O3 Nanofibers Research Articles

Dual-Photosensitizer Synergy Empowers Ambient Light Photoactivation of Indium Oxide for High-Performance NO2 Sensing.

Light-activated chemiresistors offer a powerful approach to achieving lower-temperature gas sensing with unprecedented sensitivities. However, an incomplete understanding of how photoexcited charge carriers enhance sensitivity obstructs the rational design of high-performance sensors, impeding the practical utilization under commonly accessible light sources instead of ultravioletor higher-energy sources. Here, a rational approach is presented to modulate the electronic properties of the parent metal oxide phase, exemplified by this model system of Bi-doped In2O3 nanofibers decorated with Au nanoparticles (NPs) that exhibit superior NO2 sensing performance. Bi doping introduces mid-gap energy levels into In2O3, promoting photoactivation even under visible blue light. Additionally, green-absorbing plasmonic Au NPs facilitate electron transfer across the heterojunction, extending the photoactive region toward the green light. It is revealed that the direct involvement of photogenerated charge carriers in gas adsorption and desorption processes is pivotal for enhancing gas sensing performance. Owing to the synergistic interplay between the Bi dopants and the Au NPs, the Au-BixIn2-xO3 (x=0.04) sensing layers attain impressive response values (Rg/Ra=104 at 0.6ppm NO2) under green light illumination and demonstrate practical viability through evaluation under simulated mixed-light conditions, all of which significantly outperforms previously reported visible light-activated NO2 sensors.

Enhanced Solar Fuel Production over In2 O3 @Co2 VO4 Hierarchical Nanofibers with S-Scheme Charge Separation Mechanism.

The conversion of CO2 into valuable solar fuels via photocatalysis is a promising strategy for addressing energy shortages and environmental crises. Here, novel In2 O3 @Co2 VO4 hierarchical heterostructures are fabricated by in situ growing Co2 VO4 nanorods onto In2 O3 nanofibers. First-principle calculations and X-ray photoelectron spectroscopy (XPS) measurements reveal the electron transfer between In2 O3 and Co2 VO4 driven by the difference in work functions, thus creating an interfacial electric field and bending the bands at the interfaces. In this case, the photogenerated electrons in In2 O3 transport to Co2 VO4 and recombine with its holes, indicating the formation of In2 O3 @Co2 VO4 S-scheme heterojunctions and resulting in effective separation of charge carriers, as confirmed by in situ irradiation XPS. The unique S-scheme mechanism, along with the enhanced optical absorption and the lower Gibbs free energy change for the production of * CHO, significantly contributes to the efficient CO2 photoreduction into CO and CH4 in the absence of any molecule cocatalyst or scavenger. Density functional theory simulation and in situ diffuse reflectance infrared Fourier transform spectroscopy are employed to elucidate the reaction mechanism in detail.

Plasma Modification of Interfaces in Ceramic Nanofiber–Polymer Electrolytes for Lithium Metal Batteries

Ceramic–polymer composite electrolytes hold a great promise as next-generation electrolytes because of strong mechanical properties and wide electrochemical stability window. However, it remains challenges in improving ionic conductivity and lithium ion transference numbers. In this work, plasma treatment has been performed on Li0.33La0.557Ti0.995Al0.005O3 (LLATO) nanofibers. The treated nanofibers are then incorporated with a polymer matrix to form a composite electrolyte. Plasma treatment has modulated oxygen vacancies, functional groups, polarity, and interfacial interaction of LLATO-polymer. This has improved lithium ion transport at interface of LLATO-polymer electrolyte. As a result, the LLATO-polymer electrolyte shows enhanced ionic conductivity and mechanical performance. This work has implication in design of ceramic-polymer composite electrolytes for solid state lithium metal batteries.

Janus Dual Self-Strengthening Structure of Bi2 O3 /Gd2 O3 Nanofibrous Membranes for Superior X-Ray Shielding.

Bi2 O3 /rare earth oxide biphasic absorbers are attractive for high-efficiency X-ray shielding due to the complementary X-ray absorption effects. However, its application is severely hindered by poor interphasic contact. Here, a new Janus interface engineering strategy is reported for the construction of continuous and flexible Bi2 O3 /Gd2 O3 crystal nanofibrous membranes (FJNMs) with micro/nano dual self-strengthening interphasic adhesion. This strategy facilitates online micro-interlocking between Bi2 O3 /Gd2 O3 nanofibers and in situ nano-grain fusion between Bi2 O3 /Gd2 O3 crystals, significantly enhancing the adhesive strength at the Bi2 O3 /Gd2 O3 interface. Additionally, the synergistic shielding effect from Bi2 O3 /Gd2 O3 absorption and multiple reflections in Bi2 O3 and Gd2 O3 crystal lattices make the nanofibrous membranes a superior X-ray radiation barrier. The FJNMs demonstrate integrated features of exceptional X-ray shielding efficiency (91%-100%), robust interfacial adhesion (lap-shear strength >3.8MPa), prominent flexibility, lightweight, and outstanding breathability. The design concepts of fibrosing biphasic absorber assemblies pave the way for asymmetrically assembling biphasic materials, setting the stage for a fundamental shift in next-generation radiation shielding materials.

Improvement in Cycle Characteristics using PVP Based Direct Carbon Coating During High-Rate Charge and Discharge of Li[Ni0.93Co0.07]O2 Nanofibers: Application for Lithium Secondary Batteries

<p>In this study, carbon-coated porous nanofibers were prepared via electrospinning and the performance of Li[Ni<sub>0.93</sub>Co<sub>0.07</sub>]O<sub>2</sub> (NC) synthesized by electrospinning (E-NC) and co-precipitation (C-NC) was compared. E-NC had a discharge capacity of 206 mAh g<sup>−1</sup> at 0.1C (17 mA/g), which is 10% higher than that of C-NC (189.2 mAh g<sup>−1</sup>). E-NC shows a high-rate performance of 118.32 mAh g<sup>−1</sup> (61.7%) at 5C (850 mA/g), which is 50% higher than that of C-NC (78.22 mAh g<sup>−1</sup> = 45.7%). Charge transfer of the carbon-coated porous nanofiber E-NC decreased by 35% compared to C-NC after 20 cycles as observed using electrochemical impedance spectroscopy. The results of this study show that the nanofiber structure with carbon coating shortens the Li-ion diffusion path, improves electrical conductivity, resulting in excellent rate performance.</p>

High-entropy perovskite oxide nanofibers as efficient bidirectional electrocatalyst of liquid-solid conversion processes in lithium-sulfur batteries

Transition metal oxides are a class of promising host materials of sulfur for lithium-sulfur (Li-S) batteries due to their robust polysulfide adsorption, and catalytic effect on sulfur redox reaction. It is proven that the adsorption-catalysis property can benefit a lot from incorporating multiple metal elements, and high-entropy oxides (HEOs) show good competitive potential for durable Li-S batteries. Herein, HEO nanofibers are designed as bidirectional catalytic host of sulfur to promote both the reduction of soluble intermediates and the re-oxidation of insoluble products. Specifically, the high-entropy perovskite oxide La0.8Sr0.2(Cr0.2Mn0.2Fe0.2Co0.2Ni0.2)O3 (HE-LSMO) nanofibers prepared via an electrospinning-calcination method show a unique porous fibrous structure for incorporation with sulfur. The introduced multiple metal elements can effectively modulate the binding strength of soluble polysulfides, and HE-LSMO nanofibers act as bidirectional electrocatalyst for the liquid-solid conversion processes between soluble polysulfides and insoluble Li2S, which is enabled by the high entropic contribution. As a result, the S/HE-LSMO cathode with a sulfur loading of 8.4 mg cm−2 shows a high areal capacity of 6.6 mAh cm−2 at low electrolyte/sulfur ratio of 5.3 μL mg−1, as well as good cycle stability. This work provides a foundation understanding of the bidirectional catalytic role of HEOs toward practical Li-S batteries.

High throughput fabrication of zirconium titanate nanofibers by using alternating field electrospinning

Nanofibrous zirconium titanate (Zr0.5Ti0.5O2) was derived from precursor fibers spun with a high-yield, free-surface alternating force electrospinning (AFES). A process productivity of 8.7 g/h was achived in terms of the mass of crystallized Zr0.5Ti0.5O2 nanofibers. The average fiber diameters varied from 185 to 380 nm, depending on the annealing temperature and precursor composition. The onset crystallization temperature of the nanofibers was observed at ∼ 640 °C irrespective to the alkoxide/polymer ratio in precursor fibers, heating rate, and fiber diameter. Nanofibrous Zr0.5Ti0.5O2 maintained its nanocrystallinity, phase stability, and fiber integrity between 600 and 1200 °C. The results demonstrate strong potential of AFES for scalable production of nanofibrous zirconium titanate for demanding applications.

Ag/Ce0.5Zr0.5O2 nanofibers: Visible light photocatalysts for degradation of p-nitrophenol

Ag deposited Ce0.5Zr0.5O2 nanofibers (CeZr-NF) were successfully synthesized by impregnation of Ag (0.5, 1.0, 1.5 and 2.0 wt.%) over CeZr-NF and thermal treatment at 500°C. The prepared Ag/CeZr-NF nanocomposites were analyzed by elemental analysis, XRD, Raman, FE-SEM, DR UV-vis, XPS and N2-adsorption measurements. The obtained results indicated that highly distributed Ag species were formed on the surface of CeZr-NF semiconductor because of strong interaction. The obtained Ag/CeZr-NF nanocomposites displayed excellent photocatalytic activity for degradation of p-nitrophenol (p-NP) activities under visible irradiation, compared to Ag metal, Ag oxides and CeZr-NF individually. The optimization of reaction parameters was performed by studying the influence of pH of solution, reaction time and catalyst amount on the p-NP degradation efficiency. The highest degradation efficiency of 96% was observed with acidic p-NP solution and catalyst mass of 0.2 g in 90 min for 1.5 wt.% Ag loaded CeZr-NF sample. Significant enhancement in degradation efficiency of the CeZr nanofibers after Ag deposition is because of the combination effects of low band gap energy, large pore size, high photocurrent density and slow e−-h+ recombination. After five recycles, the photocatalytic activity of Ag/CeZr-NF nanocomposites did not decline indicating the robust nature of synthesized composites.

Significantly improved energy storage performance of flexible PVDF-based nanocomposite by loading surface-hydroxylated BaZr0.2Ti0.8O3 nanofibers

Dielectric capacitors composed of high-breakdown strength (Eb) polymer and large-dielectric constant (εr) inorganic nanofillers are pivotal components that are extensively used in power electronics. Herein, novel nanocomposites with poly(vinylidene fluoride) (PVDF) as matrix and BaZr0.2Ti0.8O3 (BZT) nanofibers as fillers was fabricated. To strengthen the dispersion of the BZT nanofibers and improve the compatibility between the fibers and the matrix, the nanofibers were coated with polydopamine. The values of Young's modulus and DC resistivity of BZT/PVDF nanocomposites firstly increase and then reduce as the increase of volume percentage content of BZT nanofibers, from which the maximum values of Young's modulus and DC resistivity were obtained at 5 vol% of BZT nanofibers content. Phase-field simulation is used to show the electric field distribution for different volume fraction of BZT/PVDF nanocomposites. Both experimental and theoretical results corroborate that the rational addition of BZT nanofibers into the PVDF matrix can lead to an improvement of Eb of the nanocomposites. Strikingly, the optimal discharged energy density (Ud) of the BZT/PVDF composite is 13.0 J/cm3 with 5 vol% BZT filler at 5219 kV/cm, quite larger than that of PVDF (Ud ~ 6.6 J/cm3 and Eb ~ 4447 kV/cm). Meanwhile, the sample exhibits an ultra-fast discharge time (t0.9) of 0.14 μs under load resistor of 2000 Ω. It provides a feasible avenue to obtain good Ud of the nanocomposites under low filler loading, which will yield good application prospect to next generation of electrical mini capacitors.

Ag/Ce0.5zr0.5o2 Nanofibers: Visible Light Photocatalysts for Degradation of P-Nitrophenol

Ag/Ce0.5zr0.5o2 Nanofibers: Visible Light Photocatalysts for Degradation of P-Nitrophenol

Self-powered flexible piezoelectric sensor based on PbZr0.52Ti0.48O3 nanofibers for impact force monitoring and rubber mat aging assessment

In this work, a flexible piezoelectric sensor was fabricated based on PbZr0.52Ti0.48O3(PZT) nanofibers (NFs) composite, and its potential applications in impact force monitoring and rubber mat aging assessment were reported. The lead zirconate titanate (PZT) piezoelectric NFs with diameters of 150–260 nm were prepared via electrospinning technique, showing a high piezoelectric coefficient (d 33 ∼ 92.5 pm V−1) for piezoelectric fibers. The PZT NFs and carbon nanotubes (CNTs) were dispersed in polydimethylsiloxane (PDMS) to fabricate a highly stretchable and flexible impact sensor (PZT/CNTs/PDMS piezoelectric nanocomposite sensor), which showed excellent low frequency sensitivity (as low as 0.01 Hz), high bending deformation sensitivity (as low as 0.192 cm−1 curvature deformation with 6.64 V cm−1 sensitivity) and cycle stability under external impact force. Besides, it is the first attempt to assess railway tracks rubber mat aging based on piezoelectric nanocomposite impact sensor, and the static stiffness relative error reaches a low value of 6.91%.

A novel perovskite ferroelectric KNbO3-Bi(Ni1/2Ti1/2)O3 nanofibers for photocatalytic hydrogen production

Novel perovskite ferroelectric (1-x)KNbO3-xBi(Ni1/2Ti1/2)O3 nanofibers were synthesized by electrospinning for the first time. The synthesized 0.99KNbO3-0.01Bi(Ni1/2Ti1/2)O3 nanofibers displayed the optimal photocatalytic activity with a hydrogen production rate of 0.57 μmol·h−1 for 20 mg under visible light radiation. By first principles calculations, a midgap of Ni 3d was formed between the O 2p states at the valence band maximum and the Nb 4d states at the conduction band minimum due to the addition of Bi(Ni1/2Ti1/2)O3, which may be the principal reason for the visible light response in this work. In addition, the hydrogen production rate of polarized 0.99KNbO3-0.01Bi(Ni1/2Ti1/2)O3 nanofibers was twice as high as that of unpolarization under visible light irradiation, indicating that the internal dipole field can accelerate the separation of photogenerated electron-hole pairs. This may provide a new viewpoint for improving the visible light response of perovskite-oxide ferroelectrics.

Highly sensitive humidity sensor based on the solid solution Zr0.2Ti0.8O2 nanofibers

The ZrxTi1−xO2 (x = 0.0–0.5) nanofibers were synthesized by an electrospinning process. The influences of zirconium incorporation on the structure, phase composition, lattice parameters, morphology, specific surface area, and surface states were investigated in terms of XRD, SEM, BET, and XPS tests. The humidity sensing performances were also carried out in detail. It can be concluded that the replacement of Zr at Ti-site had significant impacts with regard to the phase structure: the anatase-rutile phase transformation was inhibited by Zr4+ ion doping; Zr4+ ion was successfully incorporated into the TiO2 lattice through a substitutional mode resulting in the formation of solid solution ZrxTi1−xO2 (x = 0.1–0.2) with anatase structure; when the Zr4+ ion was saturated, excessive Zr4+ ion formed new phase of Ti2ZrO6 and ZrTiO4 (nominal x ≥ 0.3); the lattice parameters and the cell volume increased as Zr4+ ion incorporation. The solid solution Zr0.2Ti0.8O2 nanofibers had the highest Ti3+ abundance among the samples with x ≤ 0.2, accompanied by the highest oxygen vacancies. Moreover, the solid solution Zr0.2Ti0.8O2 nanofibers exhibited the best humidity sensing properties: excellent sensitivity as proven by four orders of magnitude change to impedance at 11–95% relative humidity (RH), negligible hysteresis, rapid response and recovery speed as well as superior stability, which were induced by high concentration of oxygen vacancies combined with reactive Ti3+ ions. A detailed study of the sensing mechanism was also performed in terms of complex impedance spectra.

Enhanced energy density in sandwich-structured P(VDF-HFP) nanocomposites containing Hf0.5Zr0.5O2 nanofibers

Ceramic/polymer composites with high energy density attract great interest due to their application in micro-electric power systems. However, the large permittivity mismatch between ceramic fillers and polymer matrix will largely decrease the breakdown strength and energy density of nanocomposites. Herein, one-dimensional Hf0.5Zr0.5O2 nanofibers (HZO-NFs) with very low permittivity were proposed as the loading fillers in poly (vinylidene fluoride - hexafluoro propylene) (P(VDF-HFP)) copolymer for energy-storage applications for the first time via a simple scalable method of electrospinning technique. P(VDF-HFP) nanocomposites with 3 wt% HZO-NFs (3 wt% HZO/P) showed a high discharged energy density (Ud) of 13.68 J/cm3 with a high breakdown strength (Eb) of 508.66 kV/mm. Sandwich-structured P-3 wt% HZO/P-P nanocomposite achieved an excellent Ud of 21.63 J/cm3 and a high η of ∼ 65.68% at ultrahigh Eb of 706.71 kV/mm, which are much higher than those of the commercial BOPP, i.e. 2 J/cm3 at 640 kV/mm. Moreover, the COMSOL simulations revealed that the introduction of 1D nanofibers and charge traps could effectively improve the local distribution of electric field, and finally increased the breakdown strength. The major contribution to the improved Ud originates from the large breakdown strength (4 ∼ 8 MV/cm), because of the large band width of HZO and the existence of multi-interfaces. This work can provide a new perspective for promoting the performance of polymer nanocomposites.

High-performance lead free piezoelectric Y2O3-Ba(Ti0.96Sn0.04)O3 nanofibers based flexible nanogenerator as energy harvester and self-powered vibration sensor

Efficient, eco-friendly, flexible and high energy output piezoelectric nanogenerator is very much desirable for the development of multifunctional miniaturize devices and sensors. Aspect ratio ~ 102 and boosted energy harvesting attributes of lead-free piezoelectric Y2O3-Ba(Ti0.96Sn0.04)O3 nanofibers have considered for fabricating a flexible nanogenerator. The nanofibers have been synthesized using sol–gel and followed by electro-spinning process. The sintering temperature optimizes at 700 °C to obtain the best quality nanofibers having a diameter in the range from 67 to 132 nm. Rietveld refinement analysis of the X-ray diffraction pattern revealed the substitution of yttrium 30% on titanium (B-site) and 10% on barium (A-site) sites of ABO3 structure. Efforts have made for the development of Y2O3-Ba(Ti0.96Sn0.04)O3 nanofibers based nanogenerator using a simple, cost-effective and scalable approach. The open-circuit voltage (peak-peak) ~ 25 V and the maximum power density ~ 6.5 mW/cm3 have obtained from the developed nanogenerator. Further, the performance of the Y2O3-Ba(Ti0.96Sn0.04)O3 nanofibers based nanogenerator is investigated as a frequency sensor by measuring output voltage as a function of frequency.

Free-Standing, Foldable V2 O3 /Multichannel Carbon Nanofibers Electrode for Flexible Li-Ion Batteries with Ultralong Lifespan.

Free-standing electrodes with high energy density and long life are of critical importance to the development of lithium-ion batteries (LIBs) for flexible/wearable electronic devices. Herein, the free-standing and foldable V2 O3 /multichannel carbon nanofibers (V2 O3 /MCCNFs) composites are prepared via electrospinning and subsequent carbonization. Such V2 O3 /MCCNFs electrode delivers a superior capacity of 881.1 mAh g-1 at 0.1 A g-1 after 240 cycles. More importantly, the ultralong lifespan is achieved with a high capacity of 487.8 mAh g-1 even after 5000 cycles at a high current density of 5 A g-1 with only 0.00323% decay rate, which shows the best performance among the reported V2 O3 -based anodes and other metal oxides based free-standing anodes. Furthermore, this flexible electrode is further applied to the pouch cell, which exhibits prominent capacity of 348.3 mAh g-1 after 500 cycles at 1 A g-1 with 0.094% decay per cycle. The unprecedented performance can be ascribed to synergetic contributions of V2 O3 and multichannel carbon nanofibers, which not only promote the penetration of electrolyte and reduce the transport length of Li+ , but also increase active material/electrolyte contact area and buffer the volume change. This work paves the way to develop free-standing electrode for flexible/wearable electronic devices with ultralong lifespan.

The Application of a Y-Modified Lanthanum Zirconate Flexible Thin Film for a High-Performance Flexible Supercapacitor.

With the rapid development of wearable electronics devices, there is increasing demand for the development of new flexible energy storage devices with high security, and this has become a hot research topic. Although flexible supercapacitors are considered to be high-performance energy-storage equipment because of their fast charging/discharging ability, long cycle life, good reliability, wide operating temperature range, and so on, there are still many drawbacks that need to be overcome. Herein, the La2 Zr2 O7 (LZO) thin film is synthesized as a new energy-storage material by using a facile electrospinning method and calcination at low temperature. In addition, the mechanism of producing the flexibility of this film is determined by TG, IR, and XRD analyses. As previous studies have suggested that the charge storage of the LZO film can be attributed to the mechanism of oxygen intercalation, the Y element is doped into the LZO film to increase the concentration of oxygen vacancies. The changes in structural and electrochemical properties of La2 Yx Zr2-x O3 (0≤x≤0.5) nanofibers (LNF-x) with increasing Y content are studied carefully to obtain the best doping sample. The LNF-0.1 sample shows the highest areal capacitance of 605.3 mF cm-2 at 2 mA cm-2 , so a symmetrical flexible device is fabricated with LNF-0.1 electrodes. This device has a high energy density (76.7 μW h cm-2 at 2 mW cm-2 ), good cycling stability, and excellent mechanical flexibility. This study thus provides a new research trend for portable and wearable electronics.

Novel and highly efficient catalyst for Li–O2 battery: Porous LaCo0.6Ni0.4O3 nanofibers decorated with ultrafine Co3O4 nanoparticles

It is crucial to design effective cathode catalysts for high performance of Li–O2 batteries (LOBs). Herein, porous LaCo0.6Ni0.4O3 nanofibers decorated with ultrafine Co3O4 nanoparticles (Co3O4@LCN NFs) are designed and employed as cathode catalyst for LOBs. The X-ray photoelectron spectroscopy measurement results suggested that uniform dispreading of Co3O4 nanoparticles on LCN NFs surface could largely increase the surface chemisorbed oxygen, resulting in enhanced catalytic activity. Furthermore, with the assistance of Co3O4 nanoparticles, Co3O4@LCN NFs can significantly facilitate O2 adsorption and diffusion, Li2O2 nucleation/decomposition and the formation of tiny sheet-like Li2O2, thereby achieving a low charge overpotential. A high specific capacity of 11,288 mA h g−1, a low charge voltage plateau of 3.72 V at first cycle and excellent cycle stability of 116 cycles at 1000 mA g−1 are obtained for LOBs with Co3O4@LCN NFs.

An All-Scale Hierarchical Architecture Induces Colossal Room-Temperature Electrocaloric Effect at Ultralow Electric Field in Polymer Nanocomposites.

Composed of electrocaloric (EC) ceramics and polymers, polymer composites with high EC performances are considered as promising candidates for next-generation all-solid-state cooling devices. Their mass application is limited by the low EC strength, which requires very high operational voltage to induce appreciable temperature change. Here, an all-scale hierarchical architecture is proposed and demonstrated to achieve high EC strength in poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene)-based nanocomposites. On the atomic scale, highly polarizable hierarchical interfaces are induced by incorporating BiFeO3 (BFO) nanoparticles in Ba(Zr0.21 Ti0.79 )O3 (BZT) nanofibers (BFO@BZT_nfs); on the microscopic scale, percolation of the interfaces further raises the polarization of the composite nanofibers; on the mesoscopic scale, orthotropic orientation of BFO@BZT_nfs leads to much enhanced breakdown strength of the nanocomposites. As a result, an ultrahigh EC strength of ≈0.22 K m MV-1 is obtained at an ultralow electric field of 75 MV m-1 in nanocomposites filled with the orthotropic composite nanofibers, which is by far the highest value achieved in polymer nanocomposites at a moderate electric field. Results of high-angle annular dark-field scanning transmission electron microscopy, in situ scanning Kelvin probe microscopy characterization, and phase-field simulations all indicate that the much enhanced EC performances can be attributed to the all-scale hierarchical structures of the nanocomposite.

Ultrahigh breakdown strength and energy density of polymer nanocomposite containing surface insulated BCZT@BN nanofibers

Novel surface insulated 0.5(Ba0.7Ca0.3)TiO3-0.5Ba(Zr0.2Ti0.8)O3 (BCZT) nanofibers adhered with boron nitride nanosheets (BNNSs), named as BCZT@BN, is used as fillers in polyvinylidene fluoride (PVDF)-based nanocomposites. Double layered film which comprises high breakdown strength (Eb) layer of PVDF/0.8 wt% BNNSs (PBN0.8) and high dielectric constant (εr) layer of PVDF/0.4 wt% BNNSs/zwt% BCZT@BN (PBN0.4BCZT@BNz) is employed. The Eb is largely increased from 380 MV m−1 of pristine PVDF film to 730 MV m−1 of PVDF nanocomposite fed with 0.8 wt% BNNSs, and a high discharge energy density (Udis) of 17.9 J cm−3 is achieved at the same time. Furthermore, after introducing 1.6 wt% BCZT@BN in PBN0.8-PBN0.4BCZT@BN1.6 nanocomposites, the εr reaches up to 10.7, which is substantially improved by 119% over that of PBN0.8 nanocomposite (9.1). Thus, the incorporation of BCZT@BN NFs endows the PBN0.8-PBN0.4BCZT@BN1.6 nanocomposite with an impressive energy storage density (Ue) of 24.3 J cm−3, which is 3.57 times of pristine PVDF. Finite element simulation analysis reveals that BNNSs adhered on the surface of BCZT NFs exhibit a prominent effect in local electric field elimination and leakage current density dispersion. The strategy provides an innovative approach to enhance the energy storage performance of polymer-based nanocomposites.