Synthesis and Application of Ferroelectric Poly(Vinylidene Fluoride-co-Trifluoroethylene) Films using Electrophoretic Deposition

Ryu, Jeongjae; No, Kwangsoo; Kim, Yeon‐Tae; Park, Eugene; Hong, Seungbum

doi:10.1038/srep36176

Cited by 30 publications

(18 citation statements)

References 37 publications

(48 reference statements)

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“…As shown in Figure 7a, small size PS/PDMS/P(VDF-TrFE) composite films had peaks at about 134 °C and weak peaks at about 56 °C, which were crystallization peaks and As shown in Figure 6, we characterized the FTIR transmission spectra of PS blend films with different particle sizes and mass fractions to analyze the crystal structure and organic functional groups of the composite films. According to results in the figure, the absorption peak at 1078 cm −1 owed to the C=C stretching of β phase [17,18], and the peak intensity became stronger with the increase of PS microspheres mass fraction. This is because the PS surface is negatively charged, and the existence of negative charge will interact with -CH 2 group in P(VDF-TrFE) to induce the formation of polar β phase, so the C=C stretching of β phase is enhanced [16].…”

Section: Resultsmentioning

confidence: 83%

Designing Micro Bulge Structure with Uniform PS Microspheres for Boosted Dielectric Hydrophobic Blend Films

et al. 2020

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In this paper, homogeneous polystyrene (PS) microspheres with controllable sizes of 40 nm, 80 nm, and 120 nm were synthesized by controlling the temperature of solvothermal method. In order to explore the effect of PS microspheres on dielectric-hydrophobic properties of the composite films, the composite films containing polystyrene, Polydimethylsiloxane, and P(VDF-TrFE) with high dielectric and hydrophobicity were successfully prepared by a simple and feasible solution blending method. The dielectric constant and hydrophobicity of composite films were boosted by increasing the mass fraction of PS content and decreasing the size of PS due to the enhanced interfacial polarization and the uniform surface micro bulge structure. Meanwhile, the composite films maintain a low loss tangent. Typically, the dielectric constant with 5 wt.% 40 nm PS reached to 29 at 100Hz, which is 4 times that of PDMS/P(VDF-TrFE) (mass ratio: 2/3). Otherwise, the largest the contact angle of 126° in the same composition was remarkably larger than the pure PDMS/P(VDF-TrFE) (110°). These improved properties have more potential applications in the electric wetting devices.

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Section: Resultsmentioning

confidence: 83%

Designing Micro Bulge Structure with Uniform PS Microspheres for Boosted Dielectric Hydrophobic Blend Films

et al. 2020

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“…The peaks at 878 and 1174 cm -1 are corresponding to the a-axis, those at 845 and 1285 cm -1 are associated with the b-axis, and those at 1075 and 1400 cm -1 correspond to the c-axis. [23] Specifically, the characteristic absorbance band at 845 cm -1 can be ascribed to the symmetric vibration of the CF 2 group (ν s CF 2 ) coupled with the symmetric stretching vibration of C-C (ν s CC), and that at 1284 cm -1 can be assigned to ν s CF 2 coupled with ν s CC and the bending vibration of C-C-C (δCCC). [23] The peaks at 845 and 1285 cm −1 can be associated with trans sequences longer than TTTT and TTT, confirming the presence of polar β-phase of P(VDF-TrFE).…”

Section: Characterization Of Lpscl@p(vdf-trfe) Csesmentioning

confidence: 99%

“…[23] Specifically, the characteristic absorbance band at 845 cm -1 can be ascribed to the symmetric vibration of the CF 2 group (ν s CF 2 ) coupled with the symmetric stretching vibration of C-C (ν s CC), and that at 1284 cm -1 can be assigned to ν s CF 2 coupled with ν s CC and the bending vibration of C-C-C (δCCC). [23] The peaks at 845 and 1285 cm −1 can be associated with trans sequences longer than TTTT and TTT, confirming the presence of polar β-phase of P(VDF-TrFE). [23] Compared with the P(VDF-TrFE), the peaks of the CSE are almost at the same positions, indicating that the β-phase does not change with the infiltration of LPSCl.…”

Section: Characterization Of Lpscl@p(vdf-trfe) Csesmentioning

confidence: 99%

Super Long‐Cycling All‐Solid‐State Battery with Thin Li₆PS₅Cl‐Based Electrolyte

Liu

Zhou

Han

et al. 2022

Advanced Energy Materials

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high interfacial impedance between SSEs and electrodes, and relatively high fabrication cost, which impede their applications. SSEs with high ionic conductivity, wide electrochemical window and low interfacial impedance are critical in developing ASSBs with high specific energy and power density. [2,3] Currently, among various SSEs, sulfide SSEs have a Li-ion conduction capability comparable to that of organic liquid electrolytes (≈10 -2 S cm -1 at room temperature). [4][5][6][7][8][9][10] Various sulfide materials with a high Li-ion conductivity of 10 -3 -10 -2 S cm -1 at room temperature, such as Li 10 GeP 2 S 12 (LGPS), [5] Li 10 SnP 2 S 12 , [6] and Li 9.54 Si 1.74 P 1.44 S 11.7 Cl 0.3 , [7] have been investigated. Among them, a family of sulfide SSEs, lithium argyrodites Li 6 PS 5 X (X = Cl, Br), [8] are attracting more attention due to high Li-ion conductivity (e.g., Li 5.3 PS 4.3 ClBr 0.7 : 2.4 × 10 -2 S cm -1 ; [9] Li 6 PS 5 Cl (denoted as LPSCl): 3.15 × 10 -3 S cm -1 [10] ) and relatively good electrochemical compatibility. The ASSB cells using argyrodites have demonstrated good cycling and rate performance. For example, recently, a sandwiched SSE separator of LPSCl-LGPS-LPSCl has been designed to prevent the growth of Li dendrites and thus enable superior cycling performance of ASSB cells; [11] and LPSCl SSE has also been matched with the silicon anode, capable of operating with high current densities and achieving a long cycle. [12] One drawback of pressed sulfide SSE separator layers is that micro-cracks easily appear and expands during Li plating/stripping in sulfide electrolytes due to the rigidness of sulfide powders, leading to short circuit in ASSB cells. [13] Thus a thicker sulfide SSE layer (e.g., ≈0.5-1.2 mm) via pressing sulfide powder was usually used in laboratory-type cells to guarantee the long-term cycling performance of the ASSBs, [13a,b,14] but this way reduces the cell-level energy density and is detrimental to scalable fabrication. Thus, it is desired to prepare sulfide SSE membranes with a small thickness and compact structure for advanced ASSBs.To obtain a thin, free-standing sulfide SSE membrane, a soft polymeric component is often used. Recently, much progress in sulfide-polymer composite solid electrolytes (CSEs) has been made. [15][16][17][18] Among them, Luo et al. prepared a 65 µm-thick bendable sulfide SSE using LPSCl and poly(ethylene oxide) (PEO), [16] and their ASSB cell of LiNi 0.7 Co 0.2 Mn 0.1 O 2 (LiNi x Co y Mn 1-x-y O 2 , denoted as NCM)||CSE||lithium-indium All-solid-state batteries (ASSBs) using sulfide electrolytes have attracted everincreasing interest due to high ionic conductivity of the sulfides. Nevertheless, a thin, strong solid-state sulfide electrolyte membrane maintaining high ionic conductivity is highly desired for ASSBs. Here, a thin, flexible composite solid electrolyte membrane composed of argyrodite sulfide Li 6 PS 5 Cl and a polar poly(vinylidene fluoride-co-trifluoroethylene) (P(VDF-TrFE)) framework is prepared via an electrospinning-infil...

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“…Nanostructures, nanocomposites, or piezoelectric polymers specifically designed with superior flexibility and elasticity are particularly preferred for biomedical applications. For example, poly(vinylidenefluoride-co-trifluoroethylene) [P(VDF-TrFE)]-based nanogenerators have demonstrated good piezoelectric coefficient, flexibility, and biocompatibility [20][21][22][23][24].…”

Section: Nanogenerator Materials For Biomedical Applicationsmentioning

confidence: 99%

Piezoelectric/Triboelectric Nanogenerators for Biomedical Applications

Li¹,

Ryu²,

Hong³

2020

Nanogenerators

Self Cite

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Bodily movements can be used to harvest electrical energy via nanogenerators and thereby enable self-powered healthcare devices. In this chapter, first we summarize the requirements of nanogenerators for the applications in biomedical fields. Then, the current applications of nanogenerators in the biomedical field are introduced, including self-powered sensors for monitoring body activities; pacemakers; cochlear implants; stimulators for cells, tissues, and the brain; and degradable electronics. Remaining challenges to be solved in this field and future development directions are then discussed, such as increasing output performance, further miniaturization, encapsulation, and improving stability. Finally, future outlooks for nanogenerators in healthcare electronics are reviewed.

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Synthesis and Application of Ferroelectric Poly(Vinylidene Fluoride-co-Trifluoroethylene) Films using Electrophoretic Deposition

Cited by 30 publications

References 37 publications

Designing Micro Bulge Structure with Uniform PS Microspheres for Boosted Dielectric Hydrophobic Blend Films

Designing Micro Bulge Structure with Uniform PS Microspheres for Boosted Dielectric Hydrophobic Blend Films

Super Long‐Cycling All‐Solid‐State Battery with Thin Li₆PS₅Cl‐Based Electrolyte

Piezoelectric/Triboelectric Nanogenerators for Biomedical Applications

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Synthesis and Application of Ferroelectric Poly(Vinylidene Fluoride-co-Trifluoroethylene) Films using Electrophoretic Deposition

Cited by 30 publications

References 37 publications

Designing Micro Bulge Structure with Uniform PS Microspheres for Boosted Dielectric Hydrophobic Blend Films

Designing Micro Bulge Structure with Uniform PS Microspheres for Boosted Dielectric Hydrophobic Blend Films

Super Long‐Cycling All‐Solid‐State Battery with Thin Li6PS5Cl‐Based Electrolyte

Piezoelectric/Triboelectric Nanogenerators for Biomedical Applications

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Super Long‐Cycling All‐Solid‐State Battery with Thin Li₆PS₅Cl‐Based Electrolyte