Organic phosphonic acid-modified BaTiO3/P(VDF-TrFE) composite with high output in both voltage and power for flexible piezoelectric nanogenerators

Guo, Haipeng; Wu, Qi; Sun, Huajun; Liu, Xiaofang; Sui, Huiting

doi:10.1016/j.mtener.2020.100489

Cited by 31 publications

(19 citation statements)

References 35 publications

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“…Moreover, introducing piezoelectric nanostructure such as ZnO NWs, [141,142] BaTiO 3, [143,144] (K, Na)NbO 3 , [145] and PZT [146] improves piezoelectricity of PVDF. Kar et al [6] used 2D SnO 2 nanosheet.…”

Section: Pvdf Polymermentioning

confidence: 99%

A Comprehensive Review on Piezoelectric Polymeric and Ceramic Nanogenerators

2022

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With the increasing concerns over global warming and the growing demands for electricity, many researchers have considered renewable and sustainable resources for electricity/power generation. [1] Photovoltaics, thermoelectric, and electromagnetic induction are among the well-established technologies for electricity generation. [2] Mechanical energy is one of the most abundant and available resources that can be harvested to generate electricity. For example, mechanical energy is available in the form of human body motion and mechanical vibration. [3][4][5][6] Piezoelectric and triboelectric nanogenerators have both been used for mechanical energy harvesting. In triboelectric nanogenerators, electrical energy originates mainly from friction or temporary contact of two different layers. However, a wide range of deformation modes like bending, stretching, and vibration can generate electricity using piezoelectric nanogenerators (PNGs). The working mechanisms of PNGs are typically easier than triboelectric nanogenerators. [7] In addition, improving electrical output and reproducibility of triboelectric nanogenerators are still challenges. [8] The use of ferroelectric materials is a promising choice for energy harvesting. Ferroelectric materials show both piezoelectric (generation of electrical power from mechanical oscillation) and pyroelectric (generation of electricity from temperature fluctuation) properties. [9,10] Piezoelectric property offers conversion of mechanical energy to electricity. By applying mechanical stress, dipole momentum forms, leading to spontaneous polarization. Consequently, the electric current flows through the piezoelectric materials as a result of charge accumulation. [11] A wide range of piezoelectric materials is used as PNGs. Piezoelectric materials can be categorized into ceramics, polymers, and piezoelectret polymers. Materials with perovskite or wurtzite nanostructures show piezoelectric properties because their crystals are noncentral symmetry. Ceramics with perovskite

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Section: Pvdf Polymermentioning

confidence: 99%

A Comprehensive Review on Piezoelectric Polymeric and Ceramic Nanogenerators

2022

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“…In the case of the triboelectric effect, electrical charges were generated because of the separation or friction of two different materials. The most common approaches used for piezoelectric generators for e-skin applications were based on ZnO nanostructures [161] (the Li-ZnO composite device successfully charged a capacitor with a power density of 0.45 W/cm 3 ), lead zirconate titanate (PZT) films [162], and composite films containing barium titanate nanoparticles (BTO) [163] (reported power density of 0.76 µW cm −2 ).…”

Section: Power Management Approachesmentioning

confidence: 99%

E-Skin: The Dawn of a New Era of On-Body Monitoring Systems

et al. 2021

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Real-time “on-body” monitoring of human physiological signals through wearable systems developed on flexible substrates (e-skin) is the next target in human health control and prevention, while an alternative to bulky diagnostic devices routinely used in clinics. The present work summarizes the recent trends in the development of e-skin systems. Firstly, we revised the material development for e-skin systems. Secondly, aspects related to fabrication techniques were presented. Next, the main applications of e-skin systems in monitoring, such as temperature, pulse, and other bio-electric signals related to health status, were analyzed. Finally, aspects regarding the power supply and signal processing were discussed. The special features of e-skin as identified contribute clearly to the developing potential as in situ diagnostic tool for further implementation in clinical practice at patient personal levels.

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“…However, the high surface energy of BTO makes it vulnerable to agglomeration so as to offset the piezoelectric dipole. The poor interface may also cause leaks and reduce the stress transferability from the substrate to nanoparticles, thus significantly reducing the mechanical energy conversion efficiency. − Consequently, the interface between BTO NWs and PVDF is also a critical issue. Grafting a high-molecular-weight polymer onto the surface of nanomaterials is a simple and effective measure to enhance the interfacial properties. , A compatible interface between nanofiller and matrix can be obtained by grafting polymer onto the surface of nanomaterials by atomic transfer radical polymerization (ATRP).…”

Section: Introductionmentioning

confidence: 99%

Piezoelectric Nanogenerators Based on Electrospun PVDF-Coated Mats Composed of Multilayer Polymer-Coated BaTiO₃ Nanowires

Zhao

Chen

Cheng

et al. 2022

ACS Appl. Nano Mater.

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With the surge in demand for green energy, nanocomposites composed of piezoelectric polymers and nano-piezoelectric ceramics show great prospects in preparing excellent performance piezoelectric nanogenerators (PENGs). However, the agglomeration of the piezoelectric enhancement phase and the low degree of polarization significantly impair the piezoelectric properties of the nanofibers; thus, the output performance of PENGs is severely limited. In this work, barium titanate nanowires piezoelectric ceramics were synthesized by the hydrothermal method. By surface-initiated polymerization, the hyperbranched barium titanate nanowire was surface-grafted with poly(methyl methacrylate) (PMMA). The high dielectric constant and low dielectric loss of hyperbranched polymers lead to higher β-phase content in electrospun nanofilms and suppress current leakage. The PMMA coating results in the uniform dispersion of BaTiO3 nanowires in poly(vinylidene fluoride) (PVDF), thereby enhancing the piezoelectric performance of the fiber nanocomposite PENG. The open circuit voltage and short circuit current of the PENG composed of PVDF and core-double shell PMMA-coated hyperbranched BaTiO3 (BTO@HBP@PMMA) nanowires can reach 3.4 V and 0.32 μA, and the peak output power is 5.25 μW, which is significantly improved compared to that of the unmodified PENG. Furthermore, the flexible PENG has high durability and can continuously generate stable piezoelectric signals for 6000 cycles without decay. The prepared PENG can also efficiently harvest the energy generated by human daily activities. In general, this study provides a new microstructure design for the fabrication of high performance PENGs.

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Organic phosphonic acid-modified BaTiO3/P(VDF-TrFE) composite with high output in both voltage and power for flexible piezoelectric nanogenerators

Cited by 31 publications

References 35 publications

A Comprehensive Review on Piezoelectric Polymeric and Ceramic Nanogenerators

A Comprehensive Review on Piezoelectric Polymeric and Ceramic Nanogenerators

E-Skin: The Dawn of a New Era of On-Body Monitoring Systems

Piezoelectric Nanogenerators Based on Electrospun PVDF-Coated Mats Composed of Multilayer Polymer-Coated BaTiO₃ Nanowires

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Organic phosphonic acid-modified BaTiO3/P(VDF-TrFE) composite with high output in both voltage and power for flexible piezoelectric nanogenerators

Cited by 31 publications

References 35 publications

A Comprehensive Review on Piezoelectric Polymeric and Ceramic Nanogenerators

A Comprehensive Review on Piezoelectric Polymeric and Ceramic Nanogenerators

E-Skin: The Dawn of a New Era of On-Body Monitoring Systems

Piezoelectric Nanogenerators Based on Electrospun PVDF-Coated Mats Composed of Multilayer Polymer-Coated BaTiO3 Nanowires

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Product

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About

Piezoelectric Nanogenerators Based on Electrospun PVDF-Coated Mats Composed of Multilayer Polymer-Coated BaTiO₃ Nanowires