Affiliation:
1. Center on Nanoenergy Research, Institute of Science and Technology for Carbon Peak & Neutrality Key Laboratory of Blue Energy and Systems Integration (Guangxi University), Education Department of Guangxi Zhuang Autonomous Region State Key Laboratory of Featured Metal Materials and Life‐cycle Safety for Composite Structures School of Physical Science & Technology Guangxi University Nanning 530004 China
2. Division of Electrical and Magnetic Metrology & Test Guangxi Institute of Metrology and Test Nanning 530004 China
Abstract
AbstractPiezoelectric nanogenerator (PENG) produces stable electrical signals in response to external mechanical stimuli and holds promise in the fields of flexible sensors and smart wearable devices. In practice, a high‐performance PENG with a straightforward structure and exceptional reliability is deeply desired. This study optimally synthesizes piezoelectric composites comprising polyvinylidene fluoride (PVDF) incorporated with barium titanate (BTO) nanoparticles (NPs) and fabricated a PENG with heightened sensitivity by using the electrospinning technique. The polar β‐phase content of the dual‐optimized BTO‐PVDF (barium titanate and polyvinylidene fluoride) electrospun fiber reaches up to 82.39%. In the bending mode, it achieves a remarkable maximum open‐circuit voltage of 19.152 V, a transferred charge of 8.058 nC, and an output voltage per unit area of 2.128 V cm−2. Under vertical pressure conditions, the BP‐PENG exhibits an impressive voltage of 12.361 V while the force is 2.156 N, demonstrating a notable pressure sensing sensitivity of 5.159 V kPa−1, with an excellent linear relationship. Furthermore, the BP‐PENG displays sensitive sensing features in monitoring hand movements. The sensitive response and high performance make it promising for applications in human motion monitoring and smart wearable devices.
Subject
Materials Chemistry,Polymers and Plastics,Organic Chemistry