Boosting piezoelectric and triboelectric effects of PVDF nanofiber through carbon-coated piezoelectric nanoparticles for highly sensitive wearable sensors

Li, Xiaoxia; Ji, Dongxiao; Yu, Bingxue; Ghosh, Rituparna; He, Ji‐Huan; Qin, Xiaohong; Ramakrishna, Seeram

doi:10.1016/j.cej.2021.130345

Cited by 60 publications

(54 citation statements)

References 44 publications

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“…28,29 To overcome the above limitations, the tailoring of the nanomaterials and PVDF hybrid membrane has received much attention. Several studies have indicated driving the crystallization of the β phrase by adding additives, such as carbon-coated zinc oxide, 30 graphene oxide, 31,32 BaTiO 3 , 33,34 CoFe 2 O 4 , 28,35 and SnO 2 . 36 Furthermore, TENG performance based on PVDF has demonstrated promising results by incorporating their nanomaterials into the PVDF membrane.…”

Section: Introductionmentioning

confidence: 99%

“…36 Furthermore, TENG performance based on PVDF has demonstrated promising results by incorporating their nanomaterials into the PVDF membrane. 21,30,37 However, the PVDF hybrid membranes are challenging to regulate because both the distribution of the nanomaterials and the β phase formation must be controlled. In addition, the nanomaterials were frequently employed as-prepared, without any surface functionalization, meaning that only electrostatic interaction is main factor to control the desirable polymer morphology.…”

Section: Introductionmentioning

confidence: 99%

“…Several studies have indicated driving the crystallization of the β phrase by adding additives, such as carbon‐coated zinc oxide, 30 graphene oxide, 31,32 BaTiO 3 , 33,34 CoFe 2 O 4 , 28,35 and SnO 2 36 . Furthermore, TENG performance based on PVDF has demonstrated promising results by incorporating their nanomaterials into the PVDF membrane 21,30,37 . However, the PVDF hybrid membranes are challenging to regulate because both the distribution of the nanomaterials and the β phase formation must be controlled.…”

Section: Introductionmentioning

confidence: 99%

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Functionalized graphene oxide/polyvinylidene fluoride composite membrane acting as a triboelectric layer for hydropower energy harvesting

Ahn

2022

Intl J of Energy Research

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Liquid-solid triboelectric nanogenerator (TENG) has received much attention as a promising electricity generation mechanism for renewable energy sources and self-powered electronic devices. Thus, enhancing TENG performance is a critical issue to be concerned for both practical and industrial applications.Hence, in this study, for the first time, the liquid-solid TENG based on functionalized graphene oxide (F-GO) and polyvinylidene fluoride (PVDF) composite membranes containing various F-GO concentrations were fabricated using the blade coating process. The surface of GO nanosheets was functionalized through covalent graft by using 1H,1H,2H,2H-perfluorooctyltriethoxysilane (FOTS). As indicated in FE-SEM images, the miscibility of the F-GO containing fluorine group in PVDF was effectively improved, which was created favorable conditions for PVDF crystallization and β phase configuration. Thus, the dielectric and polarization characteristics of the F-GO/PVDF membranes were greatly improved, eventuating in a rise in the output performance of F-GO/PVDF-based TENG. As a consequence, the F-GO/PVDF TENG generates 0.14 mW of output power from a single water droplet, which is 7 times more than PVDF TENG and 1.8 times higher than GO/PVDF TENG. It is proved the addition of functionalized GO nanosheets in PVDF is very effective for hydropower energy harvesting based on liquid-solid TENG.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Functionalized graphene oxide/polyvinylidene fluoride composite membrane acting as a triboelectric layer for hydropower energy harvesting

Ahn

2022

Intl J of Energy Research

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“…Individual protection equipment mainly applies fiber filter membranes to achieve efficient filtration of dust particles, and the performance of the filter membrane directly affects whether it can play an effective protective role for miners. Polyvinylidene fluoride has excellent mechanical properties [ 11 , 12 , 13 , 14 ], chemical resistance, biocompatibility, etc. These excellent properties of PVDF and the structural uniqueness of electrospun nanofibers make PVDF nanofiber membranes widely used [ 15 , 16 , 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

Dual-Structure PVDF/SDS Nanofibrous Membranes for Highly Efficient Personal Protection in Mines

Zhou

Liu

et al. 2022

Membranes

Self Cite

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Pneumoconiosis in miners is considered a global problem. Improving the performance of individual protective materials can effectively reduce the incidence of pneumoconiosis. In this study, the blend membrane of sodium dodecyl sulfate and polyvinylidene fluoride with a dual structure was prepared using electrospinning techniques, and the morphological structure, fiber diameter, and filtration performance of the nanofiber membranes were optimized by adjusting the PVDF concentration and SDS content. The results show that the incorporation of SDS enabled the nanofiber membranes to show tree-like and beaded fibers. Compared with the original PVDF membrane, the small content of tree-like fibers and beaded fibers can improve the filtration efficiency and reduce the resistance of the fiber membrane. The prepared nanofiber membrane has excellent comprehensive filtration performance, and the quality factor is 0.042 pa−1 when the concentration of PVDF is 10 wt% and the addition of SDS is 0.1 wt%. Furthermore, after high-temperature treatment, the membrane could still maintain good filtration performance. The PVDF/SDS blend nanofiber membrane has outstanding filtration efficiency and good thermal stability and can fully meet the personal protection of miners in underground high-temperature operation environments.

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“…Nonetheless, the lower piezoelectric coefficient of PVDF ( d 33 = 24–34 pC/N) as compared with inorganic ceramics limits its wide applications for high-power PENGs . To date, numerous efforts have been made to achieve a higher amount of β-phase in PVDF in order to enhance the piezoelectricity. , These approaches generally involve mechanical stretching and/or electric poling to induce β-phase through phase transformation, which, however, requires extra equipment and complicates the processing routes. , Although the electrospinning technique has been extensively adopted to obtain PVDF nanofibers rich in β-phase through a combined in situ molecular stretching and electric poling process, , the mechanical stability and durability of nanofibrous nanogenerators remain an open question, as well as the sensibility when working under a larger pressure. In recent years, of particular interest is the introduction of nanofillers in the PVDF matrix, such as carbon nanotubes, graphene, zinc oxide, and barium titanate nanoparticles, which allows us to effectively promote β-phase nucleation with improved piezoelectricity.…”

Section: Introductionmentioning

confidence: 99%

Highly Tunable Piezoelectricity of Flexible Nanogenerators Based on 3D Porously Architectured Membranes for Versatile Energy Harvesting and Self-Powered Multistimulus Sensing

Lian

Cheng

et al. 2021

ACS Sustainable Chem. Eng.

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The development of inherently flexible nanogenerators that can effectively convert various environmental resources (pressure, magnetism, solvents, etc.) into electricity is highly desirable for developing sustainable energy. Herein, we demonstrate a flexible piezoelectric nanogenerator with highly tunable piezoelectricity, high sensitivity, and multistimulus sensing capability based on the 3D porous architecture of the poly-(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) nanocomposite membrane featured by interconnected networkinterfaced magnetic Fe 3 O 4 nanoparticles. Fe 3 O 4 nanoparticles are incorporated to endow the nanogenerator with responsiveness to magnetism. The porous membrane is fabricated by a scalable, template-free, nonsolvent-induced phase-separation approach. By modulating the liquid−liquid demixing separation and nanoparticle migration, pore sizes of the spongy network are effectively tuned over a wide range, by which the porosity, flexibility, and electroactive crystal growth are significantly enhanced. Consequently, the device produces an enhanced piezoelectricity with a superior piezoelectric coefficient d 33 of 48.6 pC/N, a sensitivity of 294 mV/N, a power density of 5.3 μW/cm 3 , and stable electricity-generating performance over 10,000 repetitions. Significant enhancements over the pristine nonporous control are attributed to the facilitated structural deformation, localized stress concentration, and the electroactive crystal promotion. More intriguingly, beyond the response to the contact pressure, the nanogenerator can also yield continuous electric power in response to the magnetic field and organic solvent vapor due to the actuation-driven piezoelectric effects. The versatile nanogenerator with multiple responsiveness permits the self-powered smart sensing of various ambient stimuli and the simultaneous harvesting of the associated energies in both contact and noncontact working modes. This study demonstrates the substantial potential of multistimulus-responsive, porously architectured membrane-based piezoelectric nanogenerators in multifunctional, contactless, and efficient energy harvesting and sensing for wearable and portable electronics.

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Boosting piezoelectric and triboelectric effects of PVDF nanofiber through carbon-coated piezoelectric nanoparticles for highly sensitive wearable sensors

Cited by 60 publications

References 44 publications

Functionalized graphene oxide/polyvinylidene fluoride composite membrane acting as a triboelectric layer for hydropower energy harvesting

Functionalized graphene oxide/polyvinylidene fluoride composite membrane acting as a triboelectric layer for hydropower energy harvesting

Dual-Structure PVDF/SDS Nanofibrous Membranes for Highly Efficient Personal Protection in Mines

Highly Tunable Piezoelectricity of Flexible Nanogenerators Based on 3D Porously Architectured Membranes for Versatile Energy Harvesting and Self-Powered Multistimulus Sensing

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