(Na,K)NbO3 nanoparticle-embedded piezoelectric nanofiber composites for flexible nanogenerators

Kang, Han Byul; Han, Chan Su; Pyun, Jae Chul; Ryu, Wooseok; Kang, Chong Yun; Cho, Yong Soo

doi:10.1016/j.compscitech.2015.02.015

Cited by 115 publications

(42 citation statements)

References 37 publications

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“…There have been only a few reports on SPM based studies of ferroelectric polymer/ceramic composites 19–22 . Using piezoresponse force microscopy (PFM), local polarization reversal was studied in BaTiO 3 /PVDF composite nanofibers 20 and (Na,K)NbO 3 nanoparticle-embedded P(VDF-TrFE) nanofiber composites 21 . Silibin et al .…”

Section: Introductionmentioning

confidence: 99%

Evolution of poled state in P(VDF-TrFE)/(Pb,Ba)(Zr,Ti)O3 composites probed by temperature dependent Piezoresponse and Kelvin Probe Force Microscopy

Shvartsman

Киселев

Solnyshkin

et al. 2018

Sci Rep

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Polarized states of polymer/inorganic inclusion P(VDF-TrFE)-(Pb,Ba)(Zr,Ti)O3 composites are studied at the nanoscale using both piezoresponse force microscopy (PFM) and Kelvin probe force microscopy (KPFM). It has been shown that inorganic inclusions can be visualized using KPFM due to a discontinuity of the surface potential and polarization at the interface between the inclusions and the polymer matrix. The temperature evolution of the PFM and KPFM signal profiles is investigated. Softening of the polymer matrix on approaching the Curie temperature limits application of the contact PFM method. However non-contact KPFM can be used to probe evolution of the polarization at the phase transition. Mechanisms of the KPFM contrast formation are discussed.

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Section: Introductionmentioning

confidence: 99%

Evolution of poled state in P(VDF-TrFE)/(Pb,Ba)(Zr,Ti)O3 composites probed by temperature dependent Piezoresponse and Kelvin Probe Force Microscopy

Shvartsman

Киселев

Solnyshkin

et al. 2018

Sci Rep

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“…This kind of particles has been widely used subsequently, especially for applications of sensors and actuators due to a high Curie temperature and a high piezoelectric coefficient [2][3][4][5][6]. However, the recent legislation about lead toxicity [7] has highly stimulated the use of lead-free ceramic such as barium titanate (BaTiO 3 ) [8][9][10][11][12], potassium niobate (KNbO 3 ) [13][14][15], lithium niobate (LiNbO 3 ) [16,17], and sodium niobate (NaNbO 3 ) [13,[18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Piezoelectric and mechanical behavior of NaNbO3/PEKK lead-free nanocomposites

Bessaguet

Dantras

Lacabanne

et al. 2017

Journal of Non-Crystalline Solids

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a b s t r a c tLead-free piezoelectric nanocomposites based on poly(ether ketone ketone) (PEKK) and sodium niobate (NaNbO 3 ) particles were elaborated. The presence of submicronic particles does not influence the thermal stability of the matrix so that no degradation phenomenon is observed before 500°C. The conservative mechanical modulus G′ increases linearly with the NaNbO 3 fraction; this variation is well fitted by the Kerner model until 20 vol%. Such nanocomposites remain ductile. The polarizing field required for obtaining piezoelectric nanocomposites is 12 kV·mm −1 i.e. analogous with the one used for poling bulk ceramic. The value of the piezoelectric coefficient (d 33 = 0.2 pC·N −-1 for 20 vol% NaNbO 3 ) is consistent with the Furukawa's model. This value is explained by the low PEKK permittivity. This low d 33 is counterbalanced by the piezoelectric voltage constant (g 33 = 103·10 −3 Vm·N −1 ) which is higher than the one of classical piezoelectric ceramic like PZT or BaTiO .

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“…Various inorganic and organic piezoelectric materials have been explored in the past to prepare piezoelectric energy harvester. For instance, inorganic materials like zinc oxide (ZnO), BaTiO 3, Lead Zirconate Titanate (PZT), ZnSnO 3, potassium sodium niobate (KNN), and organic piezoelectric materials like PVDF and its co‐polymers (PVDF‐TrFE) have been explored extensively. In addition, in the recent year two or more fillers have also been modified together to improve the piezoelectric response of the nanogenerator.…”

Section: Introductionmentioning

confidence: 99%

“…Similarly, piezoelectric nanogenerator has been developed by using lead‐free KNN piezoelectric materials in the different forms such as particles, nanorods, and nanowires. Kang et al have prepared KNN nanoparticles embedded P(VDF‐TrFE) electrospun nanocomposite‐based piezoelectric energy harvester and they have noticed that this nanogenerator can generate 0.98 V output signal with the 10% loading of the KNN nanoparticles. In our previous study, we have developed KNN nanostructures (mixture of particles and rods) and nanorods incorporated PVDF polymer‐based nanogenerator by different methods like solution cast films, melt‐spun filaments, and electrospun webs.…”

Section: Introductionmentioning

confidence: 99%

A hybrid piezoelectric nanogenerator comprising of KNN/ZnO nanorods incorporated PVDF electrospun nanocomposite webs

Bairagi

Ali

2020

Int J Energy Res

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A unique potassium sodium niobate (KNN)/zinc oxide (ZnO) incorporated Poly(vinylidene fluoride) (PVDF) polymer-based hybrid piezoelectric nanogenerator has been developed by using electrospinning process.Electrospinning method has been used due to its remarkable role in improving the piezoelectric performance of the nanocomposite based nanogenerator by providing mechanical stretching and in situ poling of both the polymer as well as filler at the same time. The PVDF/KNN/ZnO electrospun nanocompositebased piezoelectric nanogenerator exhibits the maximum output voltage as compared to PVDF/KNN and PVDF/ZnO based nanogenerator. The output voltage and current for the PVDF/KNN/ZnO based nanogenerator are 25 V and 1.81 μA (when pressure is applied by the finger tapping mode) and 8.31 V and 5 μA (when pressure is applied by standard sewing machine). The synergistic effect of KNN and ZnO nanorods into PVDF polymer matrix significantly improves the resultant piezoelectric performance of the PVDF/KNN/ZnO based nanogenerator by which it has been possible to glow an LED, power density of 11.31 μW/cm 2 (finger tapping) and 10.38 μW/cm 2 (pressure applied by sewing machine). Finally, the practical applicability of the produced nanogenerator has been checked by attaching it on elbow and wrist of a human hand, which shows 90 mV (for elbow), 400 mV (front side of wrist), and 225 mV (back side of wrist) output voltage by bending and moving of the same. K E Y W O R D Sbeta nucleation, in situ poling, nanofibrous web, nanorods, piezoelectric, PVDF/KNN/ZnO hybrid structure

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(Na,K)NbO3 nanoparticle-embedded piezoelectric nanofiber composites for flexible nanogenerators

Cited by 115 publications

References 37 publications

Evolution of poled state in P(VDF-TrFE)/(Pb,Ba)(Zr,Ti)O3 composites probed by temperature dependent Piezoresponse and Kelvin Probe Force Microscopy

Evolution of poled state in P(VDF-TrFE)/(Pb,Ba)(Zr,Ti)O3 composites probed by temperature dependent Piezoresponse and Kelvin Probe Force Microscopy

Piezoelectric and mechanical behavior of NaNbO3/PEKK lead-free nanocomposites

A hybrid piezoelectric nanogenerator comprising of KNN/ZnO nanorods incorporated PVDF electrospun nanocomposite webs

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