BaTiO3@PVDF-TrFE nanocomposites with efficient orientation prepared via phase separation nano-coating method for piezoelectric performance improvement and application to 3D-PENG

Cho, Yujang; Jeong, Jaeseon; Choi, Minseok; Baek, Gyunpyo; Park, Gwan Soo; Choi, Hyeongsub; Ahn, Seongcheol; Cha, Seokjun; Kim, Taeyun; Kang, Dong Soo; Bae, Ji-Hyun; Park, Jong Jin

doi:10.1016/j.cej.2021.131030

Cited by 66 publications

(54 citation statements)

References 46 publications

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“…In the literature, various groups have reported that ferroelectric materials like PZT, , BaTiO 3 , , NaNbO 3 , etc. show the piezoelectric effect.…”

Section: Introductionmentioning

confidence: 99%

Synergistic Effect of Polyurethane in Polyurethane–Poly(vinylidene fluoride) Nanofiber-Based Stretchable Piezoelectric Nanogenerators (S-PENGs)

Kaur

Meena

Jassal

et al. 2022

ACS Appl. Polym. Mater.

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Poly(vinylidene fluoride) (PVDF)-based piezoelectric nanogenerators, though flexible, exhibit poor stretchability and mechanical stability. This limits their application for harvesting energy from repeated deformations arising from human articular motions. Herein, we propose a simple and cost-effective approach to overcome the above issues while simultaneously enhancing the piezoelectric effect of PVDF by mixing a small amount of polyurethane (PU) in PVDF–PU nanofibers. The presence of PU in PVDF could enhance electroactive phases by up to 46%, as measured by Fourier transform infrared (FTIR) spectroscopy. Interestingly, an addition of 21% of PU in PVDF exhibited both an increase in the d 33 value from 3.02 to 7.064 pm/V and stretchability to 90%. For developing a stretchable piezoelectric nanogenerator (S-PENG) device, stretchable electrodes with a 4.5 gauge factor at 100% strain were fabricated by spin-coating of poly(3,4-ethylenedioxythiophene) poly(styrene sulfonate) (PEDOT:PSS):graphene nanoplates on a prestrained PU substrate. S-PENG produced 3.8 V, 0.65 μA, and 0.48 μW/cm2 peak open-circuit voltage, short-circuit current, and power density during cyclic deformation, respectively, with electrical and mechanical stability for at least 2000 cycles. Its performance was demonstrated for various human articular motions related to the knee, elbow, and foot by integrating it with wearables. The generated energy from the S-PENG could readily charge capacitors up to ∼650 mV in just 100 s. The designed S-PENGs showed great potential in harvesting energy from simple human motions.

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“…In the literature, various groups have reported that ferroelectric materials like PZT, , BaTiO 3 , , NaNbO 3 , etc. show the piezoelectric effect.…”

Section: Introductionmentioning

confidence: 99%

Synergistic Effect of Polyurethane in Polyurethane–Poly(vinylidene fluoride) Nanofiber-Based Stretchable Piezoelectric Nanogenerators (S-PENGs)

Kaur

Meena

Jassal

et al. 2022

ACS Appl. Polym. Mater.

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“…Such materials have been seen to be applicable in a wide range of devices, with polymer-based materials being more preferred due to their intrinsic flexible nature, providing a great degree of bending and biodegradability 17 , 18 . Among all piezoelectric polymers, poly(vinylidene fluoride) (PVDF) films have shown the highest piezoelectric performances to date 19 – 21 . Due to the polar crystalline nature of PVDF, its ability to produce large voltages with low forces has made it favorable for piezoelectric applications 20 , 22 , 23 .…”

Section: Introductionmentioning

confidence: 99%

Stretchable nanofibers of polyvinylidenefluoride (PVDF)/thermoplastic polyurethane (TPU) nanocomposite to support piezoelectric response via mechanical elasticity

Shehata

Nair

Boualayan

et al. 2022

Sci Rep

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Interest in piezoelectric nanocomposites has been vastly growing in the energy harvesting field. They are applied in wearable electronics, mechanical actuators, and electromechanical membranes. In this research work, nanocomposite membranes of different blend ratios from PVDF and TPU have been synthesized. The PVDF is responsible for piezoelectric performance where it is one of the promising polymeric organic materials containing β-sheets, to convert applied mechanical stress into electric voltage. In addition, the TPU is widely used in the plastic industry due to its superior elasticity. Our work investigates the piezoresponse analysis for different blending ratios of PVDF/TPU. It has been found that TPU blending ratios of 15–17.5% give higher output voltage at different stresses conditions along with higher piezosensitivity. Then, TPU addition with its superior mechanical elasticity can partially compensate PVDF to enhance the piezoelectric response of the PVDF/TPU nanocomposite mats. This work can help reducing the amount of added PVDF in piezoelectric membranes with enhanced piezo sensitivity and mechanical elasticity.

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“…The external force at this time was 80 N, and a frequency of 2.5 Hz was measured. [69] Open-circuit voltages of the HVCI-TENG were measured using a DPO2012B digital phosphor oscilloscope which internal resistance 1 MΩ, and the short-circuit current of the HVCI-TENG was measured using a low-noise current preamplifier (Stanford Research Systems Inc., SR570). The surface charge density of the HVCI-TENG was measured using a source meter (Keithley 6514).…”

Section: Methodsmentioning

confidence: 99%

Controllable Triboelectric Series Using Gradient Positive and Negative Charge‐Confinement Layer with Different Particle Sizes of Mesoporous Carbon Materials

et al. 2022

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As a method to maximize the energy efficiency of triboelectric nanogenerators (TENGs), high‐voltage charge injection (HVCI) on the surface is a simple and effective method for increasing surface charge densities. In this study, positive and negative triboelectric series are controlled using a 3‐layer gradient charge‐confinement wherein the particle sizes of the mesoporous carbon spheres (mCSs) are sequentially arranged depending on the external surface area of the mCSs. In the gradient charge‐confinement layers of this study, the mCS with different sizes perform charge transport from the surface to a deep position during HVCI while mitigating the charge loss through charge confinement to induce the high space charge densities. Through this process, the output voltage—which is initially 15.2 V—is measured to be 600 V after HVCI, thus representing an increase of about 40 times. Further, to amplify the low output current, which is a disadvantage of triboelectric energy, two types of electrical energy—triboelectric and electromagnetic energy—are produced in single mechanical motion. As a result, the output current produced by the cylindrical TENG and electromagnetic generator is recorded as being 1300 times higher, increasing from 12.8 µA to 17.5 mA.

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BaTiO3@PVDF-TrFE nanocomposites with efficient orientation prepared via phase separation nano-coating method for piezoelectric performance improvement and application to 3D-PENG

Cited by 66 publications

References 46 publications

Synergistic Effect of Polyurethane in Polyurethane–Poly(vinylidene fluoride) Nanofiber-Based Stretchable Piezoelectric Nanogenerators (S-PENGs)

Synergistic Effect of Polyurethane in Polyurethane–Poly(vinylidene fluoride) Nanofiber-Based Stretchable Piezoelectric Nanogenerators (S-PENGs)

Stretchable nanofibers of polyvinylidenefluoride (PVDF)/thermoplastic polyurethane (TPU) nanocomposite to support piezoelectric response via mechanical elasticity

Controllable Triboelectric Series Using Gradient Positive and Negative Charge‐Confinement Layer with Different Particle Sizes of Mesoporous Carbon Materials

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