Er3+/Fe3+ Stimulated Electroactive, Visible Light Emitting, and High Dielectric Flexible PVDF Film Based Piezoelectric Nanogenerators: A Simple and Superior Self-Powered Energy Harvester with Remarkable Power Density

2017 ◽  
Vol 9 (27) ◽  
pp. 23048-23059 ◽  
Author(s):  
Nur Amin Hoque ◽  
Pradip Thakur ◽  
Swagata Roy ◽  
Arpan Kool ◽  
Biswajoy Bagchi ◽  
...  
Keyword(s):  
Visible Light ◽  
Power Density ◽  
Energy Harvester ◽  
Pvdf Film ◽  
Light Emitting ◽  
Self Powered ◽  
High Dielectric ◽  
Piezoelectric Nanogenerators

scholarly journals Power Density Improvement of Piezoelectric Energy Harvesters via a Novel Hybridization Scheme with Electromagnetic Transduction

Micromachines ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 803
Author(s):  
Zhongjie Li ◽  
Chuanfu Xin ◽  
Yan Peng ◽  
Min Wang ◽  
Jun Luo ◽  
...  
Keyword(s):  
Power Density ◽  
Output Power ◽  
Energy Harvester ◽  
Hybrid Energy ◽  
Energy Harvesters ◽  
Piezoelectric Patch ◽  
Piezoelectric Energy ◽  
Electromagnetic Transduction ◽  
Self Powered ◽  
Power Densities

A novel hybridization scheme is proposed with electromagnetic transduction to improve the power density of piezoelectric energy harvester (PEH) in this paper. Based on the basic cantilever piezoelectric energy harvester (BC-PEH) composed of a mass block, a piezoelectric patch, and a cantilever beam, we replaced the mass block by a magnet array and added a coil array to form the hybrid energy harvester. To enhance the output power of the electromagnetic energy harvester (EMEH), we utilized an alternating magnet array. Then, to compare the power density of the hybrid harvester and BC-PEH, the experiments of output power were conducted. According to the experimental results, the power densities of the hybrid harvester and BC-PEH are, respectively, 3.53 mW/cm3 and 5.14 μW/cm3 under the conditions of 18.6 Hz and 0.3 g. Therefore, the power density of the hybrid harvester is 686 times as high as that of the BC-PEH, which verified the power density improvement of PEH via a hybridization scheme with EMEH. Additionally, the hybrid harvester exhibits better performance for charging capacitors, such as charging a 2.2 mF capacitor to 8 V within 17 s. It is of great significance to further develop self-powered devices.

Self Powered Flexible Electronics Based on Self Poled “Ferroelectretic” Nanogenerator

MRS Advances ◽  
2016 ◽  
Vol 1 (45) ◽  
pp. 3083-3088 ◽  
Author(s):  
Sujoy Kumar Ghosh ◽  
Dipankar Mandal
Keyword(s):  
Composite Film ◽  
Flexible Electronics ◽  
Light Emitting Diode ◽  
Open Circuit ◽  
Pvdf Film ◽  
Light Emitting ◽  
Single Finger ◽  
Finger Touch ◽  
Self Powered ◽  
Pure Pvdf

ABSTRACTA ferroelectric nanogenerator without any electric poling treatment has been realized by incorporation of ytterbium (Yb) salt incorporated porous PVDF composite film. The composite film compose of electroactive β- and γ-phases, demonstrates higher dielectric and ferroelectric polarization responses than pure PVDF film. The 3 V of open circuit voltage with 0.47 µW/cm2 power density was generated by the nanogenerator upon single finger touch. It can also operate capacitor and light emitting diode without any subsidiary batteries.

Self-powered fully-flexible light-emitting system enabled by flexible energy harvester

2014 ◽  
Vol 7 (12) ◽  
pp. 4035-4043 ◽  
Author(s):  
Chang Kyu Jeong ◽  
Kwi-Il Park ◽  
Jung Hwan Son ◽  
Geon-Tae Hwang ◽  
Seung Hyun Lee ◽  
...  
Keyword(s):  
High Performance ◽  
Energy Harvester ◽  
Optoelectronic Device ◽  
Light Emitting ◽  
Piezoelectric Energy ◽  
Led Array ◽  
Self Powered

We present a self-powered all-flexible light-emitting optoelectronic device using a flexible and high-performance piezoelectric energy harvester with a robustly developed flexible and vertically structured inorganic LED array.

Designing high energy conversion efficient bio-inspired vitamin assisted single-structured based self-powered piezoelectric/wind/acoustic multi-energy harvester with remarkable power density

Nano Energy ◽  
2019 ◽  
Vol 59 ◽  
pp. 169-183 ◽  
Author(s):  
Sumanta Kumar Karan ◽  
Sandip Maiti ◽  
Anand Kumar Agrawal ◽  
Amit Kmar Das ◽  
Anirban Maitra ◽  
...  
Keyword(s):  
Energy Conversion ◽  
Power Density ◽  
Energy Harvester ◽  
High Energy ◽  
Self Powered

Self-Powered Interface External Circuit for Low-Frequency Acoustic Energy Harvester

2013 ◽  
Author(s):  
Bin Li ◽  
Jeong Ho You ◽  
Yong-Joe Kim
Keyword(s):  
Power Density ◽  
Energy Harvester ◽  
Low Frequency ◽  
Simulation Software ◽  
Acoustic Energy ◽  
External Circuit ◽  
Interface Circuit ◽  
Harvesting Efficiency ◽  
Self Powered ◽  
Piezoelectric Plates

We present a self-powered interface external circuit design for multiple piezoelectric oscillators used in our recently developed low-frequency acoustic energy harvester. A synchronized switch harvesting on inductor (SSHI) interface circuit has exhibited a significant improvement in the energy harvesting efficiency of piezoelectric oscillator, compared with a standard circuit in AC/DC conversion. A self-powered SSHI interface circuit was developed to overcome the difficulties of typical SSHI, such as the requirements for external power and displacement sensor. The previous studies on self-powered SSHI only considered a single piezoelectric oscillator. The electrical response and operation of multiple piezoelectric oscillators in self-powered SSHI interface circuit has not been reported. In our previous study, multiple piezoelectric cantilever plates were installed in a quarter-wavelength tube resonator to harvest acoustic energy. The interface circuit for our acoustic energy harvester was not further discussed. In this study, a self-powered series-SSHI circuit (self-powered S-SSHI) for multiple cantilever piezoelectric plates has been studied by circuit simulation software Multisim. The simulation results indicate the total powers increase linearly with the piezoelectric plate numbers for both standard and self-powered S-SSHI circuits. The harvesting efficiency for multiple piezoelectric plates of self-powered S-SSHI is obviously higher than the standard circuit. The total maximum output power of 5 piezoelectric plates reaches 8.417 mW with the areal power density 0.421 mW/cm2. This is 335.2% better than the standard circuit (1.934 mW with the areal power density 0.0967 mW/cm2). Compared with the standard circuit, self-powered S-SSHI circuit significantly enhances the conversion efficiency by increasing the piezoelectric voltages and reducing the phase shifts between piezoelectric sources currents and voltages.

scholarly journals Electrode and electrolyte configurations for low frequency motion energy harvesting based on reverse electrowetting

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Pashupati R. Adhikari ◽  
Nishat T. Tasneem ◽  
Russell C. Reid ◽  
Ifana Mahbub
Keyword(s):  
Energy Harvesting ◽  
Bias Voltage ◽  
Energy Harvester ◽  
Superior Performance ◽  
Maximum Output ◽  
Electrowetting On Dielectric ◽  
External Bias ◽  
Motion Energy ◽  
Ac Current ◽  
Self Powered

AbstractIncreasing demand for self-powered wearable sensors has spurred an urgent need to develop energy harvesting systems that can reliably and sufficiently power these devices. Within the last decade, reverse electrowetting-on-dielectric (REWOD)-based mechanical motion energy harvesting has been developed, where an electrolyte is modulated (repeatedly squeezed) between two dissimilar electrodes under an externally applied mechanical force to generate an AC current. In this work, we explored various combinations of electrolyte concentrations, dielectrics, and dielectric thicknesses to generate maximum output power employing REWOD energy harvester. With the objective of implementing a fully self-powered wearable sensor, a “zero applied-bias-voltage” approach was adopted. Three different concentrations of sodium chloride aqueous solutions (NaCl-0.1 M, NaCl-0.5 M, and NaCl-1.0 M) were used as electrolytes. Likewise, electrodes were fabricated with three different dielectric thicknesses (100 nm, 150 nm, and 200 nm) of Al2O3 and SiO2 with an additional layer of CYTOP for surface hydrophobicity. The REWOD energy harvester and its electrode–electrolyte layers were modeled using lumped components that include a resistor, a capacitor, and a current source representing the harvester. Without using any external bias voltage, AC current generation with a power density of 53.3 nW/cm2 was demonstrated at an external excitation frequency of 3 Hz with an optimal external load. The experimental results were analytically verified using the derived theoretical model. Superior performance of the harvester in terms of the figure-of-merit comparing previously reported works is demonstrated. The novelty of this work lies in the combination of an analytical modeling method and experimental validation that together can be used to increase the REWOD harvested power extensively without requiring any external bias voltage.

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