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, Vladimir V.; Киселев, Д. А.; Solnyshkin, A. V.; Silibin, Maxim V.

doi:10.1038/s41598-017-18838-1

Cited by 9 publications

(4 citation statements)

References 33 publications

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“…The PFM amplitude and phase images are shown in Figure 6a,b for the samples shown, respectively, in Figure 5c,d. As a matter of fact, despite the small d 33 values of 1 pm/V for the F-PVDF film, the domain polarization process was highly robust, as even the domain irregularities were kept at exactly the same places after 24 h. Again, our un-poled thin films showed piezoelectric coefficients values in good agreement with previous results reported in the literature for poled films at high temperature [32][33][34][35][36][37][38][39][40] without metallic nano-inclusions. In addition, in our case the PFM phase switching occurred at a lower electric field (50 MV/m) than the typical values reported in the literature (100-150 MV/m).…”

Section: Recoveries and Robustness Of Local Piezoelectric Propertiessupporting

confidence: 90%

“…In addition, although there have been a considerable number of works measuring their dielectric, piezoelectric, and magnetoelectric properties that undeniably support the idea of their optimization being directly linked to the dispersion of the magnetic nano-inclusions, currently, there is still an important lack of the characterization of the local electroactive and magnetostrictive properties. Several studies have shown the local piezoelectric properties of PVDF-TrFE copolymer neat films [33] as well as hybrid films based on the artificial mixing of the PVDF and copolymer phase with non-magnetic nano-phases (e.g., CNTs, ZnO, (Pb,Ba)(Zr,Ti)O 3 , graphene) [34][35][36][37][38][39]. Only very recent studies [40,41] have shown the possibility of using the magnetic phase organization inside the polymer matrix to improve the local PFM properties under the application of a magnetic field.…”

Section: Introductionmentioning

confidence: 99%

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Robust Piezoelectric Coefficient Recovery by Nano-Inclusions Dispersion in Un-Poled PVDF–Ni0.5Zn0.5Fe2O4 Ultra-Thin Films

et al. 2022

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This work aimed to study the influence of the hybrid interface in polyvinylidene fluoride (PVDF)-based composite thin films on the local piezoelectric response. Our results provide evidence of a surprising contradiction: the optimization process of the β-phase content using nano-inclusions did not correspond to the expected nanoscale piezoelectric optimization. A large piezoelectric loss was observed at the nanoscale level, which contrasts with the macroscopic polarization measurement observations. Our main goal was to show that the dispersion of metallic ferromagnetic nano-inclusions inside the PVDF films allows for the partial recovery of the local piezoelectric properties. From a dielectric point of view, it is not trivial to expect that keeping the same amount of the metallic volume inside the dielectric PVDF matrix would bring a better piezoelectric response by simply dispersing this phase. On the local resonance measured by PFM, this should be the worst due to the homogeneous distribution of the nano-inclusions. Both neat PVDF films and hybrid ones (0.5% in wt of nanoparticles included into the polymer matrix) showed, as-deposited (un-poled), a similar β-phase content. Although the piezoelectric coefficient in the case of the hybrid films was one order of magnitude lower than that for the neat PVDF films, the robustness of the polarized areas was reported 24 h after the polarization process and after several images scanning. We thus succeeded in demonstrating that un-poled polymer thin films can show the same piezoelectric coefficient as the poled one (i.e., 10 pm/V). In addition, low electric field switching (50 MV/m) was used here compared to the typical values reported in the literature (100–150 MV/m).

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Section: Recoveries and Robustness Of Local Piezoelectric Propertiessupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Robust Piezoelectric Coefficient Recovery by Nano-Inclusions Dispersion in Un-Poled PVDF–Ni0.5Zn0.5Fe2O4 Ultra-Thin Films

et al. 2022

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“…solar cells [37][38][39] or fuel cell [40][41][42] and lithium ion battery materials. 30,32,43,44 Detailed analysis of interfaces in polymer-particle composites, however, are mainly limited to analysis of charge distribution at carbon-based particles like carbon nanotubes, 45 fullerenes 46 or piezoelectric materials 47 embedded in isolating polymers. Polymerparticle hybrid electrolytes for lithium ion batteries have not been addressed so far to the best of the author's knowledge.…”

Section: State Of the Art And Theoretical Considerationsmentioning

confidence: 99%

Characterization of the Particle-Polymer Interface in Dual-Phase Electrolytes by Kelvin Probe Force Microscopy

Buchheit

Hoffmeyer

Teßmer

et al. 2021

J. Electrochem. Soc.

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In this study, the possibility to characterize the electrochemical characteristics of the particle-polymer interface in dual-phase electrolytes by measuring the contact potential difference with high local resolution is demonstrated. Two different polymer electrolytes, polyethylene oxide (PEO) and poly[bis-2-(2-methoxyethoxy)-ethoxyphosphazene] (MEEP), were investigated in combination with lithium ion conductive Li7La3Zr2O12 (LLZ) particles and two different mixed ionic-electronic conductive ceramic particles: uncoated and carbon coated LiFePO4 (LFP) as typical cathode material and uncoated Li4Ti5O12 as typical anode material. A distinct Volta potential gradient between the particles and the polymer was observable in all cases, except when no lithium salt was present within the polymer matrix. The measured potential gradients can be explained in terms of a contact potential between the polymer electrolyte and the ceramic electrolyte. A more negatively charged space charge layer around LFP particles in PEO matrix and around LLZ particles in MEEP can be explained by enrichment of salt anions in direct vicinity of the particle. Electrochemical characterization with impedance spectroscopy showed an increased conductivity for addition of LFP for PEO while the addition of various particles in different concentrations showed no effect on the conductivity of MEEP. The lithium transference number was unaffected by particle addition for all samples.

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“…In general, composites based on PVDF or its copolymer with trifluoroethylene P(VDF–TrFE) with embedded electrically active inorganic fillers show exceptional promise for applications in various devices such as capacitors, actuators, sensors, and contact switches. − The films of the P(VDF–TrFE) polymer itself offer relatively good mechanical compliance, ferroelectric, pyroelectric, and piezoelectric properties compared with other polymers . P(VDF–TrFE) copolymer with the molar ratio of 70/30 is one of the most studied compositions.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Dielectric Characterization of P(VDF–TrFE) Copolymer-Based Composites Containing Metal–Formate Frameworks

et al. 2019

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We report the synthesis and dielectric characterization of novel polyvinylidene fluoride−trifluoroethylene P(VDF−TrFE) composite films containing [(CH 3) 2 NH 2 ][Mg(HCOO) 3 ] (DMAMg) and [NH 4 ][Zn(HCOO) 3 ] (AmZn) dense metal−organic frameworks (MOFs). The optical camera and Raman microscopies are used to map the distribution of the MOF fillers in the prepared films. The dielectric spectroscopy experiments of the DMAMg/P(VDF−TrFE) composite performed in a broad temperature range demonstrate rich dielectric behavior originating from the dipolar dynamics of the (CH 3) 2 NH 2 + molecular cations and glassy behavior of the copolymer matrix. An anomalous behavior of the complex dielectric permittivity is also observed because of the structural phase transition of DMAMg fillers. The dielectric properties of the AmZn/P(VDF−TrFE) composite film are mainly determined by the dipolar glass relaxation of the P(VDF−TrFE) polymer. The frequency-dependent dielectric spectra of both composites allow us to characterize the observed dipolar relaxation processes. The (CH 3) 2 NH 2 + cation dynamics follows the Arrhenius law, whereas the glassy behavior of P(VDF−TrFE) is described by the Vogel−Fulcher equation. For both composites, we observe a significant increase of the dielectric permittivity compared with the P(VDF−TrFE) film without MOF fillers.

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

Cited by 9 publications

References 33 publications

Robust Piezoelectric Coefficient Recovery by Nano-Inclusions Dispersion in Un-Poled PVDF–Ni0.5Zn0.5Fe2O4 Ultra-Thin Films

Robust Piezoelectric Coefficient Recovery by Nano-Inclusions Dispersion in Un-Poled PVDF–Ni0.5Zn0.5Fe2O4 Ultra-Thin Films

Characterization of the Particle-Polymer Interface in Dual-Phase Electrolytes by Kelvin Probe Force Microscopy

Preparation and Dielectric Characterization of P(VDF–TrFE) Copolymer-Based Composites Containing Metal–Formate Frameworks

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