A5053523410- Advanced Sensor and Energy Harvesting Materials
- Dielectric materials and actuators
- Innovative Energy Harvesting Technologies
- Carbon Nanotubes in Composites
- Graphene research and applications
- Conducting polymers and applications
- Mechanical Behavior of Composites
- Ultrasonics and Acoustic Wave Propagation
- Smart Materials for Construction
- Fiber-reinforced polymer composites
- Thermal properties of materials
- Tactile and Sensory Interactions
- Graphene and Nanomaterials Applications
- Geophysical Methods and Applications
- Nanotechnology research and applications
- Non-Destructive Testing Techniques
- Analytical Chemistry and Sensors
- Supercapacitor Materials and Fabrication
- Polymer Nanocomposites and Properties
- Surface and Thin Film Phenomena
- Tribology and Wear Analysis
- Structural Health Monitoring Techniques
- Gas Sensing Nanomaterials and Sensors
- Material Properties and Applications
- Energy Harvesting in Wireless Networks
Chongqing University
2014-2023
Chiba University
2012-2014
Zhejiang University
2013-2014
Abstract In recent years, PVDF(polyvinylidene fluoride) and its copolymers have attracted great attention in the development of energy-harvesting devices because their unique properties such as good flexibility, environmental friendliness, high halogen acid resistance, lightweight biocompatibility. Compared to most commonly used PZT (lead zirconate titanate), piezoelectricity PVDF copolymer-based materials is relatively low. To further expand applications PVDF, there an urgent need for...
We improved the piezoelectric property of poly(vinylidene fluoride) (PVDF) by employing graphene. The reduced graphene oxide (rGO)–PVDF nanocomposites were prepared a solution casting method and rGO contents ranged from 0.0 wt% to 0.2 wt%. To induce β-phase crystal structure, nanocomposite films drawn in ratio 4–5 polarized step-wise poling method. evaluate property, output voltages rGO–PVDF measured through extensive experimental vibration tests. results show that film with 0.05 loading...
We report a substantial improvement of piezoelectricity for poly(vinylidene fluoride-hexafluoropropylene) (PVDF-HFP) copolymer films by introducing carbon black (CB) into the PVDF-HFP to form PVDF-HFP/CB composite films. The optimized output voltage film at an optimal CB content 0.5 wt% is found be 204% pristine film. Its harvested electrical power density 464% and 561% using ac dc circuits, respectively. Through Fourier transform infrared spectroscopy analysis, differential scanning...
The interfacial mechanical properties between graphene (GR) and a polymer matrix play key role in load transfer capability for GR/polymer nanocomposites.
The synergistic effects of surface treatment and interleaf on the interlaminar mechanical properties glass fiber-aluminum laminates were studied. Aluminum sheets treated with alkaline etching. Meanwhile, a graphene oxide (GO) was introduced between aluminum sheet fiber-reinforced epoxy composite. Double cantilever beam end-notched flexure tests employed to evaluate fracture toughness laminates. obtained results show that toughening efficiency is dependent characteristics as well GO loading....
High piezoelectric composite films composed of poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) and ferromagnetic cobalt ferrite (CoFe2O4) (0.00 wt% to 0.2 wt%) are prepared by a solution casting method accompanied uniaxial stretching high electric field poling. The decisive effect the poling on power generating capability was confirmed experiments. For pure PVDF-HFP films, when maximum Emax is 120 MV/m, calibrated open circuit voltage reaches 2.93 V, which much higher than...
Mechanism clarification of the phase transformation in three stages,<italic>i.e.</italic>initial crystallization, stretching and poling.
Interface topography has great impact on thermal energy transport across the GR/h-BN heterostructure interface.
Triboelectric nanogenerators (TENGs) have been in spotlight for their excellent capability to drive miniature electronics.
Abstract Boosting the output performance of triboelectric nanogenerators via some unique methods is always a meaningful way to speed up their commercialization. However, available approach boost mainly restricted one physics effect based and basic research boosting mutual coupling effects little research. Herein, new strategy creatively proposed on charge traps from effects, generated g‐C 3 N 4 /MXene‐Au composites, further promote nanogenerator. It found that photon‐generated carriers...
Abstract Poly(vinylidene fluoride) (PVDF) and its copolymers have been widely studied due to their excellent piezoelectricity ferroelectricity. In this study, composite films are prepared by adding Ni nanoparticles (0.00–0.3 wt%) into poly(vinylidene fluoride- co -hexafluoropropylene) (PVDF–HFP) matrix solution casting, uniaxial stretching, high electric field poling. It is found that when the maximum E max for poling 130 MV m −1 , calibrated open circuit voltage of pure PVDF–HFP reaches...