluoride) (PVDF)/mica nanosheet composite (PMNC) thin film was developed for preparing a capacitive and piezoelectric force sensor. A high electroactive γ-phase content (89%) of PVDF was achieved through a facile rapid cooling process of PMNC films. The crystallinity of PVDF decreased upon the addition of mica nanosheets, while the dielectric constant increased significantly (∼300%). The capacitance-based PMNC pressure sensor was found to be sensitive to the applied pressure. On the other hand, piezoelectric voltages of 18 V (single layer) and 32 V (multi-layer) were generated for PMNCs loaded with 1% mica nanosheets. Furthermore, a PMNC based nanogenerator generated a power density of 8.8 μW cm-2 and showed excellent durability (>60 000 cycles). High flexibility, lightweight and skin-friendly PMNCs could be a potential material in applications such as energy harvesting, energy storage, actuators, and self-powered and smart wearable electronic devices.
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