Polarization-free high-crystallization β-PVDF piezoelectric nanogenerator toward self-powered 3D acceleration sensor
By Long Jin, Songyuan Ma, Weili Deng, Cheng Yan, Tao Yang, Xiang Chu, Guo Tian, Da Xiong, Jun Lu, Weiqing Yang. Nano Energy, 2018
174 citations recorded by the source corpus.
Abstract The strong piezoelectric lead zirconate titanate (PZT) ceramic with inherent brittleness and highly tough Poly (vinylidene fluoride) (PVDF) polymer with intrinsic weak piezoelectricity cannot simultaneously fulfill the requirements of high sensitivity and excellent stability as a piezoelectric acceleration sensor in extreme service environments, such as intense impact. Here, we developed a polarization-free high-crystallization β-PVDF (hβ-PVDF) based piezoelectric nanogenerator (PENG) as acceleration sensor with high sensitivity (2.405 nA s2 m−1) and excellent stability (97% remaining after 10000 cycles). Fundamentally, the excellent performance benefits from the PVDF by high-pressure melt crystallization with a high β-phase crystallinity of 86.48%, indicative of the enhanced piezoelectricity (high short-circuit current density of 145 nA cm−2). With integration of PENGs in three axes, the self-powered 3D acceleration sensor is developed for vector acceleration measurement in any directions. Moreover, a dynamic 3D frequency and acceleration sensor system is targetedly applied to cooperate the acceleration sensor for real-time collision monitoring and alert signal transmission, which presents a significant step toward vehicle safety monitoring. Therefore, we believe this easy process of hβ-PVDF and device has potential for commercial production in the field of transportation, self-powered devices, and energy harvesting.
Subfields: Biomedical Engineering, Cognitive Neuroscience, Mechanical Engineering
View Paper: https://www.semanticscholar.org/paper/c38de656b17b7548d3438fd8ed38925a6cde0c4e
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In Biomedical Engineering
In Cognitive Neuroscience
In Mechanical Engineering
Citations in the corpus
- Nanogenerator as new energy technology for self-powered intelligent transportation system (2019, background): “2a shows structure design of the PENG as a selfpowered 3D acceleration sensor [85].”