Improved piezoelectricity of PVDF-HFP/carbon black composite films

Wu, Liangke; Yuan, Weifeng; Hu, Ning; Wang, Zhongchang; Chen, Chun Lin; Qiu, Jianhui; Ying, Jia; Li, Yuan

doi:10.1088/0022-3727/47/13/135302

Cited by 79 publications

(55 citation statements)

References 36 publications

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“…In 2014, Wu et al . made a composite film composed of PVDF‐HFP and carbon black (CB) wherein the output voltage of the prepared film with 0.5 wt% CB content was found to be 204% of the pristine PVDF‐HFP film.…”

Section: Piezoelectric Polymers: a Productive Alternative To Piezo‐cementioning

confidence: 99%

Advances in Piezoelectric Polymer Composites for Energy Harvesting Applications: A Systematic Review

Mishra

Unnikrishnan

Nayak

et al. 2018

Macro Materials & Eng

330

293

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Polymeric piezoelectric composites for energy harvesting applications are considered a significant research field which provides the convenience of mechanical flexibility, suitable voltage with sufficient power output, lower manufacturing cost, and rapid processing compared to ceramic‐based composites. This review focuses majorly on the basic theory and principles behind piezoelectric energy harvesting (PEH) devices, followed by specified materials used for the different devices. Different structural configurations associated with fabrication of PEH devices are discussed in detail along with their major advantages and drawbacks. Numerous classes of piezoelectric polymers such as polyvinylidene fluoride, polylactic acid, cellulose, polyamides, polyurea, polyurethanes, and their composites used for energy harvesting applications as a productive alternative of lead‐based piezo‐ceramics, are extensively addressed and explored. Additionally, current global and Indian scenarios associated with PEH devices, major challenges associated with them, and the future perspective of such devices are also reported in this review.

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Section: Piezoelectric Polymers: a Productive Alternative To Piezo‐cementioning

confidence: 99%

Advances in Piezoelectric Polymer Composites for Energy Harvesting Applications: A Systematic Review

Mishra

Unnikrishnan

Nayak

et al. 2018

Macro Materials & Eng

330

293

View full text Add to dashboard Cite

show abstract

“…The harvested electric power density of 464 and 561% respectively were reported for the neat PVDF-HFP films using ac and dc circuits [24]. The significance of carbon black filler particles in regulating the α-β phase transformation by acting as nucleating agents was well demonstrated.…”

Section: Introductionmentioning

confidence: 96%

Stretchable quaternary phasic PVDF-HFP nanocomposite films containing graphene-titania-SrTiO3 for mechanical energy harvesting

et al. 2018

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Integrating efficient energy harvesting materials in to soft, flexible, and eco-friendly substrates could yield significant breakthroughs in wearable and flexible electronics. Substantial advances are emerged in fabricating devices which can conform to irregular surfaces in addition to integrating piezoelectric polymer nanocomposites in to mechanical generators and bendable electronics. Here, we present a tri-phasic filler combination of one-dimensional titanium dioxide (TiO 2 ) nanotubes, twodimensional reduced graphene oxide, and three-dimensional strontium titanate (SrTiO 3 ), introduced in to a semi-crystalline polymer, poly(vinylidene fluoride-co-hexafluoropropylene). Simple mixing method was adopted for the composite fabrication after ensuring a high interaction between the various fillers. The prepared films were tested for their piezoelectric responses and mechanical stretchability. The results showed that the piezoelectric constant has increased due to the change in the filler concentration and reached a value of 7.52 pC/N at 1:2 filler combination. The output voltage obtained for the same filler composition was about 10.5 times that of the voltage generated by the neat polymer. Thus, we propose integration of these materials in fabricating energy conversion devices that can be useful in flexible and wearable electronics.

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“…Acrylonitrile-butadiene rubber (33% acrylonitrile) filled with carbon black exhibits electric conductivity which varies with the compression strain applied to the rubber [18]. Piezoelectric properties of polymers may be greatly enhanced by the addition of carbon black [19]. Carbon black is not only attractive in terms of cost, but compared to other conducting additives, such as metal powders, carbon black has a much greater tendency to form conductive networks due to its chain-like aggregate structure [20].…”

Section: Introductionmentioning

confidence: 99%